--- /dev/null
+/* Pipeline hazard description translator.
+ Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+
+ Written by Vladimir Makarov <vmakarov@redhat.com>
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+GNU CC is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+/* References:
+
+ 1. Detecting pipeline structural hazards quickly. T. Proebsting,
+ C. Fraser. Proceedings of ACM SIGPLAN-SIGACT Symposium on
+ Principles of Programming Languages, pages 280--286, 1994.
+
+ This article is a good start point to understand usage of finite
+ state automata for pipeline hazard recognizers. But I'd
+ recommend the 2nd article for more deep understanding.
+
+ 2. Efficient Instruction Scheduling Using Finite State Automata:
+ V. Bala and N. Rubin, Proceedings of MICRO-28. This is the best
+ article about usage of finite state automata for pipeline hazard
+ recognizers.
+
+ The current implementation is different from the 2nd article in the
+ following:
+
+ 1. New operator `|' (alternative) is permitted in functional unit
+ reservation which can be treated deterministicly and
+ non-deterministicly.
+
+ 2. Possibility of usage of nondeterministic automata too.
+
+ 3. Possibility to query functional unit reservations for given
+ automaton state.
+
+ 4. Several constructions to describe impossible reservations
+ (`exclusion_set', `presence_set', and `absence_set').
+
+ 5. No reverse automata are generated. Trace instruction scheduling
+ requires this. It can be easily added in the future if we
+ really need this.
+
+ 6. Union of automaton states are not generated yet. It is planned
+ to be implemented. Such feature is needed to make more accurate
+ interlock insn scheduling to get state describing functional
+ unit reservation in a joint CFG point.
+*/
+
+/* This file code processes constructions of machine description file
+ which describes automaton used for recognition of processor pipeline
+ hazards by insn scheduler and can be used for other tasks (such as
+ VLIW insn packing.
+
+ The translator functions `gen_cpu_unit', `gen_query_cpu_unit',
+ `gen_bypass', `gen_excl_set', `gen_presence_set',
+ `gen_absence_set', `gen_automaton', `gen_automata_option',
+ `gen_reserv', `gen_insn_reserv' are called from file
+ `genattrtab.c'. They transform RTL constructions describing
+ automata in .md file into internal representation convenient for
+ further processing.
+
+ The translator major function `expand_automata' processes the
+ description internal representation into finite state automaton.
+ It can be divided on:
+
+ o checking correctness of the automaton pipeline description
+ (major function is `check_all_description').
+
+ o generating automaton (automata) from the description (major
+ function is `make_automaton').
+
+ o optional transformation of nondeterministic finite state
+ automata into deterministic ones if the alternative operator
+ `|' is treated nondeterministicly in the description (major
+ function is NDFA_to_DFA).
+
+ o optional minimization of the finite state automata by merging
+ equivalent automaton states (major function is `minimize_DFA').
+
+ o forming tables (some as comb vectors) and attributes
+ representing the automata (functions output_..._table).
+
+ Function `write_automata' outputs the created finite state
+ automaton as different tables and functions which works with the
+ automata to inquire automaton state and to change its state. These
+ function are used by gcc instruction scheduler and may be some
+ other gcc code. */
+
+#include "hconfig.h"
+#include "system.h"
+#include "rtl.h"
+#include "obstack.h"
+#include "errors.h"
+
+#include <ctype.h>
+#include <math.h>
+#include "hashtab.h"
+#include "varray.h"
+
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#else
+#ifndef CHAR_BIT
+#define CHAR_BIT 8
+#endif
+#endif
+
+#include "genattrtab.h"
+
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+
+/* Positions in machine description file. Now they are not used. But
+ they could be used in the future for better diagnostic messages. */
+typedef int pos_t;
+
+/* The following is element of vector of current (and planned in the
+ future) functional unit reservations. */
+typedef unsigned HOST_WIDE_INT set_el_t;
+
+/* Reservations of function units are represented by value of the following
+ type. */
+typedef set_el_t *reserv_sets_t;
+
+/* The following structure represents variable length array (vla) of
+ pointers and HOST WIDE INTs. We could be use only varray. But we
+ add new lay because we add elements very frequently and this could
+ stress OS allocator when varray is used only. */
+typedef struct {
+ size_t length; /* current size of vla. */
+ varray_type varray; /* container for vla. */
+} vla_ptr_t;
+
+typedef vla_ptr_t vla_hwint_t;
+
+/* The following structure describes a ticker. */
+struct ticker
+{
+ /* The following member value is time of the ticker creation with
+ taking into account time when the ticker is off. Active time of
+ the ticker is current time minus the value. */
+ int modified_creation_time;
+ /* The following member value is time (incremented by one) when the
+ ticker was off. Zero value means that now the ticker is on. */
+ int incremented_off_time;
+};
+
+/* The ticker is represented by the following type. */
+typedef struct ticker ticker_t;
+
+/* The following type describes elements of output vectors. */
+typedef HOST_WIDE_INT vect_el_t;
+
+/* Forward declaration of structures of internal representation of
+ pipeline description based on NDFA. */
+
+struct unit_decl;
+struct bypass_decl;
+struct result_decl;
+struct automaton_decl;
+struct unit_rel_decl;
+struct reserv_decl;
+struct insn_reserv_decl;
+struct decl;
+struct unit_regexp;
+struct result_regexp;
+struct reserv_regexp;
+struct nothing_regexp;
+struct sequence_regexp;
+struct repeat_regexp;
+struct allof_regexp;
+struct oneof_regexp;
+struct regexp;
+struct description;
+struct unit_set_el;
+struct state;
+struct alt_state;
+struct arc;
+struct ainsn;
+struct automaton;
+struct state_ainsn_table;
+
+/* The following typedefs are for brevity. */
+typedef struct decl *decl_t;
+typedef struct regexp *regexp_t;
+typedef struct unit_set_el *unit_set_el_t;
+typedef struct alt_state *alt_state_t;
+typedef struct state *state_t;
+typedef struct arc *arc_t;
+typedef struct ainsn *ainsn_t;
+typedef struct automaton *automaton_t;
+typedef struct automata_list_el *automata_list_el_t;
+typedef struct state_ainsn_table *state_ainsn_table_t;
+
+
+/* Prototypes of functions gen_cpu_unit, gen_query_cpu_unit,
+ gen_bypass, gen_excl_set, gen_presence_set, gen_absence_set,
+ gen_automaton, gen_automata_option, gen_reserv, gen_insn_reserv,
+ initiate_automaton_gen, expand_automata, write_automata are
+ described on the file top because the functions are called from
+ function `main'. */
+
+static void *create_node PARAMS ((size_t));
+static void *copy_node PARAMS ((void *, size_t));
+static char *check_name PARAMS ((char *, pos_t));
+static char *next_sep_el PARAMS ((char **, int, int));
+static int n_sep_els PARAMS ((char *, int, int));
+static char **get_str_vect PARAMS ((char *, int *, int, int));
+static regexp_t gen_regexp_el PARAMS ((char *));
+static regexp_t gen_regexp_repeat PARAMS ((char *));
+static regexp_t gen_regexp_allof PARAMS ((char *));
+static regexp_t gen_regexp_oneof PARAMS ((char *));
+static regexp_t gen_regexp_sequence PARAMS ((char *));
+static regexp_t gen_regexp PARAMS ((char *));
+
+static unsigned string_hash PARAMS ((const char *));
+static unsigned automaton_decl_hash PARAMS ((const void *));
+static int automaton_decl_eq_p PARAMS ((const void *,
+ const void *));
+static decl_t insert_automaton_decl PARAMS ((decl_t));
+static decl_t find_automaton_decl PARAMS ((char *));
+static void initiate_automaton_decl_table PARAMS ((void));
+static void finish_automaton_decl_table PARAMS ((void));
+
+static unsigned insn_decl_hash PARAMS ((const void *));
+static int insn_decl_eq_p PARAMS ((const void *,
+ const void *));
+static decl_t insert_insn_decl PARAMS ((decl_t));
+static decl_t find_insn_decl PARAMS ((char *));
+static void initiate_insn_decl_table PARAMS ((void));
+static void finish_insn_decl_table PARAMS ((void));
+
+static unsigned decl_hash PARAMS ((const void *));
+static int decl_eq_p PARAMS ((const void *,
+ const void *));
+static decl_t insert_decl PARAMS ((decl_t));
+static decl_t find_decl PARAMS ((char *));
+static void initiate_decl_table PARAMS ((void));
+static void finish_decl_table PARAMS ((void));
+
+static unit_set_el_t process_excls PARAMS ((char **, int, pos_t));
+static void add_excls PARAMS ((unit_set_el_t, unit_set_el_t,
+ pos_t));
+static unit_set_el_t process_presence_absence
+ PARAMS ((char **, int, pos_t, int));
+static void add_presence_absence PARAMS ((unit_set_el_t, unit_set_el_t,
+ pos_t, int));
+static void process_decls PARAMS ((void));
+static struct bypass_decl *find_bypass PARAMS ((struct bypass_decl *,
+ struct insn_reserv_decl *));
+static void check_automaton_usage PARAMS ((void));
+static regexp_t process_regexp PARAMS ((regexp_t));
+static void process_regexp_decls PARAMS ((void));
+static void check_usage PARAMS ((void));
+static int loop_in_regexp PARAMS ((regexp_t, decl_t));
+static void check_loops_in_regexps PARAMS ((void));
+static int process_regexp_cycles PARAMS ((regexp_t, int));
+static void evaluate_max_reserv_cycles PARAMS ((void));
+static void check_all_description PARAMS ((void));
+
+static ticker_t create_ticker PARAMS ((void));
+static void ticker_off PARAMS ((ticker_t *));
+static void ticker_on PARAMS ((ticker_t *));
+static int active_time PARAMS ((ticker_t));
+static void print_active_time PARAMS ((FILE *, ticker_t));
+
+static void add_advance_cycle_insn_decl PARAMS ((void));
+
+static alt_state_t get_free_alt_state PARAMS ((void));
+static void free_alt_state PARAMS ((alt_state_t));
+static void free_alt_states PARAMS ((alt_state_t));
+static int alt_state_cmp PARAMS ((const void *alt_state_ptr_1,
+ const void *alt_state_ptr_2));
+static alt_state_t uniq_sort_alt_states PARAMS ((alt_state_t));
+static int alt_states_eq PARAMS ((alt_state_t, alt_state_t));
+static void initiate_alt_states PARAMS ((void));
+static void finish_alt_states PARAMS ((void));
+
+static reserv_sets_t alloc_empty_reserv_sets PARAMS ((void));
+static unsigned reserv_sets_hash_value PARAMS ((reserv_sets_t));
+static int reserv_sets_cmp PARAMS ((reserv_sets_t, reserv_sets_t));
+static int reserv_sets_eq PARAMS ((reserv_sets_t, reserv_sets_t));
+static void set_unit_reserv PARAMS ((reserv_sets_t, int, int));
+static int test_unit_reserv PARAMS ((reserv_sets_t, int, int));
+static int it_is_empty_reserv_sets PARAMS ((reserv_sets_t))
+ ATTRIBUTE_UNUSED;
+static int reserv_sets_are_intersected PARAMS ((reserv_sets_t, reserv_sets_t));
+static void reserv_sets_shift PARAMS ((reserv_sets_t, reserv_sets_t));
+static void reserv_sets_or PARAMS ((reserv_sets_t, reserv_sets_t,
+ reserv_sets_t));
+static void reserv_sets_and PARAMS ((reserv_sets_t, reserv_sets_t,
+ reserv_sets_t))
+ ATTRIBUTE_UNUSED;
+static void output_cycle_reservs PARAMS ((FILE *, reserv_sets_t,
+ int, int));
+static void output_reserv_sets PARAMS ((FILE *, reserv_sets_t));
+static state_t get_free_state PARAMS ((int, automaton_t));
+static void free_state PARAMS ((state_t));
+static unsigned state_hash PARAMS ((const void *));
+static int state_eq_p PARAMS ((const void *, const void *));
+static state_t insert_state PARAMS ((state_t));
+static void set_state_reserv PARAMS ((state_t, int, int));
+static int intersected_state_reservs_p PARAMS ((state_t, state_t));
+static state_t states_union PARAMS ((state_t, state_t));
+static state_t state_shift PARAMS ((state_t));
+static void initiate_states PARAMS ((void));
+static void finish_states PARAMS ((void));
+
+static void free_arc PARAMS ((arc_t));
+static void remove_arc PARAMS ((state_t, arc_t));
+static arc_t find_arc PARAMS ((state_t, state_t, ainsn_t));
+static arc_t add_arc PARAMS ((state_t, state_t, ainsn_t, int));
+static arc_t first_out_arc PARAMS ((state_t));
+static arc_t next_out_arc PARAMS ((arc_t));
+static void initiate_arcs PARAMS ((void));
+static void finish_arcs PARAMS ((void));
+
+static automata_list_el_t get_free_automata_list_el PARAMS ((void));
+static void free_automata_list_el PARAMS ((automata_list_el_t));
+static void free_automata_list PARAMS ((automata_list_el_t));
+static unsigned automata_list_hash PARAMS ((const void *));
+static int automata_list_eq_p PARAMS ((const void *, const void *));
+static void initiate_automata_lists PARAMS ((void));
+static void automata_list_start PARAMS ((void));
+static void automata_list_add PARAMS ((automaton_t));
+static automata_list_el_t automata_list_finish PARAMS ((void));
+static void finish_automata_lists PARAMS ((void));
+
+static void initiate_excl_sets PARAMS ((void));
+static reserv_sets_t get_excl_set PARAMS ((reserv_sets_t));
+
+static void initiate_presence_absence_sets PARAMS ((void));
+static reserv_sets_t get_presence_absence_set PARAMS ((reserv_sets_t, int));
+
+static regexp_t copy_insn_regexp PARAMS ((regexp_t));
+static regexp_t transform_1 PARAMS ((regexp_t));
+static regexp_t transform_2 PARAMS ((regexp_t));
+static regexp_t transform_3 PARAMS ((regexp_t));
+static regexp_t regexp_transform_func
+ PARAMS ((regexp_t, regexp_t (*) (regexp_t)));
+static regexp_t transform_regexp PARAMS ((regexp_t));
+static void transform_insn_regexps PARAMS ((void));
+
+static int process_seq_for_forming_states PARAMS ((regexp_t, automaton_t,
+ int));
+static void finish_forming_alt_state PARAMS ((alt_state_t,
+ automaton_t));
+static void process_alts_for_forming_states PARAMS ((regexp_t,
+ automaton_t, int));
+static void create_alt_states PARAMS ((automaton_t));
+
+static void form_ainsn_with_same_reservs PARAMS ((automaton_t));
+
+static void make_automaton PARAMS ((automaton_t));
+static void form_arcs_marked_by_insn PARAMS ((state_t));
+static void create_composed_state PARAMS ((state_t, arc_t, vla_ptr_t *));
+static void NDFA_to_DFA PARAMS ((automaton_t));
+static void pass_state_graph PARAMS ((state_t, void (*) (state_t)));
+static void pass_states PARAMS ((automaton_t,
+ void (*) (state_t)));
+static void initiate_pass_states PARAMS ((void));
+static void add_achieved_state PARAMS ((state_t));
+static int set_out_arc_insns_equiv_num PARAMS ((state_t, int));
+static void clear_arc_insns_equiv_num PARAMS ((state_t));
+static void copy_equiv_class PARAMS ((vla_ptr_t *to,
+ const vla_ptr_t *from));
+static int state_is_differed PARAMS ((state_t, int, int));
+static state_t init_equiv_class PARAMS ((state_t *states, int));
+static int partition_equiv_class PARAMS ((state_t *, int,
+ vla_ptr_t *, int *));
+static void evaluate_equiv_classes PARAMS ((automaton_t, vla_ptr_t *));
+static void merge_states PARAMS ((automaton_t, vla_ptr_t *));
+static void set_new_cycle_flags PARAMS ((state_t));
+static void minimize_DFA PARAMS ((automaton_t));
+static void incr_states_and_arcs_nums PARAMS ((state_t));
+static void count_states_and_arcs PARAMS ((automaton_t, int *, int *));
+static void build_automaton PARAMS ((automaton_t));
+
+static void set_order_state_num PARAMS ((state_t));
+static void enumerate_states PARAMS ((automaton_t));
+
+static ainsn_t insert_ainsn_into_equiv_class PARAMS ((ainsn_t, ainsn_t));
+static void delete_ainsn_from_equiv_class PARAMS ((ainsn_t));
+static void process_insn_equiv_class PARAMS ((ainsn_t, arc_t *));
+static void process_state_for_insn_equiv_partition PARAMS ((state_t));
+static void set_insn_equiv_classes PARAMS ((automaton_t));
+
+static double estimate_one_automaton_bound PARAMS ((void));
+static int compare_max_occ_cycle_nums PARAMS ((const void *,
+ const void *));
+static void units_to_automata_heuristic_distr PARAMS ((void));
+static ainsn_t create_ainsns PARAMS ((void));
+static void units_to_automata_distr PARAMS ((void));
+static void create_automata PARAMS ((void));
+
+static void form_regexp PARAMS ((regexp_t));
+static const char *regexp_representation PARAMS ((regexp_t));
+static void finish_regexp_representation PARAMS ((void));
+
+static void output_range_type PARAMS ((FILE *, long int, long int));
+static int longest_path_length PARAMS ((state_t));
+static void process_state_longest_path_length PARAMS ((state_t));
+static void output_dfa_max_issue_rate PARAMS ((void));
+static void output_vect PARAMS ((vect_el_t *, int));
+static void output_chip_member_name PARAMS ((FILE *, automaton_t));
+static void output_temp_chip_member_name PARAMS ((FILE *, automaton_t));
+static void output_translate_vect_name PARAMS ((FILE *, automaton_t));
+static void output_trans_full_vect_name PARAMS ((FILE *, automaton_t));
+static void output_trans_comb_vect_name PARAMS ((FILE *, automaton_t));
+static void output_trans_check_vect_name PARAMS ((FILE *, automaton_t));
+static void output_trans_base_vect_name PARAMS ((FILE *, automaton_t));
+static void output_state_alts_full_vect_name PARAMS ((FILE *, automaton_t));
+static void output_state_alts_comb_vect_name PARAMS ((FILE *, automaton_t));
+static void output_state_alts_check_vect_name PARAMS ((FILE *, automaton_t));
+static void output_state_alts_base_vect_name PARAMS ((FILE *, automaton_t));
+static void output_min_issue_delay_vect_name PARAMS ((FILE *, automaton_t));
+static void output_dead_lock_vect_name PARAMS ((FILE *, automaton_t));
+static void output_reserved_units_table_name PARAMS ((FILE *, automaton_t));
+static void output_state_member_type PARAMS ((FILE *, automaton_t));
+static void output_chip_definitions PARAMS ((void));
+static void output_translate_vect PARAMS ((automaton_t));
+static int comb_vect_p PARAMS ((state_ainsn_table_t));
+static state_ainsn_table_t create_state_ainsn_table PARAMS ((automaton_t));
+static void output_state_ainsn_table
+ PARAMS ((state_ainsn_table_t, char *, void (*) (FILE *, automaton_t),
+ void (*) (FILE *, automaton_t), void (*) (FILE *, automaton_t),
+ void (*) (FILE *, automaton_t)));
+static void add_vect PARAMS ((state_ainsn_table_t,
+ int, vect_el_t *, int));
+static int out_state_arcs_num PARAMS ((state_t));
+static int compare_transition_els_num PARAMS ((const void *, const void *));
+static void add_vect_el PARAMS ((vla_hwint_t *,
+ ainsn_t, int));
+static void add_states_vect_el PARAMS ((state_t));
+static void output_trans_table PARAMS ((automaton_t));
+static void output_state_alts_table PARAMS ((automaton_t));
+static void min_issue_delay_pass_states PARAMS ((state_t, ainsn_t));
+static int min_issue_delay PARAMS ((state_t, ainsn_t));
+static void initiate_min_issue_delay_pass_states PARAMS ((void));
+static void output_min_issue_delay_table PARAMS ((automaton_t));
+static void output_dead_lock_vect PARAMS ((automaton_t));
+static void output_reserved_units_table PARAMS ((automaton_t));
+static void output_tables PARAMS ((void));
+static void output_max_insn_queue_index_def PARAMS ((void));
+static void output_insn_code_cases PARAMS ((void (*) (automata_list_el_t)));
+static void output_automata_list_min_issue_delay_code PARAMS ((automata_list_el_t));
+static void output_internal_min_issue_delay_func PARAMS ((void));
+static void output_automata_list_transition_code PARAMS ((automata_list_el_t));
+static void output_internal_trans_func PARAMS ((void));
+static void output_internal_insn_code_evaluation PARAMS ((const char *,
+ const char *, int));
+static void output_dfa_insn_code_func PARAMS ((void));
+static void output_trans_func PARAMS ((void));
+static void output_automata_list_state_alts_code PARAMS ((automata_list_el_t));
+static void output_internal_state_alts_func PARAMS ((void));
+static void output_state_alts_func PARAMS ((void));
+static void output_min_issue_delay_func PARAMS ((void));
+static void output_internal_dead_lock_func PARAMS ((void));
+static void output_dead_lock_func PARAMS ((void));
+static void output_internal_reset_func PARAMS ((void));
+static void output_size_func PARAMS ((void));
+static void output_reset_func PARAMS ((void));
+static void output_min_insn_conflict_delay_func PARAMS ((void));
+static void output_internal_insn_latency_func PARAMS ((void));
+static void output_insn_latency_func PARAMS ((void));
+static void output_print_reservation_func PARAMS ((void));
+static int units_cmp PARAMS ((const void *,
+ const void *));
+static void output_get_cpu_unit_code_func PARAMS ((void));
+static void output_cpu_unit_reservation_p PARAMS ((void));
+static void output_dfa_start_func PARAMS ((void));
+static void output_dfa_finish_func PARAMS ((void));
+
+static void output_regexp PARAMS ((regexp_t ));
+static void output_unit_set_el_list PARAMS ((unit_set_el_t));
+static void output_description PARAMS ((void));
+static void output_automaton_name PARAMS ((FILE *, automaton_t));
+static void output_automaton_units PARAMS ((automaton_t));
+static void add_state_reservs PARAMS ((state_t));
+static void output_state_arcs PARAMS ((state_t));
+static int state_reservs_cmp PARAMS ((const void *,
+ const void *));
+static void remove_state_duplicate_reservs PARAMS ((void));
+static void output_state PARAMS ((state_t));
+static void output_automaton_descriptions PARAMS ((void));
+static void output_statistics PARAMS ((FILE *));
+static void output_time_statistics PARAMS ((FILE *));
+static void generate PARAMS ((void));
+
+static void make_insn_alts_attr PARAMS ((void));
+static void make_internal_dfa_insn_code_attr PARAMS ((void));
+static void make_default_insn_latency_attr PARAMS ((void));
+static void make_bypass_attr PARAMS ((void));
+static const char *file_name_suffix PARAMS ((const char *));
+static const char *base_file_name PARAMS ((const char *));
+static void check_automata PARAMS ((void));
+static void add_automaton_state PARAMS ((state_t));
+static void form_important_insn_automata_lists PARAMS ((void));
+
+/* Undefined position. */
+static pos_t no_pos = 0;
+
+/* All IR is stored in the following obstack. */
+static struct obstack irp;
+
+\f
+
+/* This page contains code for work with variable length array (vla)
+ of pointers. We could be use only varray. But we add new lay
+ because we add elements very frequently and this could stress OS
+ allocator when varray is used only. */
+
+/* Start work with vla. */
+#define VLA_PTR_CREATE(vla, allocated_length, name) \
+ do \
+ { \
+ vla_ptr_t *vla_ptr = &(vla); \
+ \
+ VARRAY_GENERIC_PTR_INIT (vla_ptr->varray, allocated_length, name);\
+ vla_ptr->length = 0; \
+ } \
+ while (0)
+
+/* Finish work with the vla. */
+#define VLA_PTR_DELETE(vla) VARRAY_FREE ((vla).varray)
+
+/* Return start address of the vla. */
+#define VLA_PTR_BEGIN(vla) ((void *) &VARRAY_GENERIC_PTR ((vla).varray, 0))
+
+/* Address of the last element of the vla. Do not use side effects in
+ the macro argument. */
+#define VLA_PTR_LAST(vla) (&VARRAY_GENERIC_PTR ((vla).varray, \
+ (vla).length - 1))
+/* Nullify the vla. */
+#define VLA_PTR_NULLIFY(vla) ((vla).length = 0)
+
+/* Shorten the vla on given number bytes. */
+#define VLA_PTR_SHORTEN(vla, n) ((vla).length -= (n))
+
+/* Expand the vla on N elements. The values of new elements are
+ undefined. */
+#define VLA_PTR_EXPAND(vla, n) \
+ do { \
+ vla_ptr_t *expand_vla_ptr = &(vla); \
+ size_t new_length = (n) + expand_vla_ptr->length; \
+ \
+ if (VARRAY_SIZE (expand_vla_ptr->varray) < new_length) \
+ VARRAY_GROW (expand_vla_ptr->varray, \
+ (new_length - expand_vla_ptr->length < 128 \
+ ? expand_vla_ptr->length + 128 : new_length)); \
+ expand_vla_ptr->length = new_length; \
+ } while (0)
+
+/* Add element to the end of the vla. */
+#define VLA_PTR_ADD(vla, ptr) \
+ do { \
+ vla_ptr_t *vla_ptr = &(vla); \
+ \
+ VLA_PTR_EXPAND (*vla_ptr, 1); \
+ VARRAY_GENERIC_PTR (vla_ptr->varray, vla_ptr->length - 1) = (ptr);\
+ } while (0)
+
+/* Length of the vla in elements. */
+#define VLA_PTR_LENGTH(vla) ((vla).length)
+
+/* N-th element of the vla. */
+#define VLA_PTR(vla, n) VARRAY_GENERIC_PTR ((vla).varray, n)
+
+
+/* The following macros are analogous to the previous ones but for
+ VLAs of HOST WIDE INTs. */
+
+#define VLA_HWINT_CREATE(vla, allocated_length, name) \
+ do { \
+ vla_hwint_t *vla_ptr = &(vla); \
+ \
+ VARRAY_WIDE_INT_INIT (vla_ptr->varray, allocated_length, name); \
+ vla_ptr->length = 0; \
+ } while (0)
+
+#define VLA_HWINT_DELETE(vla) VARRAY_FREE ((vla).varray)
+
+#define VLA_HWINT_BEGIN(vla) (&VARRAY_WIDE_INT ((vla).varray, 0))
+
+/* Do not use side effects in the macro argument. */
+#define VLA_HWINT_LAST(vla) (&VARRAY_WIDE_INT ((vla).varray, \
+ (vla).length - 1))
+
+#define VLA_HWINT_NULLIFY(vla) ((vla).length = 0)
+
+#define VLA_HWINT_SHORTEN(vla, n) ((vla).length -= (n))
+
+#define VLA_HWINT_EXPAND(vla, n) \
+ do { \
+ vla_hwint_t *expand_vla_ptr = &(vla); \
+ size_t new_length = (n) + expand_vla_ptr->length; \
+ \
+ if (VARRAY_SIZE (expand_vla_ptr->varray) < new_length) \
+ VARRAY_GROW (expand_vla_ptr->varray, \
+ (new_length - expand_vla_ptr->length < 128 \
+ ? expand_vla_ptr->length + 128 : new_length)); \
+ expand_vla_ptr->length = new_length; \
+ } while (0)
+
+#define VLA_HWINT_ADD(vla, ptr) \
+ do { \
+ vla_hwint_t *vla_ptr = &(vla); \
+ \
+ VLA_HWINT_EXPAND (*vla_ptr, 1); \
+ VARRAY_WIDE_INT (vla_ptr->varray, vla_ptr->length - 1) = (ptr); \
+ } while (0)
+
+#define VLA_HWINT_LENGTH(vla) ((vla).length)
+
+#define VLA_HWINT(vla, n) VARRAY_WIDE_INT ((vla).varray, n)
+
+\f
+
+/* Options with the following names can be set up in automata_option
+ construction. Because the strings occur more one time we use the
+ macros. */
+
+#define NO_MINIMIZATION_OPTION "-no-minimization"
+
+#define W_OPTION "-w"
+
+#define NDFA_OPTION "-ndfa"
+
+/* The following flags are set up by function `initiate_automaton_gen'. */
+
+/* Make automata with nondeterministic reservation by insns (`-ndfa'). */
+static int ndfa_flag;
+
+/* Do not make minimization of DFA (`-no-minimization'). */
+static int no_minimization_flag;
+
+/* Value of this variable is number of automata being generated. The
+ actual number of automata may be less this value if there is not
+ sufficient number of units. This value is defined by argument of
+ option `-split' or by constructions automaton if the value is zero
+ (it is default value of the argument). */
+static int split_argument;
+
+/* Flag of output time statistics (`-time'). */
+static int time_flag;
+
+/* Flag of creation of description file which contains description of
+ result automaton and statistics information (`-v'). */
+static int v_flag;
+
+/* Flag of generating warning instead of error for non-critical errors
+ (`-w'). */
+static int w_flag;
+
+
+/* Output file for pipeline hazard recognizer (PHR) being generated.
+ The value is NULL if the file is not defined. */
+static FILE *output_file;
+
+/* Description file of PHR. The value is NULL if the file is not
+ created. */
+static FILE *output_description_file;
+
+/* PHR description file name. */
+static char *output_description_file_name;
+
+/* Value of the following variable is node representing description
+ being processed. This is start point of IR. */
+static struct description *description;
+
+\f
+
+/* This page contains description of IR structure (nodes). */
+
+enum decl_mode
+{
+ dm_unit,
+ dm_bypass,
+ dm_automaton,
+ dm_excl,
+ dm_presence,
+ dm_absence,
+ dm_reserv,
+ dm_insn_reserv
+};
+
+/* This describes define_cpu_unit and define_query_cpu_unit (see file
+ rtl.def). */
+struct unit_decl
+{
+ char *name;
+ /* NULL if the automaton name is absent. */
+ char *automaton_name;
+ /* If the following value is not zero, the cpu unit reservation is
+ described in define_query_cpu_unit. */
+ char query_p;
+
+ /* The following fields are defined by checker. */
+
+ /* The following field value is nonzero if the unit is used in an
+ regexp. */
+ char unit_is_used;
+ /* The following field value is order number (0, 1, ...) of given
+ unit. */
+ int unit_num;
+ /* The following field value is corresponding declaration of
+ automaton which was given in description. If the field value is
+ NULL then automaton in the unit declaration was absent. */
+ struct automaton_decl *automaton_decl;
+ /* The following field value is maximal cycle number (1, ...) on
+ which given unit occurs in insns. Zero value means that given
+ unit is not used in insns. */
+ int max_occ_cycle_num;
+ /* The following list contains units which conflict with given
+ unit. */
+ unit_set_el_t excl_list;
+ /* The following list contains units which are required to
+ reservation of given unit. */
+ unit_set_el_t presence_list;
+ /* The following list contains units which should be not present in
+ reservation for given unit. */
+ unit_set_el_t absence_list;
+ /* The following is used only when `query_p' has nonzero value.
+ This is query number for the unit. */
+ int query_num;
+
+ /* The following fields are defined by automaton generator. */
+
+ /* The following field value is number of the automaton to which
+ given unit belongs. */
+ int corresponding_automaton_num;
+};
+
+/* This describes define_bypass (see file rtl.def). */
+struct bypass_decl
+{
+ int latency;
+ char *out_insn_name;
+ char *in_insn_name;
+ char *bypass_guard_name;
+
+ /* The following fields are defined by checker. */
+
+ /* output and input insns of given bypass. */
+ struct insn_reserv_decl *out_insn_reserv;
+ struct insn_reserv_decl *in_insn_reserv;
+ /* The next bypass for given output insn. */
+ struct bypass_decl *next;
+};
+
+/* This describes define_automaton (see file rtl.def). */
+struct automaton_decl
+{
+ char *name;
+
+ /* The following fields are defined by automaton generator. */
+
+ /* The following field value is nonzero if the automaton is used in
+ an regexp definition. */
+ char automaton_is_used;
+
+ /* The following fields are defined by checker. */
+
+ /* The following field value is the corresponding automaton. This
+ field is not NULL only if the automaton is present in unit
+ declarations and the automatic partition on automata is not
+ used. */
+ automaton_t corresponding_automaton;
+};
+
+/* This describes unit relations: exclusion_set, presence_set, or
+ absence_set (see file rtl.def). */
+struct unit_rel_decl
+{
+ int names_num;
+ int first_list_length;
+ char *names [1];
+};
+
+/* This describes define_reservation (see file rtl.def). */
+struct reserv_decl
+{
+ char *name;
+ regexp_t regexp;
+
+ /* The following fields are defined by checker. */
+
+ /* The following field value is nonzero if the unit is used in an
+ regexp. */
+ char reserv_is_used;
+ /* The following field is used to check up cycle in expression
+ definition. */
+ int loop_pass_num;
+};
+
+/* This describes define_insn_reservartion (see file rtl.def). */
+struct insn_reserv_decl
+{
+ rtx condexp;
+ int default_latency;
+ regexp_t regexp;
+ char *name;
+
+ /* The following fields are defined by checker. */
+
+ /* The following field value is order number (0, 1, ...) of given
+ insn. */
+ int insn_num;
+ /* The following field value is list of bypasses in which given insn
+ is output insn. */
+ struct bypass_decl *bypass_list;
+
+ /* The following fields are defined by automaton generator. */
+
+ /* The following field is the insn regexp transformed that
+ the regexp has not optional regexp, repetition regexp, and an
+ reservation name (i.e. reservation identifiers are changed by the
+ corresponding regexp) and all alternations are the topest level
+ of the regexp. The value can be NULL only if it is special
+ insn `cycle advancing'. */
+ regexp_t transformed_regexp;
+ /* The following field value is list of arcs marked given
+ insn. The field is used in transfromation NDFA -> DFA. */
+ arc_t arcs_marked_by_insn;
+ /* The two following fields are used during minimization of a finite state
+ automaton. */
+ /* The field value is number of equivalence class of state into
+ which arc marked by given insn enters from a state (fixed during
+ an automaton minimization). */
+ int equiv_class_num;
+ /* The field value is state_alts of arc leaving a state (fixed
+ during an automaton minimization) and marked by given insn
+ enters. */
+ int state_alts;
+ /* The following member value is the list to automata which can be
+ changed by the insn issue. */
+ automata_list_el_t important_automata_list;
+ /* The following member is used to process insn once for output. */
+ int processed_p;
+};
+
+/* This contains a declaration mentioned above. */
+struct decl
+{
+ /* What node in the union? */
+ enum decl_mode mode;
+ pos_t pos;
+ union
+ {
+ struct unit_decl unit;
+ struct bypass_decl bypass;
+ struct automaton_decl automaton;
+ struct unit_rel_decl excl;
+ struct unit_rel_decl presence;
+ struct unit_rel_decl absence;
+ struct reserv_decl reserv;
+ struct insn_reserv_decl insn_reserv;
+ } decl;
+};
+
+/* The following structures represent parsed reservation strings. */
+enum regexp_mode
+{
+ rm_unit,
+ rm_reserv,
+ rm_nothing,
+ rm_sequence,
+ rm_repeat,
+ rm_allof,
+ rm_oneof
+};
+
+/* Cpu unit in reservation. */
+struct unit_regexp
+{
+ char *name;
+ struct unit_decl *unit_decl;
+};
+
+/* Define_reservation in a reservation. */
+struct reserv_regexp
+{
+ char *name;
+ struct reserv_decl *reserv_decl;
+};
+
+/* Absence of reservation (represented by string `nothing'). */
+struct nothing_regexp
+{
+ /* This used to be empty but ISO C doesn't allow that. */
+ char unused;
+};
+
+/* Representation of reservations separated by ',' (see file
+ rtl.def). */
+struct sequence_regexp
+{
+ int regexps_num;
+ regexp_t regexps [1];
+};
+
+/* Representation of construction `repeat' (see file rtl.def). */
+struct repeat_regexp
+{
+ int repeat_num;
+ regexp_t regexp;
+};
+
+/* Representation of reservations separated by '+' (see file
+ rtl.def). */
+struct allof_regexp
+{
+ int regexps_num;
+ regexp_t regexps [1];
+};
+
+/* Representation of reservations separated by '|' (see file
+ rtl.def). */
+struct oneof_regexp
+{
+ int regexps_num;
+ regexp_t regexps [1];
+};
+
+/* Representation of a reservation string. */
+struct regexp
+{
+ /* What node in the union? */
+ enum regexp_mode mode;
+ pos_t pos;
+ union
+ {
+ struct unit_regexp unit;
+ struct reserv_regexp reserv;
+ struct nothing_regexp nothing;
+ struct sequence_regexp sequence;
+ struct repeat_regexp repeat;
+ struct allof_regexp allof;
+ struct oneof_regexp oneof;
+ } regexp;
+};
+
+/* Reperesents description of pipeline hazard description based on
+ NDFA. */
+struct description
+{
+ int decls_num;
+
+ /* The following fields are defined by checker. */
+
+ /* The following fields values are correspondingly number of all
+ units, query units, and insns in the description. */
+ int units_num;
+ int query_units_num;
+ int insns_num;
+ /* The following field value is max length (in cycles) of
+ reservations of insns. The field value is defined only for
+ correct programs. */
+ int max_insn_reserv_cycles;
+
+ /* The following fields are defined by automaton generator. */
+
+ /* The following field value is the first automaton. */
+ automaton_t first_automaton;
+
+ /* The following field is created by pipeline hazard parser and
+ contains all declarations. We allocate additional entry for
+ special insn "cycle advancing" which is added by the automaton
+ generator. */
+ decl_t decls [1];
+};
+
+
+
+/* The following nodes are created in automaton checker. */
+
+/* The following nodes represent exclusion, presence, absence set for
+ cpu units. Each element are accessed through only one excl_list,
+ presence_list, absence_list. */
+struct unit_set_el
+{
+ struct unit_decl *unit_decl;
+ unit_set_el_t next_unit_set_el;
+};
+
+
+
+/* The following nodes are created in automaton generator. */
+
+/* The following node type describes state automaton. The state may
+ be deterministic or non-deterministic. Non-deterministic state has
+ several component states which represent alternative cpu units
+ reservations. The state also is used for describing a
+ deterministic reservation of automaton insn. */
+struct state
+{
+ /* The following member value is nonzero if there is a transition by
+ cycle advancing. */
+ int new_cycle_p;
+ /* The following field is list of processor unit reservations on
+ each cycle. */
+ reserv_sets_t reservs;
+ /* The following field is unique number of given state between other
+ states. */
+ int unique_num;
+ /* The following field value is automaton to which given state
+ belongs. */
+ automaton_t automaton;
+ /* The following field value is the first arc output from given
+ state. */
+ arc_t first_out_arc;
+ /* The following field is used to form NDFA. */
+ char it_was_placed_in_stack_for_NDFA_forming;
+ /* The following field is used to form DFA. */
+ char it_was_placed_in_stack_for_DFA_forming;
+ /* The following field is used to transform NDFA to DFA. The field
+ value is not NULL if the state is a compound state. In this case
+ the value of field `unit_sets_list' is NULL. All states in the
+ list are in the hash table. The list is formed through field
+ `next_sorted_alt_state'. */
+ alt_state_t component_states;
+ /* The following field is used for passing graph of states. */
+ int pass_num;
+ /* The list of states belonging to one equivalence class is formed
+ with the aid of the following field. */
+ state_t next_equiv_class_state;
+ /* The two following fields are used during minimization of a finite
+ state automaton. */
+ int equiv_class_num_1, equiv_class_num_2;
+ /* The following field is used during minimization of a finite state
+ automaton. The field value is state corresponding to equivalence
+ class to which given state belongs. */
+ state_t equiv_class_state;
+ /* The following field value is the order number of given state.
+ The states in final DFA is enumerated with the aid of the
+ following field. */
+ int order_state_num;
+ /* This member is used for passing states for searching minimal
+ delay time. */
+ int state_pass_num;
+ /* The following member is used to evaluate min issue delay of insn
+ for a state. */
+ int min_insn_issue_delay;
+ /* The following member is used to evaluate max issue rate of the
+ processor. The value of the member is maximal length of the path
+ from given state no containing arcs marked by special insn `cycle
+ advancing'. */
+ int longest_path_length;
+};
+
+/* The following macro is an initial value of member
+ `longest_path_length' of a state. */
+#define UNDEFINED_LONGEST_PATH_LENGTH -1
+
+/* Automaton arc. */
+struct arc
+{
+ /* The following field refers for the state into which given arc
+ enters. */
+ state_t to_state;
+ /* The following field describes that the insn issue (with cycle
+ advancing for special insn `cycle advancing' and without cycle
+ advancing for others) makes transition from given state to
+ another given state. */
+ ainsn_t insn;
+ /* The following field value is the next arc output from the same
+ state. */
+ arc_t next_out_arc;
+ /* List of arcs marked given insn is formed with the following
+ field. The field is used in transfromation NDFA -> DFA. */
+ arc_t next_arc_marked_by_insn;
+ /* The following field is defined if NDFA_FLAG is zero. The member
+ value is number of alternative reservations which can be used for
+ transition for given state by given insn. */
+ int state_alts;
+};
+
+/* The following node type describes a deterministic alternative in
+ non-deterministic state which characterizes cpu unit reservations
+ of automaton insn or which is part of NDFA. */
+struct alt_state
+{
+ /* The following field is a determinist state which characterizes
+ unit reservations of the instruction. */
+ state_t state;
+ /* The following field refers to the next state which characterizes
+ unit reservations of the instruction. */
+ alt_state_t next_alt_state;
+ /* The following field refers to the next state in sorted list. */
+ alt_state_t next_sorted_alt_state;
+};
+
+/* The following node type describes insn of automaton. They are
+ labels of FA arcs. */
+struct ainsn
+{
+ /* The following field value is the corresponding insn declaration
+ of description. */
+ struct insn_reserv_decl *insn_reserv_decl;
+ /* The following field value is the next insn declaration for an
+ automaton. */
+ ainsn_t next_ainsn;
+ /* The following field is states which characterize automaton unit
+ reservations of the instruction. The value can be NULL only if it
+ is special insn `cycle advancing'. */
+ alt_state_t alt_states;
+ /* The following field is sorted list of states which characterize
+ automaton unit reservations of the instruction. The value can be
+ NULL only if it is special insn `cycle advancing'. */
+ alt_state_t sorted_alt_states;
+ /* The following field refers the next automaton insn with
+ the same reservations. */
+ ainsn_t next_same_reservs_insn;
+ /* The following field is flag of the first automaton insn with the
+ same reservations in the declaration list. Only arcs marked such
+ insn is present in the automaton. This significantly decreases
+ memory requirements especially when several automata are
+ formed. */
+ char first_insn_with_same_reservs;
+ /* The following member has nonzero value if there is arc from state of
+ the automaton marked by the ainsn. */
+ char arc_exists_p;
+ /* Cyclic list of insns of a equivalence class is formed with the
+ aid of the following field. */
+ ainsn_t next_equiv_class_insn;
+ /* The following field value is nonzero if the insn declaration is
+ the first insn declaration with given equivalence number. */
+ char first_ainsn_with_given_equialence_num;
+ /* The following field is number of class of equivalence of insns.
+ It is necessary because many insns may be equivalent with the
+ point of view of pipeline hazards. */
+ int insn_equiv_class_num;
+ /* The following member value is TRUE if there is an arc in the
+ automaton marked by the insn into another state. In other
+ words, the insn can change the state of the automaton. */
+ int important_p;
+};
+
+/* The folowing describes an automaton for PHR. */
+struct automaton
+{
+ /* The following field value is the list of insn declarations for
+ given automaton. */
+ ainsn_t ainsn_list;
+ /* The following field value is the corresponding automaton
+ declaration. This field is not NULL only if the automatic
+ partition on automata is not used. */
+ struct automaton_decl *corresponding_automaton_decl;
+ /* The following field value is the next automaton. */
+ automaton_t next_automaton;
+ /* The following field is start state of FA. There are not unit
+ reservations in the state. */
+ state_t start_state;
+ /* The following field value is number of equivalence classes of
+ insns (see field `insn_equiv_class_num' in
+ `insn_reserv_decl'). */
+ int insn_equiv_classes_num;
+ /* The following field value is number of states of final DFA. */
+ int achieved_states_num;
+ /* The following field value is the order number (0, 1, ...) of
+ given automaton. */
+ int automaton_order_num;
+ /* The following fields contain statistics information about
+ building automaton. */
+ int NDFA_states_num, DFA_states_num;
+ /* The following field value is defined only if minimization of DFA
+ is used. */
+ int minimal_DFA_states_num;
+ int NDFA_arcs_num, DFA_arcs_num;
+ /* The following field value is defined only if minimization of DFA
+ is used. */
+ int minimal_DFA_arcs_num;
+ /* The following two members refer for two table state x ainsn ->
+ int. */
+ state_ainsn_table_t trans_table;
+ state_ainsn_table_t state_alts_table;
+ /* The following member value is maximal value of min issue delay
+ for insns of the automaton. */
+ int max_min_delay;
+ /* Usually min issue delay is small and we can place several (2, 4,
+ 8) elements in one vector element. So the compression factor can
+ be 1 (no compression), 2, 4, 8. */
+ int min_issue_delay_table_compression_factor;
+};
+
+/* The following is the element of the list of automata. */
+struct automata_list_el
+{
+ /* The automaton itself. */
+ automaton_t automaton;
+ /* The next automata set element. */
+ automata_list_el_t next_automata_list_el;
+};
+
+/* The following structure describes a table state X ainsn -> int(>= 0). */
+struct state_ainsn_table
+{
+ /* Automaton to which given table belongs. */
+ automaton_t automaton;
+ /* The following tree vectors for comb vector implementation of the
+ table. */
+ vla_hwint_t comb_vect;
+ vla_hwint_t check_vect;
+ vla_hwint_t base_vect;
+ /* This is simple implementation of the table. */
+ vla_hwint_t full_vect;
+ /* Minimal and maximal values of the previous vectors. */
+ int min_comb_vect_el_value, max_comb_vect_el_value;
+ int min_base_vect_el_value, max_base_vect_el_value;
+};
+
+/* Create IR structure (node). */
+static void *
+create_node (size)
+ size_t size;
+{
+ void *result;
+
+ obstack_blank (&irp, size);
+ result = obstack_base (&irp);
+ obstack_finish (&irp);
+ /* Default values of members are NULL and zero. */
+ memset (result, 0, size);
+ return result;
+}
+
+/* Copy IR structure (node). */
+static void *
+copy_node (from, size)
+ void *from;
+ size_t size;
+{
+ void *result;
+ result = create_node (size);
+ memcpy (result, from, size);
+ return result;
+}
+
+/* The function checks that NAME does not contain quotes (`"'). */
+static char *
+check_name (name, pos)
+ char * name;
+ pos_t pos ATTRIBUTE_UNUSED;
+{
+ char *str;
+
+ for (str = name; *str != '\0'; str++)
+ if (*str == '\"')
+ error ("Name `%s' contains quotes", name);
+ return name;
+}
+
+/* Pointers top all declartions during IR generation are stored in the
+ following. */
+static vla_ptr_t decls;
+
+/* Given a pointer to a (char *) and a separator, return a alloc'ed
+ string containing the next separated element, taking parentheses
+ into account if PAR_FLAG has nonzero value. Advance the pointer to
+ after the string scanned, or the end-of-string. Return NULL if at
+ end of string. */
+static char *
+next_sep_el (pstr, sep, par_flag)
+ char **pstr;
+ int sep;
+ int par_flag;
+{
+ char *out_str;
+ char *p;
+ int pars_num;
+ int n_spaces;
+
+ /* Remove leading whitespaces. */
+ while (isspace ((int) **pstr))
+ (*pstr)++;
+
+ if (**pstr == '\0')
+ return NULL;
+
+ n_spaces = 0;
+ for (pars_num = 0, p = *pstr; *p != '\0'; p++)
+ {
+ if (par_flag && *p == '(')
+ pars_num++;
+ else if (par_flag && *p == ')')
+ pars_num--;
+ else if (pars_num == 0 && *p == sep)
+ break;
+ if (pars_num == 0 && isspace ((int) *p))
+ n_spaces++;
+ else
+ {
+ for (; n_spaces != 0; n_spaces--)
+ obstack_1grow (&irp, p [-n_spaces]);
+ obstack_1grow (&irp, *p);
+ }
+ }
+ obstack_1grow (&irp, '\0');
+ out_str = obstack_base (&irp);
+ obstack_finish (&irp);
+
+ *pstr = p;
+ if (**pstr == sep)
+ (*pstr)++;
+
+ return out_str;
+}
+
+/* Given a string and a separator, return the number of separated
+ elements in it, taking parentheses into account if PAR_FLAG has
+ nonzero value. Return 0 for the null string, -1 if parantheses is
+ not balanced. */
+static int
+n_sep_els (s, sep, par_flag)
+ char *s;
+ int sep;
+ int par_flag;
+{
+ int n;
+ int pars_num;
+
+ if (*s == '\0')
+ return 0;
+
+ for (pars_num = 0, n = 1; *s; s++)
+ if (par_flag && *s == '(')
+ pars_num++;
+ else if (par_flag && *s == ')')
+ pars_num--;
+ else if (pars_num == 0 && *s == sep)
+ n++;
+
+ return (pars_num != 0 ? -1 : n);
+}
+
+/* Given a string and a separator, return vector of strings which are
+ elements in the string and number of elements through els_num.
+ Take parentheses into account if PAR_FLAG has nonzero value.
+ Return 0 for the null string, -1 if parantheses are not balanced. */
+static char **
+get_str_vect (str, els_num, sep, par_flag)
+ char *str;
+ int *els_num;
+ int sep;
+ int par_flag;
+{
+ int i;
+ char **vect;
+ char **pstr;
+
+ *els_num = n_sep_els (str, sep, par_flag);
+ if (*els_num <= 0)
+ return NULL;
+ obstack_blank (&irp, sizeof (char *) * (*els_num));
+ vect = (char **) obstack_base (&irp);
+ obstack_finish (&irp);
+ pstr = &str;
+ for (i = 0; i < *els_num; i++)
+ vect [i] = next_sep_el (pstr, sep, par_flag);
+ if (next_sep_el (pstr, sep, par_flag) != NULL)
+ abort ();
+ return vect;
+}
+
+/* Process a DEFINE_CPU_UNIT.
+
+ This gives information about a unit contained in CPU. We fill a
+ struct unit_decl with information used later by `expand_automata'. */
+void
+gen_cpu_unit (def)
+ rtx def;
+{
+ decl_t decl;
+ char **str_cpu_units;
+ int vect_length;
+ int i;
+
+ str_cpu_units = get_str_vect ((char *) XSTR (def, 0), &vect_length, ',', 0);
+ if (str_cpu_units == NULL)
+ fatal ("invalid string `%s' in define_cpu_unit", XSTR (def, 0));
+ for (i = 0; i < vect_length; i++)
+ {
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_unit;
+ decl->pos = 0;
+ decl->decl.unit.name = check_name (str_cpu_units [i], decl->pos);
+ decl->decl.unit.automaton_name = (char *) XSTR (def, 1);
+ decl->decl.unit.query_p = 0;
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+ }
+}
+
+/* Process a DEFINE_QUERY_CPU_UNIT.
+
+ This gives information about a unit contained in CPU. We fill a
+ struct unit_decl with information used later by `expand_automata'. */
+void
+gen_query_cpu_unit (def)
+ rtx def;
+{
+ decl_t decl;
+ char **str_cpu_units;
+ int vect_length;
+ int i;
+
+ str_cpu_units = get_str_vect ((char *) XSTR (def, 0), &vect_length, ',', 0);
+ if (str_cpu_units == NULL)
+ fatal ("invalid string `%s' in define_query_cpu_unit", XSTR (def, 0));
+ for (i = 0; i < vect_length; i++)
+ {
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_unit;
+ decl->pos = 0;
+ decl->decl.unit.name = check_name (str_cpu_units [i], decl->pos);
+ decl->decl.unit.automaton_name = (char *) XSTR (def, 1);
+ decl->decl.unit.query_p = 1;
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+ }
+}
+
+/* Process a DEFINE_BYPASS.
+
+ This gives information about a unit contained in the CPU. We fill
+ in a struct bypass_decl with information used later by
+ `expand_automata'. */
+void
+gen_bypass (def)
+ rtx def;
+{
+ decl_t decl;
+ char **out_insns;
+ int out_length;
+ char **in_insns;
+ int in_length;
+ int i, j;
+
+ out_insns = get_str_vect ((char *) XSTR (def, 1), &out_length, ',', 0);
+ if (out_insns == NULL)
+ fatal ("invalid string `%s' in define_bypass", XSTR (def, 1));
+ in_insns = get_str_vect ((char *) XSTR (def, 2), &in_length, ',', 0);
+ if (in_insns == NULL)
+ fatal ("invalid string `%s' in define_bypass", XSTR (def, 2));
+ for (i = 0; i < out_length; i++)
+ for (j = 0; j < in_length; j++)
+ {
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_bypass;
+ decl->pos = 0;
+ decl->decl.bypass.latency = XINT (def, 0);
+ decl->decl.bypass.out_insn_name = out_insns [i];
+ decl->decl.bypass.in_insn_name = in_insns [j];
+ decl->decl.bypass.bypass_guard_name = (char *) XSTR (def, 3);
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+ }
+}
+
+/* Process a EXCLUSION_SET.
+
+ This gives information about a cpu unit conflicts. We fill a
+ struct unit_rel_decl (excl) with information used later by
+ `expand_automata'. */
+void
+gen_excl_set (def)
+ rtx def;
+{
+ decl_t decl;
+ char **first_str_cpu_units;
+ char **second_str_cpu_units;
+ int first_vect_length;
+ int length;
+ int i;
+
+ first_str_cpu_units
+ = get_str_vect ((char *) XSTR (def, 0), &first_vect_length, ',', 0);
+ if (first_str_cpu_units == NULL)
+ fatal ("invalid first string `%s' in exclusion_set", XSTR (def, 0));
+ second_str_cpu_units = get_str_vect ((char *) XSTR (def, 1), &length, ',',
+ 0);
+ if (second_str_cpu_units == NULL)
+ fatal ("invalid second string `%s' in exclusion_set", XSTR (def, 1));
+ length += first_vect_length;
+ decl = create_node (sizeof (struct decl) + (length - 1) * sizeof (char *));
+ decl->mode = dm_excl;
+ decl->pos = 0;
+ decl->decl.excl.names_num = length;
+ decl->decl.excl.first_list_length = first_vect_length;
+ for (i = 0; i < length; i++)
+ if (i < first_vect_length)
+ decl->decl.excl.names [i] = first_str_cpu_units [i];
+ else
+ decl->decl.excl.names [i] = second_str_cpu_units [i - first_vect_length];
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+}
+
+/* Process a PRESENCE_SET.
+
+ This gives information about a cpu unit reservation requirements.
+ We fill a struct unit_rel_decl (presence) with information used
+ later by `expand_automata'. */
+void
+gen_presence_set (def)
+ rtx def;
+{
+ decl_t decl;
+ char **first_str_cpu_units;
+ char **second_str_cpu_units;
+ int first_vect_length;
+ int length;
+ int i;
+
+ first_str_cpu_units
+ = get_str_vect ((char *) XSTR (def, 0), &first_vect_length, ',', 0);
+ if (first_str_cpu_units == NULL)
+ fatal ("invalid first string `%s' in presence_set", XSTR (def, 0));
+ second_str_cpu_units = get_str_vect ((char *) XSTR (def, 1), &length, ',',
+ 0);
+ if (second_str_cpu_units == NULL)
+ fatal ("invalid second string `%s' in presence_set", XSTR (def, 1));
+ length += first_vect_length;
+ decl = create_node (sizeof (struct decl) + (length - 1) * sizeof (char *));
+ decl->mode = dm_presence;
+ decl->pos = 0;
+ decl->decl.presence.names_num = length;
+ decl->decl.presence.first_list_length = first_vect_length;
+ for (i = 0; i < length; i++)
+ if (i < first_vect_length)
+ decl->decl.presence.names [i] = first_str_cpu_units [i];
+ else
+ decl->decl.presence.names [i]
+ = second_str_cpu_units [i - first_vect_length];
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+}
+
+/* Process a ABSENCE_SET.
+
+ This gives information about a cpu unit reservation requirements.
+ We fill a struct unit_rel_decl (absence) with information used
+ later by `expand_automata'. */
+void
+gen_absence_set (def)
+ rtx def;
+{
+ decl_t decl;
+ char **first_str_cpu_units;
+ char **second_str_cpu_units;
+ int first_vect_length;
+ int length;
+ int i;
+
+ first_str_cpu_units
+ = get_str_vect ((char *) XSTR (def, 0), &first_vect_length, ',', 0);
+ if (first_str_cpu_units == NULL)
+ fatal ("invalid first string `%s' in absence_set", XSTR (def, 0));
+ second_str_cpu_units = get_str_vect ((char *) XSTR (def, 1), &length, ',',
+ 0);
+ if (second_str_cpu_units == NULL)
+ fatal ("invalid second string `%s' in absence_set", XSTR (def, 1));
+ length += first_vect_length;
+ decl = create_node (sizeof (struct decl) + (length - 1) * sizeof (char *));
+ decl->mode = dm_absence;
+ decl->pos = 0;
+ decl->decl.absence.names_num = length;
+ decl->decl.absence.first_list_length = first_vect_length;
+ for (i = 0; i < length; i++)
+ if (i < first_vect_length)
+ decl->decl.absence.names [i] = first_str_cpu_units [i];
+ else
+ decl->decl.absence.names [i]
+ = second_str_cpu_units [i - first_vect_length];
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+}
+
+/* Process a DEFINE_AUTOMATON.
+
+ This gives information about a finite state automaton used for
+ recognizing pipeline hazards. We fill a struct automaton_decl
+ with information used later by `expand_automata'. */
+void
+gen_automaton (def)
+ rtx def;
+{
+ decl_t decl;
+ char **str_automata;
+ int vect_length;
+ int i;
+
+ str_automata = get_str_vect ((char *) XSTR (def, 0), &vect_length, ',', 0);
+ if (str_automata == NULL)
+ fatal ("invalid string `%s' in define_automaton", XSTR (def, 0));
+ for (i = 0; i < vect_length; i++)
+ {
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_automaton;
+ decl->pos = 0;
+ decl->decl.automaton.name = check_name (str_automata [i], decl->pos);
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+ }
+}
+
+/* Process a AUTOMATA_OPTION.
+
+ This gives information how to generate finite state automaton used
+ for recognizing pipeline hazards. */
+void
+gen_automata_option (def)
+ rtx def;
+{
+ if (strcmp ((char *) XSTR (def, 0), NO_MINIMIZATION_OPTION + 1) == 0)
+ no_minimization_flag = 1;
+ else if (strcmp ((char *) XSTR (def, 0), W_OPTION + 1) == 0)
+ w_flag = 1;
+ else if (strcmp ((char *) XSTR (def, 0), NDFA_OPTION + 1) == 0)
+ ndfa_flag = 1;
+ else
+ fatal ("invalid option `%s' in automata_option", XSTR (def, 0));
+}
+
+/* Name in reservation to denote absence reservation. */
+#define NOTHING_NAME "nothing"
+
+/* The following string contains original reservation string being
+ parsed. */
+static char *reserv_str;
+
+/* Parse an element in STR. */
+static regexp_t
+gen_regexp_el (str)
+ char *str;
+{
+ regexp_t regexp;
+ int len;
+
+ if (*str == '(')
+ {
+ len = strlen (str);
+ if (str [len - 1] != ')')
+ fatal ("garbage after ) in reservation `%s'", reserv_str);
+ str [len - 1] = '\0';
+ regexp = gen_regexp_sequence (str + 1);
+ }
+ else if (strcmp (str, NOTHING_NAME) == 0)
+ {
+ regexp = create_node (sizeof (struct decl));
+ regexp->mode = rm_nothing;
+ }
+ else
+ {
+ regexp = create_node (sizeof (struct decl));
+ regexp->mode = rm_unit;
+ regexp->regexp.unit.name = str;
+ }
+ return regexp;
+}
+
+/* Parse construction `repeat' in STR. */
+static regexp_t
+gen_regexp_repeat (str)
+ char *str;
+{
+ regexp_t regexp;
+ regexp_t repeat;
+ char **repeat_vect;
+ int els_num;
+ int i;
+
+ repeat_vect = get_str_vect (str, &els_num, '*', 1);
+ if (repeat_vect == NULL)
+ fatal ("invalid `%s' in reservation `%s'", str, reserv_str);
+ if (els_num > 1)
+ {
+ regexp = gen_regexp_el (repeat_vect [0]);
+ for (i = 1; i < els_num; i++)
+ {
+ repeat = create_node (sizeof (struct regexp));
+ repeat->mode = rm_repeat;
+ repeat->regexp.repeat.regexp = regexp;
+ repeat->regexp.repeat.repeat_num = atoi (repeat_vect [i]);
+ if (repeat->regexp.repeat.repeat_num <= 1)
+ fatal ("repetition `%s' <= 1 in reservation `%s'",
+ str, reserv_str);
+ regexp = repeat;
+ }
+ return regexp;
+ }
+ else
+ return gen_regexp_el (str);
+}
+
+/* Parse reservation STR which possibly contains separator '+'. */
+static regexp_t
+gen_regexp_allof (str)
+ char *str;
+{
+ regexp_t allof;
+ char **allof_vect;
+ int els_num;
+ int i;
+
+ allof_vect = get_str_vect (str, &els_num, '+', 1);
+ if (allof_vect == NULL)
+ fatal ("invalid `%s' in reservation `%s'", str, reserv_str);
+ if (els_num > 1)
+ {
+ allof = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t) * (els_num - 1));
+ allof->mode = rm_allof;
+ allof->regexp.allof.regexps_num = els_num;
+ for (i = 0; i < els_num; i++)
+ allof->regexp.allof.regexps [i] = gen_regexp_repeat (allof_vect [i]);
+ return allof;
+ }
+ else
+ return gen_regexp_repeat (str);
+}
+
+/* Parse reservation STR which possibly contains separator '|'. */
+static regexp_t
+gen_regexp_oneof (str)
+ char *str;
+{
+ regexp_t oneof;
+ char **oneof_vect;
+ int els_num;
+ int i;
+
+ oneof_vect = get_str_vect (str, &els_num, '|', 1);
+ if (oneof_vect == NULL)
+ fatal ("invalid `%s' in reservation `%s'", str, reserv_str);
+ if (els_num > 1)
+ {
+ oneof = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t) * (els_num - 1));
+ oneof->mode = rm_oneof;
+ oneof->regexp.oneof.regexps_num = els_num;
+ for (i = 0; i < els_num; i++)
+ oneof->regexp.oneof.regexps [i] = gen_regexp_allof (oneof_vect [i]);
+ return oneof;
+ }
+ else
+ return gen_regexp_allof (str);
+}
+
+/* Parse reservation STR which possibly contains separator ','. */
+static regexp_t
+gen_regexp_sequence (str)
+ char *str;
+{
+ regexp_t sequence;
+ char **sequence_vect;
+ int els_num;
+ int i;
+
+ sequence_vect = get_str_vect (str, &els_num, ',', 1);
+ if (els_num > 1)
+ {
+ sequence = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t) * (els_num - 1));
+ sequence->mode = rm_sequence;
+ sequence->regexp.sequence.regexps_num = els_num;
+ for (i = 0; i < els_num; i++)
+ sequence->regexp.sequence.regexps [i]
+ = gen_regexp_oneof (sequence_vect [i]);
+ return sequence;
+ }
+ else
+ return gen_regexp_oneof (str);
+}
+
+/* Parse construction reservation STR. */
+static regexp_t
+gen_regexp (str)
+ char *str;
+{
+ reserv_str = str;
+ return gen_regexp_sequence (str);;
+}
+
+/* Process a DEFINE_RESERVATION.
+
+ This gives information about a reservation of cpu units. We fill
+ in a struct reserv_decl with information used later by
+ `expand_automata'. */
+void
+gen_reserv (def)
+ rtx def;
+{
+ decl_t decl;
+
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_reserv;
+ decl->pos = 0;
+ decl->decl.reserv.name = check_name ((char *) XSTR (def, 0), decl->pos);
+ decl->decl.reserv.regexp = gen_regexp ((char *) XSTR (def, 1));
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+}
+
+/* Process a DEFINE_INSN_RESERVATION.
+
+ This gives information about the reservation of cpu units by an
+ insn. We fill a struct insn_reserv_decl with information used
+ later by `expand_automata'. */
+void
+gen_insn_reserv (def)
+ rtx def;
+{
+ decl_t decl;
+
+ decl = create_node (sizeof (struct decl));
+ decl->mode = dm_insn_reserv;
+ decl->pos = 0;
+ decl->decl.insn_reserv.name = check_name ((char *) XSTR (def, 0), decl->pos);
+ decl->decl.insn_reserv.default_latency = XINT (def, 1);
+ decl->decl.insn_reserv.condexp = XEXP (def, 2);
+ decl->decl.insn_reserv.regexp = gen_regexp ((char *) XSTR (def, 3));
+ VLA_PTR_ADD (decls, decl);
+ num_dfa_decls++;
+}
+
+\f
+
+/* The function evaluates hash value (0..UINT_MAX) of string. */
+static unsigned
+string_hash (string)
+ const char *string;
+{
+ unsigned result, i;
+
+ for (result = i = 0;*string++ != '\0'; i++)
+ result += ((unsigned char) *string << (i % CHAR_BIT));
+ return result;
+}
+
+\f
+
+/* This page contains abstract data `table of automaton declarations'.
+ Elements of the table is nodes representing automaton declarations.
+ Key of the table elements is name of given automaton. Rememeber
+ that automaton names have own space. */
+
+/* The function evaluates hash value of a automaton declaration. The
+ function is used by abstract data `hashtab'. The function returns
+ hash value (0..UINT_MAX) of given automaton declaration. */
+static unsigned
+automaton_decl_hash (automaton_decl)
+ const void *automaton_decl;
+{
+ const decl_t decl = (decl_t) automaton_decl;
+
+ if (decl->mode == dm_automaton && decl->decl.automaton.name == NULL)
+ abort ();
+ return string_hash (decl->decl.automaton.name);
+}
+
+/* The function tests automaton declarations on equality of their
+ keys. The function is used by abstract data `hashtab'. The
+ function returns 1 if the declarations have the same key, 0
+ otherwise. */
+static int
+automaton_decl_eq_p (automaton_decl_1, automaton_decl_2)
+ const void* automaton_decl_1;
+ const void* automaton_decl_2;
+{
+ const decl_t decl1 = (decl_t) automaton_decl_1;
+ const decl_t decl2 = (decl_t) automaton_decl_2;
+
+ if (decl1->mode != dm_automaton || decl1->decl.automaton.name == NULL
+ || decl2->mode != dm_automaton || decl2->decl.automaton.name == NULL)
+ abort ();
+ return strcmp (decl1->decl.automaton.name, decl2->decl.automaton.name) == 0;
+}
+
+/* The automaton declaration table itself is represented by the
+ following variable. */
+static htab_t automaton_decl_table;
+
+/* The function inserts automaton declaration into the table. The
+ function does nothing if an automaton declaration with the same key
+ exists already in the table. The function returns automaton
+ declaration node in the table with the same key as given automaton
+ declaration node. */
+static decl_t
+insert_automaton_decl (automaton_decl)
+ decl_t automaton_decl;
+{
+ void **entry_ptr;
+
+ entry_ptr = htab_find_slot (automaton_decl_table, automaton_decl, 1);
+ if (*entry_ptr == NULL)
+ *entry_ptr = (void *) automaton_decl;
+ return (decl_t) *entry_ptr;
+}
+
+/* The following variable value is node representing automaton
+ declaration. The node used for searching automaton declaration
+ with given name. */
+static struct decl work_automaton_decl;
+
+/* The function searches for automaton declaration in the table with
+ the same key as node representing name of the automaton
+ declaration. The function returns node found in the table, NULL if
+ such node does not exist in the table. */
+static decl_t
+find_automaton_decl (name)
+ char *name;
+{
+ void *entry;
+
+ work_automaton_decl.decl.automaton.name = name;
+ entry = htab_find (automaton_decl_table, &work_automaton_decl);
+ return (decl_t) entry;
+}
+
+/* The function creates empty automaton declaration table and node
+ representing automaton declaration and used for searching automaton
+ declaration with given name. The function must be called only once
+ before any work with the automaton declaration table. */
+static void
+initiate_automaton_decl_table ()
+{
+ work_automaton_decl.mode = dm_automaton;
+ automaton_decl_table = htab_create (10, automaton_decl_hash,
+ automaton_decl_eq_p, (htab_del) 0);
+}
+
+/* The function deletes the automaton declaration table. Only call of
+ function `initiate_automaton_decl_table' is possible immediately
+ after this function call. */
+static void
+finish_automaton_decl_table ()
+{
+ htab_delete (automaton_decl_table);
+}
+
+\f
+
+/* This page contains abstract data `table of insn declarations'.
+ Elements of the table is nodes representing insn declarations. Key
+ of the table elements is name of given insn (in corresponding
+ define_insn_reservation). Rememeber that insn names have own
+ space. */
+
+/* The function evaluates hash value of a insn declaration. The
+ function is used by abstract data `hashtab'. The function returns
+ hash value (0..UINT_MAX) of given insn declaration. */
+static unsigned
+insn_decl_hash (insn_decl)
+ const void *insn_decl;
+{
+ const decl_t decl = (decl_t) insn_decl;
+
+ if (decl->mode != dm_insn_reserv || decl->decl.insn_reserv.name == NULL)
+ abort ();
+ return string_hash (decl->decl.insn_reserv.name);
+}
+
+/* The function tests insn declarations on equality of their keys.
+ The function is used by abstract data `hashtab'. The function
+ returns 1 if declarations have the same key, 0 otherwise. */
+static int
+insn_decl_eq_p (insn_decl_1, insn_decl_2)
+ const void *insn_decl_1;
+ const void *insn_decl_2;
+{
+ const decl_t decl1 = (decl_t) insn_decl_1;
+ const decl_t decl2 = (decl_t) insn_decl_2;
+
+ if (decl1->mode != dm_insn_reserv || decl1->decl.insn_reserv.name == NULL
+ || decl2->mode != dm_insn_reserv || decl2->decl.insn_reserv.name == NULL)
+ abort ();
+ return strcmp (decl1->decl.insn_reserv.name,
+ decl2->decl.insn_reserv.name) == 0;
+}
+
+/* The insn declaration table itself is represented by the following
+ variable. The table does not contain insn reservation
+ declarations. */
+static htab_t insn_decl_table;
+
+/* The function inserts insn declaration into the table. The function
+ does nothing if an insn declaration with the same key exists
+ already in the table. The function returns insn declaration node
+ in the table with the same key as given insn declaration node. */
+static decl_t
+insert_insn_decl (insn_decl)
+ decl_t insn_decl;
+{
+ void **entry_ptr;
+
+ entry_ptr = htab_find_slot (insn_decl_table, insn_decl, 1);
+ if (*entry_ptr == NULL)
+ *entry_ptr = (void *) insn_decl;
+ return (decl_t) *entry_ptr;
+}
+
+/* The following variable value is node representing insn reservation
+ declaration. The node used for searching insn reservation
+ declaration with given name. */
+static struct decl work_insn_decl;
+
+/* The function searches for insn reservation declaration in the table
+ with the same key as node representing name of the insn reservation
+ declaration. The function returns node found in the table, NULL if
+ such node does not exist in the table. */
+static decl_t
+find_insn_decl (name)
+ char *name;
+{
+ void *entry;
+
+ work_insn_decl.decl.insn_reserv.name = name;
+ entry = htab_find (insn_decl_table, &work_insn_decl);
+ return (decl_t) entry;
+}
+
+/* The function creates empty insn declaration table and node
+ representing insn declaration and used for searching insn
+ declaration with given name. The function must be called only once
+ before any work with the insn declaration table. */
+static void
+initiate_insn_decl_table ()
+{
+ work_insn_decl.mode = dm_insn_reserv;
+ insn_decl_table = htab_create (10, insn_decl_hash, insn_decl_eq_p,
+ (htab_del) 0);
+}
+
+/* The function deletes the insn declaration table. Only call of
+ function `initiate_insn_decl_table' is possible immediately after
+ this function call. */
+static void
+finish_insn_decl_table ()
+{
+ htab_delete (insn_decl_table);
+}
+
+\f
+
+/* This page contains abstract data `table of declarations'. Elements
+ of the table is nodes representing declarations (of units and
+ reservations). Key of the table elements is names of given
+ declarations. */
+
+/* The function evaluates hash value of a declaration. The function
+ is used by abstract data `hashtab'. The function returns hash
+ value (0..UINT_MAX) of given declaration. */
+static unsigned
+decl_hash (decl)
+ const void *decl;
+{
+ const decl_t d = (const decl_t) decl;
+
+ if ((d->mode != dm_unit || d->decl.unit.name == NULL)
+ && (d->mode != dm_reserv || d->decl.reserv.name == NULL))
+ abort ();
+ return string_hash (d->mode == dm_unit
+ ? d->decl.unit.name : d->decl.reserv.name);
+}
+
+/* The function tests declarations on equality of their keys. The
+ function is used by abstract data `hashtab'. The function
+ returns 1 if the declarations have the same key, 0 otherwise. */
+static int
+decl_eq_p (decl_1, decl_2)
+ const void *decl_1;
+ const void *decl_2;
+{
+ const decl_t d1 = (const decl_t) decl_1;
+ const decl_t d2 = (const decl_t) decl_2;
+
+ if (((d1->mode != dm_unit || d1->decl.unit.name == NULL)
+ && (d1->mode != dm_reserv || d1->decl.reserv.name == NULL))
+ || ((d2->mode != dm_unit || d2->decl.unit.name == NULL)
+ && (d2->mode != dm_reserv || d2->decl.reserv.name == NULL)))
+ abort ();
+ return strcmp ((d1->mode == dm_unit
+ ? d1->decl.unit.name : d1->decl.reserv.name),
+ (d2->mode == dm_unit
+ ? d2->decl.unit.name : d2->decl.reserv.name)) == 0;
+}
+
+/* The declaration table itself is represented by the following
+ variable. */
+static htab_t decl_table;
+
+/* The function inserts declaration into the table. The function does
+ nothing if a declaration with the same key exists already in the
+ table. The function returns declaration node in the table with the
+ same key as given declaration node. */
+
+static decl_t
+insert_decl (decl)
+ decl_t decl;
+{
+ void **entry_ptr;
+
+ entry_ptr = htab_find_slot (decl_table, decl, 1);
+ if (*entry_ptr == NULL)
+ *entry_ptr = (void *) decl;
+ return (decl_t) *entry_ptr;
+}
+
+/* The following variable value is node representing declaration. The
+ node used for searching declaration with given name. */
+static struct decl work_decl;
+
+/* The function searches for declaration in the table with the same
+ key as node representing name of the declaration. The function
+ returns node found in the table, NULL if such node does not exist
+ in the table. */
+static decl_t
+find_decl (name)
+ char *name;
+{
+ void *entry;
+
+ work_decl.decl.unit.name = name;
+ entry = htab_find (decl_table, &work_decl);
+ return (decl_t) entry;
+}
+
+/* The function creates empty declaration table and node representing
+ declaration and used for searching declaration with given name.
+ The function must be called only once before any work with the
+ declaration table. */
+static void
+initiate_decl_table ()
+{
+ work_decl.mode = dm_unit;
+ decl_table = htab_create (10, decl_hash, decl_eq_p, (htab_del) 0);
+}
+
+/* The function deletes the declaration table. Only call of function
+ `initiate_declaration_table' is possible immediately after this
+ function call. */
+static void
+finish_decl_table ()
+{
+ htab_delete (decl_table);
+}
+
+\f
+
+/* This page contains checker of pipeline hazard description. */
+
+/* Checking NAMES in an exclusion clause vector and returning formed
+ unit_set_el_list. */
+static unit_set_el_t
+process_excls (names, num, excl_pos)
+ char **names;
+ int num;
+ pos_t excl_pos ATTRIBUTE_UNUSED;
+{
+ unit_set_el_t el_list;
+ unit_set_el_t last_el;
+ unit_set_el_t new_el;
+ decl_t decl_in_table;
+ int i;
+
+ el_list = NULL;
+ last_el = NULL;
+ for (i = 0; i < num; i++)
+ {
+ decl_in_table = find_decl (names [i]);
+ if (decl_in_table == NULL)
+ error ("unit `%s' in exclusion is not declared", names [i]);
+ else if (decl_in_table->mode != dm_unit)
+ error ("`%s' in exclusion is not unit", names [i]);
+ else
+ {
+ new_el = create_node (sizeof (struct unit_set_el));
+ new_el->unit_decl = &decl_in_table->decl.unit;
+ new_el->next_unit_set_el = NULL;
+ if (last_el == NULL)
+ el_list = last_el = new_el;
+ else
+ {
+ last_el->next_unit_set_el = new_el;
+ last_el = last_el->next_unit_set_el;
+ }
+ }
+ }
+ return el_list;
+}
+
+/* The function adds each element from SOURCE_LIST to the exclusion
+ list of the each element from DEST_LIST. Checking situation "unit
+ excludes itself". */
+static void
+add_excls (dest_list, source_list, excl_pos)
+ unit_set_el_t dest_list;
+ unit_set_el_t source_list;
+ pos_t excl_pos ATTRIBUTE_UNUSED;
+{
+ unit_set_el_t dst;
+ unit_set_el_t src;
+ unit_set_el_t curr_el;
+ unit_set_el_t prev_el;
+ unit_set_el_t copy;
+
+ for (dst = dest_list; dst != NULL; dst = dst->next_unit_set_el)
+ for (src = source_list; src != NULL; src = src->next_unit_set_el)
+ {
+ if (dst->unit_decl == src->unit_decl)
+ {
+ error ("unit `%s' excludes itself", src->unit_decl->name);
+ continue;
+ }
+ if (dst->unit_decl->automaton_name != NULL
+ && src->unit_decl->automaton_name != NULL
+ && strcmp (dst->unit_decl->automaton_name,
+ src->unit_decl->automaton_name) != 0)
+ {
+ error ("units `%s' and `%s' in exclusion set belong to different automata",
+ src->unit_decl->name, dst->unit_decl->name);
+ continue;
+ }
+ for (curr_el = dst->unit_decl->excl_list, prev_el = NULL;
+ curr_el != NULL;
+ prev_el = curr_el, curr_el = curr_el->next_unit_set_el)
+ if (curr_el->unit_decl == src->unit_decl)
+ break;
+ if (curr_el == NULL)
+ {
+ /* Element not found - insert. */
+ copy = copy_node (src, sizeof (*src));
+ copy->next_unit_set_el = NULL;
+ if (prev_el == NULL)
+ dst->unit_decl->excl_list = copy;
+ else
+ prev_el->next_unit_set_el = copy;
+ }
+ }
+}
+
+/* Checking NAMES in an presence clause vector and returning formed
+ unit_set_el_list. The function is called only after processing all
+ exclusion sets. */
+static unit_set_el_t
+process_presence_absence (names, num, req_pos, presence_p)
+ char **names;
+ int num;
+ pos_t req_pos ATTRIBUTE_UNUSED;
+ int presence_p;
+{
+ unit_set_el_t el_list;
+ unit_set_el_t last_el;
+ unit_set_el_t new_el;
+ decl_t decl_in_table;
+ int i;
+
+ el_list = NULL;
+ last_el = NULL;
+ for (i = 0; i < num; i++)
+ {
+ decl_in_table = find_decl (names [i]);
+ if (decl_in_table == NULL)
+ error ((presence_p
+ ? "unit `%s' in presence set is not declared"
+ : "unit `%s' in absence set is not declared"), names [i]);
+ else if (decl_in_table->mode != dm_unit)
+ error ((presence_p
+ ? "`%s' in presence set is not unit"
+ : "`%s' in absence set is not unit"), names [i]);
+ else
+ {
+ new_el = create_node (sizeof (struct unit_set_el));
+ new_el->unit_decl = &decl_in_table->decl.unit;
+ new_el->next_unit_set_el = NULL;
+ if (last_el == NULL)
+ el_list = last_el = new_el;
+ else
+ {
+ last_el->next_unit_set_el = new_el;
+ last_el = last_el->next_unit_set_el;
+ }
+ }
+ }
+ return el_list;
+}
+
+/* The function adds each element from SOURCE_LIST to presence (if
+ PRESENCE_P) or absence list of the each element from DEST_LIST.
+ Checking situations "unit requires own presence", "unit requires
+ own absence", and "unit excludes and requires presence of ...".
+ Remember that we process absence sets only after all presence
+ sets. */
+static void
+add_presence_absence (dest_list, source_list, req_pos, presence_p)
+ unit_set_el_t dest_list;
+ unit_set_el_t source_list;
+ pos_t req_pos ATTRIBUTE_UNUSED;
+ int presence_p;
+{
+ unit_set_el_t dst;
+ unit_set_el_t src;
+ unit_set_el_t curr_el;
+ unit_set_el_t prev_el;
+ unit_set_el_t copy;
+
+ for (dst = dest_list; dst != NULL; dst = dst->next_unit_set_el)
+ for (src = source_list; src != NULL; src = src->next_unit_set_el)
+ {
+ if (dst->unit_decl == src->unit_decl)
+ {
+ error ((presence_p
+ ? "unit `%s' requires own presence"
+ : "unit `%s' requires own absence"), src->unit_decl->name);
+ continue;
+ }
+ if (dst->unit_decl->automaton_name != NULL
+ && src->unit_decl->automaton_name != NULL
+ && strcmp (dst->unit_decl->automaton_name,
+ src->unit_decl->automaton_name) != 0)
+ {
+ error ((presence_p
+ ? "units `%s' and `%s' in presence set belong to different automata"
+ : "units `%s' and `%s' in absence set belong to different automata"),
+ src->unit_decl->name, dst->unit_decl->name);
+ continue;
+ }
+ for (curr_el = (presence_p
+ ? dst->unit_decl->presence_list
+ : dst->unit_decl->absence_list), prev_el = NULL;
+ curr_el != NULL;
+ prev_el = curr_el, curr_el = curr_el->next_unit_set_el)
+ if (curr_el->unit_decl == src->unit_decl)
+ break;
+ if (curr_el == NULL)
+ {
+ /* Element not found - insert if there is no error. */
+ int no_error_flag = 1;
+
+ if (presence_p)
+ for (curr_el = dst->unit_decl->excl_list;
+ curr_el != NULL;
+ curr_el = curr_el->next_unit_set_el)
+ {
+ if (src->unit_decl == curr_el->unit_decl)
+ {
+ if (!w_flag)
+ {
+ error
+ ("unit `%s' excludes and requires presence of `%s'",
+ dst->unit_decl->name, src->unit_decl->name);
+ no_error_flag = 0;
+ }
+ else
+ warning
+ ("unit `%s' excludes and requires presence of `%s'",
+ dst->unit_decl->name, src->unit_decl->name);
+ }
+ }
+ else
+ for (curr_el = dst->unit_decl->presence_list;
+ curr_el != NULL;
+ curr_el = curr_el->next_unit_set_el)
+ {
+ if (src->unit_decl == curr_el->unit_decl)
+ {
+ if (!w_flag)
+ {
+ error
+ ("unit `%s' requires absence and presence of `%s'",
+ dst->unit_decl->name, src->unit_decl->name);
+ no_error_flag = 0;
+ }
+ else
+ warning
+ ("unit `%s' requires absence and presence of `%s'",
+ dst->unit_decl->name, src->unit_decl->name);
+ }
+ }
+ if (no_error_flag)
+ {
+ copy = copy_node (src, sizeof (*src));
+ copy->next_unit_set_el = NULL;
+ if (prev_el == NULL)
+ {
+ if (presence_p)
+ dst->unit_decl->presence_list = copy;
+ else
+ dst->unit_decl->absence_list = copy;
+ }
+ else
+ prev_el->next_unit_set_el = copy;
+ }
+ }
+ }
+}
+
+/* The function searches for bypass with given IN_INSN_RESERV in given
+ BYPASS_LIST. */
+static struct bypass_decl *
+find_bypass (bypass_list, in_insn_reserv)
+ struct bypass_decl *bypass_list;
+ struct insn_reserv_decl *in_insn_reserv;
+{
+ struct bypass_decl *bypass;
+
+ for (bypass = bypass_list; bypass != NULL; bypass = bypass->next)
+ if (bypass->in_insn_reserv == in_insn_reserv)
+ break;
+ return bypass;
+}
+
+/* The function processes pipeline description declarations, checks
+ their correctness, and forms exclusion/presence/absence sets. */
+static void
+process_decls ()
+{
+ decl_t decl;
+ decl_t automaton_decl;
+ decl_t decl_in_table;
+ decl_t out_insn_reserv;
+ decl_t in_insn_reserv;
+ struct bypass_decl *bypass;
+ int automaton_presence;
+ int i;
+
+ /* Checking repeated automata declarations. */
+ automaton_presence = 0;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_automaton)
+ {
+ automaton_presence = 1;
+ decl_in_table = insert_automaton_decl (decl);
+ if (decl_in_table != decl)
+ {
+ if (!w_flag)
+ error ("repeated declaration of automaton `%s'",
+ decl->decl.automaton.name);
+ else
+ warning ("repeated declaration of automaton `%s'",
+ decl->decl.automaton.name);
+ }
+ }
+ }
+ /* Checking undeclared automata, repeated declarations (except for
+ automata) and correctness of their attributes (insn latency times
+ etc.). */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ {
+ decl->decl.insn_reserv.condexp
+ = check_attr_test (decl->decl.insn_reserv.condexp, 0, 0);
+ if (decl->decl.insn_reserv.default_latency < 0)
+ error ("define_insn_reservation `%s' has negative latency time",
+ decl->decl.insn_reserv.name);
+ decl->decl.insn_reserv.insn_num = description->insns_num;
+ description->insns_num++;
+ decl_in_table = insert_insn_decl (decl);
+ if (decl_in_table != decl)
+ error ("`%s' is already used as insn reservation name",
+ decl->decl.insn_reserv.name);
+ }
+ else if (decl->mode == dm_bypass)
+ {
+ if (decl->decl.bypass.latency < 0)
+ error ("define_bypass `%s - %s' has negative latency time",
+ decl->decl.bypass.out_insn_name,
+ decl->decl.bypass.in_insn_name);
+ }
+ else if (decl->mode == dm_unit || decl->mode == dm_reserv)
+ {
+ if (decl->mode == dm_unit)
+ {
+ decl->decl.unit.automaton_decl = NULL;
+ if (decl->decl.unit.automaton_name != NULL)
+ {
+ automaton_decl
+ = find_automaton_decl (decl->decl.unit.automaton_name);
+ if (automaton_decl == NULL)
+ error ("automaton `%s' is not declared",
+ decl->decl.unit.automaton_name);
+ else
+ {
+ automaton_decl->decl.automaton.automaton_is_used = 1;
+ decl->decl.unit.automaton_decl
+ = &automaton_decl->decl.automaton;
+ }
+ }
+ else if (automaton_presence)
+ error ("define_unit `%s' without automaton when one defined",
+ decl->decl.unit.name);
+ decl->decl.unit.unit_num = description->units_num;
+ description->units_num++;
+ if (strcmp (decl->decl.unit.name, NOTHING_NAME) == 0)
+ {
+ error ("`%s' is declared as cpu unit", NOTHING_NAME);
+ continue;
+ }
+ decl_in_table = find_decl (decl->decl.unit.name);
+ }
+ else
+ {
+ if (strcmp (decl->decl.reserv.name, NOTHING_NAME) == 0)
+ {
+ error ("`%s' is declared as cpu reservation", NOTHING_NAME);
+ continue;
+ }
+ decl_in_table = find_decl (decl->decl.reserv.name);
+ }
+ if (decl_in_table == NULL)
+ decl_in_table = insert_decl (decl);
+ else
+ {
+ if (decl->mode == dm_unit)
+ error ("repeated declaration of unit `%s'",
+ decl->decl.unit.name);
+ else
+ error ("repeated declaration of reservation `%s'",
+ decl->decl.reserv.name);
+ }
+ }
+ }
+ /* Check bypasses and form list of bypasses for each (output)
+ insn. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_bypass)
+ {
+ out_insn_reserv = find_insn_decl (decl->decl.bypass.out_insn_name);
+ in_insn_reserv = find_insn_decl (decl->decl.bypass.in_insn_name);
+ if (out_insn_reserv == NULL)
+ error ("there is no insn reservation `%s'",
+ decl->decl.bypass.out_insn_name);
+ else if (in_insn_reserv == NULL)
+ error ("there is no insn reservation `%s'",
+ decl->decl.bypass.in_insn_name);
+ else
+ {
+ decl->decl.bypass.out_insn_reserv
+ = &out_insn_reserv->decl.insn_reserv;
+ decl->decl.bypass.in_insn_reserv
+ = &in_insn_reserv->decl.insn_reserv;
+ bypass
+ = find_bypass (out_insn_reserv->decl.insn_reserv.bypass_list,
+ decl->decl.bypass.in_insn_reserv);
+ if (bypass != NULL)
+ {
+ if (decl->decl.bypass.latency == bypass->latency)
+ {
+ if (!w_flag)
+ error
+ ("the same bypass `%s - %s' is already defined",
+ decl->decl.bypass.out_insn_name,
+ decl->decl.bypass.in_insn_name);
+ else
+ warning
+ ("the same bypass `%s - %s' is already defined",
+ decl->decl.bypass.out_insn_name,
+ decl->decl.bypass.in_insn_name);
+ }
+ else
+ error ("bypass `%s - %s' is already defined",
+ decl->decl.bypass.out_insn_name,
+ decl->decl.bypass.in_insn_name);
+ }
+ else
+ {
+ decl->decl.bypass.next
+ = out_insn_reserv->decl.insn_reserv.bypass_list;
+ out_insn_reserv->decl.insn_reserv.bypass_list
+ = &decl->decl.bypass;
+ }
+ }
+ }
+ }
+
+ /* Check exclusion set declarations and form exclussion sets. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_excl)
+ {
+ unit_set_el_t unit_set_el_list;
+ unit_set_el_t unit_set_el_list_2;
+
+ unit_set_el_list
+ = process_excls (decl->decl.excl.names,
+ decl->decl.excl.first_list_length, decl->pos);
+ unit_set_el_list_2
+ = process_excls (&decl->decl.excl.names
+ [decl->decl.excl.first_list_length],
+ decl->decl.excl.names_num
+ - decl->decl.excl.first_list_length,
+ decl->pos);
+ add_excls (unit_set_el_list, unit_set_el_list_2, decl->pos);
+ add_excls (unit_set_el_list_2, unit_set_el_list, decl->pos);
+ }
+ }
+
+ /* Check presence set declarations and form presence sets. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_presence)
+ {
+ unit_set_el_t unit_set_el_list;
+ unit_set_el_t unit_set_el_list_2;
+
+ unit_set_el_list
+ = process_presence_absence
+ (decl->decl.presence.names,
+ decl->decl.presence.first_list_length, decl->pos, 1);
+ unit_set_el_list_2
+ = process_presence_absence
+ (&decl->decl.presence.names
+ [decl->decl.presence.first_list_length],
+ decl->decl.presence.names_num
+ - decl->decl.presence.first_list_length,
+ decl->pos, 1);
+ add_presence_absence (unit_set_el_list, unit_set_el_list_2,
+ decl->pos, 1);
+ }
+ }
+
+ /* Check absence set declarations and form absence sets. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_absence)
+ {
+ unit_set_el_t unit_set_el_list;
+ unit_set_el_t unit_set_el_list_2;
+
+ unit_set_el_list
+ = process_presence_absence
+ (decl->decl.presence.names,
+ decl->decl.presence.first_list_length, decl->pos, 0);
+ unit_set_el_list_2
+ = process_presence_absence
+ (&decl->decl.presence.names
+ [decl->decl.presence.first_list_length],
+ decl->decl.presence.names_num
+ - decl->decl.presence.first_list_length,
+ decl->pos, 0);
+ add_presence_absence (unit_set_el_list, unit_set_el_list_2,
+ decl->pos, 0);
+ }
+ }
+}
+
+/* The following function checks that declared automaton is used. If
+ the automaton is not used, the function fixes error/warning. The
+ following function must be called only after `process_decls'. */
+static void
+check_automaton_usage ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_automaton
+ && !decl->decl.automaton.automaton_is_used)
+ {
+ if (!w_flag)
+ error ("automaton `%s' is not used", decl->decl.automaton.name);
+ else
+ warning ("automaton `%s' is not used", decl->decl.automaton.name);
+ }
+ }
+}
+
+/* The following recursive function processes all regexp in order to
+ fix usage of units or reservations and to fix errors of undeclared
+ name. The function may change unit_regexp onto reserv_regexp.
+ Remember that reserv_regexp does not exist before the function
+ call. */
+static regexp_t
+process_regexp (regexp)
+ regexp_t regexp;
+{
+ decl_t decl_in_table;
+ regexp_t new_regexp;
+ int i;
+
+ if (regexp->mode == rm_unit)
+ {
+ decl_in_table = find_decl (regexp->regexp.unit.name);
+ if (decl_in_table == NULL)
+ error ("undeclared unit or reservation `%s'",
+ regexp->regexp.unit.name);
+ else if (decl_in_table->mode == dm_unit)
+ {
+ decl_in_table->decl.unit.unit_is_used = 1;
+ regexp->regexp.unit.unit_decl = &decl_in_table->decl.unit;
+ }
+ else if (decl_in_table->mode == dm_reserv)
+ {
+ decl_in_table->decl.reserv.reserv_is_used = 1;
+ new_regexp = create_node (sizeof (struct regexp));
+ new_regexp->mode = rm_reserv;
+ new_regexp->pos = regexp->pos;
+ new_regexp->regexp.reserv.name = regexp->regexp.unit.name;
+ new_regexp->regexp.reserv.reserv_decl = &decl_in_table->decl.reserv;
+ regexp = new_regexp;
+ }
+ else
+ abort ();
+ }
+ else if (regexp->mode == rm_sequence)
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ regexp->regexp.sequence.regexps [i]
+ = process_regexp (regexp->regexp.sequence.regexps [i]);
+ else if (regexp->mode == rm_allof)
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ regexp->regexp.allof.regexps [i]
+ = process_regexp (regexp->regexp.allof.regexps [i]);
+ else if (regexp->mode == rm_oneof)
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ regexp->regexp.oneof.regexps [i]
+ = process_regexp (regexp->regexp.oneof.regexps [i]);
+ else if (regexp->mode == rm_repeat)
+ regexp->regexp.repeat.regexp
+ = process_regexp (regexp->regexp.repeat.regexp);
+ else if (regexp->mode != rm_nothing)
+ abort ();
+ return regexp;
+}
+
+/* The following function processes regexp of define_reservation and
+ define_insn_reservation with the aid of function
+ `process_regexp'. */
+static void
+process_regexp_decls ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_reserv)
+ decl->decl.reserv.regexp = process_regexp (decl->decl.reserv.regexp);
+ else if (decl->mode == dm_insn_reserv)
+ decl->decl.insn_reserv.regexp
+ = process_regexp (decl->decl.insn_reserv.regexp);
+ }
+}
+
+/* The following function checks that declared unit is used. If the
+ unit is not used, the function fixes errors/warnings. The
+ following function must be called only after `process_decls',
+ `process_regexp_decls'. */
+static void
+check_usage ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit && !decl->decl.unit.unit_is_used)
+ {
+ if (!w_flag)
+ error ("unit `%s' is not used", decl->decl.unit.name);
+ else
+ warning ("unit `%s' is not used", decl->decl.unit.name);
+ }
+ else if (decl->mode == dm_reserv && !decl->decl.reserv.reserv_is_used)
+ {
+ if (!w_flag)
+ error ("reservation `%s' is not used", decl->decl.reserv.name);
+ else
+ warning ("reservation `%s' is not used", decl->decl.reserv.name);
+ }
+ }
+}
+
+/* The following variable value is number of reservation being
+ processed on loop recognition. */
+static int curr_loop_pass_num;
+
+/* The following recursive function returns nonzero value if REGEXP
+ contains given decl or reservations in given regexp refers for
+ given decl. */
+static int
+loop_in_regexp (regexp, start_decl)
+ regexp_t regexp;
+ decl_t start_decl;
+{
+ int i;
+
+ if (regexp == NULL)
+ return 0;
+ if (regexp->mode == rm_unit)
+ return 0;
+ else if (regexp->mode == rm_reserv)
+ {
+ if (start_decl->mode == dm_reserv
+ && regexp->regexp.reserv.reserv_decl == &start_decl->decl.reserv)
+ return 1;
+ else if (regexp->regexp.reserv.reserv_decl->loop_pass_num
+ == curr_loop_pass_num)
+ /* declaration has been processed. */
+ return 0;
+ else
+ {
+ regexp->regexp.reserv.reserv_decl->loop_pass_num
+ = curr_loop_pass_num;
+ return loop_in_regexp (regexp->regexp.reserv.reserv_decl->regexp,
+ start_decl);
+ }
+ }
+ else if (regexp->mode == rm_sequence)
+ {
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ if (loop_in_regexp (regexp->regexp.sequence.regexps [i], start_decl))
+ return 1;
+ return 0;
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ if (loop_in_regexp (regexp->regexp.allof.regexps [i], start_decl))
+ return 1;
+ return 0;
+ }
+ else if (regexp->mode == rm_oneof)
+ {
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ if (loop_in_regexp (regexp->regexp.oneof.regexps [i], start_decl))
+ return 1;
+ return 0;
+ }
+ else if (regexp->mode == rm_repeat)
+ return loop_in_regexp (regexp->regexp.repeat.regexp, start_decl);
+ else
+ {
+ if (regexp->mode != rm_nothing)
+ abort ();
+ return 0;
+ }
+}
+
+/* The following function fixes errors "cycle in definition ...". The
+ function uses function `loop_in_regexp' for that. */
+static void
+check_loops_in_regexps ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_reserv)
+ decl->decl.reserv.loop_pass_num = 0;
+ }
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ curr_loop_pass_num = i;
+
+ if (decl->mode == dm_reserv)
+ {
+ decl->decl.reserv.loop_pass_num = curr_loop_pass_num;
+ if (loop_in_regexp (decl->decl.reserv.regexp, decl))
+ {
+ if (decl->decl.reserv.regexp == NULL)
+ abort ();
+ error ("cycle in definition of reservation `%s'",
+ decl->decl.reserv.name);
+ }
+ }
+ }
+}
+
+/* The function recursively processes IR of reservation and defines
+ max and min cycle for reservation of unit and for result in the
+ reservation. */
+static int
+process_regexp_cycles (regexp, start_cycle)
+ regexp_t regexp;
+ int start_cycle;
+{
+ int i;
+
+ if (regexp->mode == rm_unit)
+ {
+ if (regexp->regexp.unit.unit_decl->max_occ_cycle_num < start_cycle)
+ regexp->regexp.unit.unit_decl->max_occ_cycle_num = start_cycle;
+ return start_cycle;
+ }
+ else if (regexp->mode == rm_reserv)
+ return process_regexp_cycles (regexp->regexp.reserv.reserv_decl->regexp,
+ start_cycle);
+ else if (regexp->mode == rm_repeat)
+ {
+ for (i = 0; i < regexp->regexp.repeat.repeat_num; i++)
+ start_cycle = process_regexp_cycles (regexp->regexp.repeat.regexp,
+ start_cycle) + 1;
+ return start_cycle;
+ }
+ else if (regexp->mode == rm_sequence)
+ {
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ start_cycle
+ = process_regexp_cycles (regexp->regexp.sequence.regexps [i],
+ start_cycle) + 1;
+ return start_cycle;
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ int finish_cycle = 0;
+ int cycle;
+
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ {
+ cycle = process_regexp_cycles (regexp->regexp.allof.regexps [i],
+ start_cycle);
+ if (finish_cycle < cycle)
+ finish_cycle = cycle;
+ }
+ return finish_cycle;
+ }
+ else if (regexp->mode == rm_oneof)
+ {
+ int finish_cycle = 0;
+ int cycle;
+
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ {
+ cycle = process_regexp_cycles (regexp->regexp.oneof.regexps [i],
+ start_cycle);
+ if (finish_cycle < cycle)
+ finish_cycle = cycle;
+ }
+ return finish_cycle;
+ }
+ else
+ {
+ if (regexp->mode != rm_nothing)
+ abort ();
+ return start_cycle;
+ }
+}
+
+/* The following function is called only for correct program. The
+ function defines max reservation of insns in cycles. */
+static void
+evaluate_max_reserv_cycles ()
+{
+ int max_insn_cycles_num;
+ decl_t decl;
+ int i;
+
+ description->max_insn_reserv_cycles = 0;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ {
+ max_insn_cycles_num
+ = process_regexp_cycles (decl->decl.insn_reserv.regexp, 0);
+ if (description->max_insn_reserv_cycles < max_insn_cycles_num)
+ description->max_insn_reserv_cycles = max_insn_cycles_num;
+ }
+ }
+}
+
+/* The following function calls functions for checking all
+ description. */
+static void
+check_all_description ()
+{
+ process_decls ();
+ check_automaton_usage ();
+ process_regexp_decls ();
+ check_usage ();
+ check_loops_in_regexps ();
+ if (!have_error)
+ evaluate_max_reserv_cycles ();
+}
+
+\f
+
+/* The page contains abstract data `ticker'. This data is used to
+ report time of different phases of building automata. It is
+ possibly to write a description for which automata will be built
+ during several minutes even on fast machine. */
+
+/* The following function creates ticker and makes it active. */
+static ticker_t
+create_ticker ()
+{
+ ticker_t ticker;
+
+ ticker.modified_creation_time = get_run_time ();
+ ticker.incremented_off_time = 0;
+ return ticker;
+}
+
+/* The following function switches off given ticker. */
+static void
+ticker_off (ticker)
+ ticker_t *ticker;
+{
+ if (ticker->incremented_off_time == 0)
+ ticker->incremented_off_time = get_run_time () + 1;
+}
+
+/* The following function switches on given ticker. */
+static void
+ticker_on (ticker)
+ ticker_t *ticker;
+{
+ if (ticker->incremented_off_time != 0)
+ {
+ ticker->modified_creation_time
+ += get_run_time () - ticker->incremented_off_time + 1;
+ ticker->incremented_off_time = 0;
+ }
+}
+
+/* The following function returns current time in milliseconds since
+ the moment when given ticker was created. */
+static int
+active_time (ticker)
+ ticker_t ticker;
+{
+ if (ticker.incremented_off_time != 0)
+ return ticker.incremented_off_time - 1 - ticker.modified_creation_time;
+ else
+ return get_run_time () - ticker.modified_creation_time;
+}
+
+/* The following function returns string representation of active time
+ of given ticker. The result is string representation of seconds
+ with accuracy of 1/100 second. Only result of the last call of the
+ function exists. Therefore the following code is not correct
+
+ printf ("parser time: %s\ngeneration time: %s\n",
+ active_time_string (parser_ticker),
+ active_time_string (generation_ticker));
+
+ Correct code has to be the following
+
+ printf ("parser time: %s\n", active_time_string (parser_ticker));
+ printf ("generation time: %s\n",
+ active_time_string (generation_ticker));
+
+*/
+static void
+print_active_time (f, ticker)
+ FILE *f;
+ ticker_t ticker;
+{
+ int msecs;
+
+ msecs = active_time (ticker);
+ fprintf (f, "%d.%06d", msecs / 1000000, msecs % 1000000);
+}
+
+\f
+
+/* The following variable value is number of automaton which are
+ really being created. This value is defined on the base of
+ argument of option `-split'. If the variable has zero value the
+ number of automata is defined by the constructions `%automaton'.
+ This case occures when option `-split' is absent or has zero
+ argument. If constructions `define_automaton' is absent only one
+ automaton is created. */
+static int automata_num;
+
+/* The following variable values are times of
+ o transformation of regular expressions
+ o building NDFA (DFA if !ndfa_flag)
+ o NDFA -> DFA (simply the same automaton if !ndfa_flag)
+ o DFA minimization
+ o building insn equivalence classes
+ o all previous ones
+ o code output */
+static ticker_t transform_time;
+static ticker_t NDFA_time;
+static ticker_t NDFA_to_DFA_time;
+static ticker_t minimize_time;
+static ticker_t equiv_time;
+static ticker_t automaton_generation_time;
+static ticker_t output_time;
+
+/* The following variable values are times of
+ all checking
+ all generation
+ all pipeline hazard translator work */
+static ticker_t check_time;
+static ticker_t generation_time;
+static ticker_t all_time;
+
+\f
+
+/* Pseudo insn decl which denotes advancing cycle. */
+static decl_t advance_cycle_insn_decl;
+static void
+add_advance_cycle_insn_decl ()
+{
+ advance_cycle_insn_decl = create_node (sizeof (struct decl));
+ advance_cycle_insn_decl->mode = dm_insn_reserv;
+ advance_cycle_insn_decl->pos = no_pos;
+ advance_cycle_insn_decl->decl.insn_reserv.regexp = NULL;
+ advance_cycle_insn_decl->decl.insn_reserv.name = (char *) "$advance_cycle";
+ advance_cycle_insn_decl->decl.insn_reserv.insn_num = description->insns_num;
+ description->decls [description->decls_num] = advance_cycle_insn_decl;
+ description->decls_num++;
+ description->insns_num++;
+ num_dfa_decls++;
+}
+
+\f
+/* Abstract data `alternative states' which reperesents
+ nondeterministic nature of the description (see comments for
+ structures alt_state and state). */
+
+/* List of free states. */
+static alt_state_t first_free_alt_state;
+
+#ifndef NDEBUG
+/* The following variables is maximal number of allocated nodes
+ alt_state. */
+static int allocated_alt_states_num = 0;
+#endif
+
+/* The following function returns free node alt_state. It may be new
+ allocated node or node freed eralier. */
+static alt_state_t
+get_free_alt_state ()
+{
+ alt_state_t result;
+
+ if (first_free_alt_state != NULL)
+ {
+ result = first_free_alt_state;
+ first_free_alt_state = first_free_alt_state->next_alt_state;
+ }
+ else
+ {
+#ifndef NDEBUG
+ allocated_alt_states_num++;
+#endif
+ result = create_node (sizeof (struct alt_state));
+ }
+ result->state = NULL;
+ result->next_alt_state = NULL;
+ result->next_sorted_alt_state = NULL;
+ return result;
+}
+
+/* The function frees node ALT_STATE. */
+static void
+free_alt_state (alt_state)
+ alt_state_t alt_state;
+{
+ if (alt_state == NULL)
+ return;
+ alt_state->next_alt_state = first_free_alt_state;
+ first_free_alt_state = alt_state;
+}
+
+/* The function frees list started with node ALT_STATE_LIST. */
+static void
+free_alt_states (alt_states_list)
+ alt_state_t alt_states_list;
+{
+ alt_state_t curr_alt_state;
+ alt_state_t next_alt_state;
+
+ for (curr_alt_state = alt_states_list;
+ curr_alt_state != NULL;
+ curr_alt_state = next_alt_state)
+ {
+ next_alt_state = curr_alt_state->next_alt_state;
+ free_alt_state (curr_alt_state);
+ }
+}
+
+/* The function compares unique numbers of alt states. */
+static int
+alt_state_cmp (alt_state_ptr_1, alt_state_ptr_2)
+ const void *alt_state_ptr_1;
+ const void *alt_state_ptr_2;
+{
+ if ((*(alt_state_t *) alt_state_ptr_1)->state->unique_num
+ == (*(alt_state_t *) alt_state_ptr_2)->state->unique_num)
+ return 0;
+ else if ((*(alt_state_t *) alt_state_ptr_1)->state->unique_num
+ < (*(alt_state_t *) alt_state_ptr_2)->state->unique_num)
+ return -1;
+ else
+ return 1;
+}
+
+/* The function sorts ALT_STATES_LIST and removes duplicated alt
+ states from the list. The comparison key is alt state unique
+ number. */
+static alt_state_t
+uniq_sort_alt_states (alt_states_list)
+ alt_state_t alt_states_list;
+{
+ alt_state_t curr_alt_state;
+ vla_ptr_t alt_states;
+ size_t i;
+ size_t prev_unique_state_ind;
+ alt_state_t result;
+ alt_state_t *result_ptr;
+
+ VLA_PTR_CREATE (alt_states, 150, "alt_states");
+ for (curr_alt_state = alt_states_list;
+ curr_alt_state != NULL;
+ curr_alt_state = curr_alt_state->next_alt_state)
+ VLA_PTR_ADD (alt_states, curr_alt_state);
+ qsort (VLA_PTR_BEGIN (alt_states), VLA_PTR_LENGTH (alt_states),
+ sizeof (alt_state_t), alt_state_cmp);
+ if (VLA_PTR_LENGTH (alt_states) == 0)
+ result = NULL;
+ else
+ {
+ result_ptr = VLA_PTR_BEGIN (alt_states);
+ prev_unique_state_ind = 0;
+ for (i = 1; i < VLA_PTR_LENGTH (alt_states); i++)
+ if (result_ptr [prev_unique_state_ind]->state != result_ptr [i]->state)
+ {
+ prev_unique_state_ind++;
+ result_ptr [prev_unique_state_ind] = result_ptr [i];
+ }
+#if 0
+ for (i = prev_unique_state_ind + 1; i < VLA_PTR_LENGTH (alt_states); i++)
+ free_alt_state (result_ptr [i]);
+#endif
+ VLA_PTR_SHORTEN (alt_states, i - prev_unique_state_ind - 1);
+ result_ptr = VLA_PTR_BEGIN (alt_states);
+ for (i = 1; i < VLA_PTR_LENGTH (alt_states); i++)
+ result_ptr [i - 1]->next_sorted_alt_state = result_ptr [i];
+ result_ptr [i - 1]->next_sorted_alt_state = NULL;
+ result = *result_ptr;
+ }
+ VLA_PTR_DELETE (alt_states);
+ return result;
+}
+
+/* The function checks equality of alt state lists. Remember that the
+ lists must be already sorted by the previous function. */
+static int
+alt_states_eq (alt_states_1, alt_states_2)
+ alt_state_t alt_states_1;
+ alt_state_t alt_states_2;
+{
+ while (alt_states_1 != NULL && alt_states_2 != NULL
+ && alt_state_cmp (&alt_states_1, &alt_states_2) == 0)
+ {
+ alt_states_1 = alt_states_1->next_sorted_alt_state;
+ alt_states_2 = alt_states_2->next_sorted_alt_state;
+ }
+ return alt_states_1 == alt_states_2;
+}
+
+/* Initialization of the abstract data. */
+static void
+initiate_alt_states ()
+{
+ first_free_alt_state = NULL;
+}
+
+/* Finishing work with the abstract data. */
+static void
+finish_alt_states ()
+{
+}
+
+\f
+
+/* The page contains macros for work with bits strings. We could use
+ standard gcc bitmap or sbitmap but it would result in difficulties
+ of building canadian cross. */
+
+/* Set bit number bitno in the bit string. The macro is not side
+ effect proof. */
+#define SET_BIT(bitstring, bitno) \
+ (((char *) (bitstring)) [(bitno) / CHAR_BIT] |= 1 << (bitno) % CHAR_BIT)
+
+/* Test if bit number bitno in the bitstring is set. The macro is not
+ side effect proof. */
+#define TEST_BIT(bitstring, bitno) \
+ (((char *) (bitstring)) [(bitno) / CHAR_BIT] >> (bitno) % CHAR_BIT & 1)
+
+\f
+
+/* This page contains abstract data `state'. */
+
+/* Maximal length of reservations in cycles (> 1). */
+static int max_cycles_num;
+
+/* Number of set elements (see type set_el_t) needed for
+ representation of one cycle reservation. It is depended on units
+ number. */
+static int els_in_cycle_reserv;
+
+/* Number of set elements (see type set_el_t) needed for
+ representation of maximal length reservation. Deterministic
+ reservation is stored as set (bit string) of length equal to the
+ variable value * number of bits in set_el_t. */
+static int els_in_reservs;
+
+/* VLA for representation of array of pointers to unit
+ declarations. */
+static vla_ptr_t units_container;
+
+/* The start address of the array. */
+static struct unit_decl **units_array;
+
+/* Empty reservation of maximal length. */
+static reserv_sets_t empty_reserv;
+
+/* The state table itself is represented by the following variable. */
+static htab_t state_table;
+
+/* VLA for representation of array of pointers to free nodes
+ `state'. */
+static vla_ptr_t free_states;
+
+static int curr_unique_state_num;
+
+#ifndef NDEBUG
+/* The following variables is maximal number of allocated nodes
+ `state'. */
+static int allocated_states_num = 0;
+#endif
+
+/* Allocate new reservation set. */
+static reserv_sets_t
+alloc_empty_reserv_sets ()
+{
+ reserv_sets_t result;
+
+ obstack_blank (&irp, els_in_reservs * sizeof (set_el_t));
+ result = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ memset (result, 0, els_in_reservs * sizeof (set_el_t));
+ return result;
+}
+
+/* Hash value of reservation set. */
+static unsigned
+reserv_sets_hash_value (reservs)
+ reserv_sets_t reservs;
+{
+ unsigned int hash_value;
+ int reservs_num;
+ set_el_t *reserv_ptr;
+
+ hash_value = 0;
+ reservs_num = els_in_reservs;
+ reserv_ptr = reservs;
+ while (reservs_num != 0)
+ {
+ reservs_num--;
+ hash_value = ((hash_value >> (sizeof (unsigned) - 1) * CHAR_BIT)
+ | (hash_value << CHAR_BIT)) + *reserv_ptr;
+ reserv_ptr++;
+ }
+ return hash_value;
+}
+
+/* Comparison of given reservation sets. */
+static int
+reserv_sets_cmp (reservs_1, reservs_2)
+ reserv_sets_t reservs_1;
+ reserv_sets_t reservs_2;
+{
+ int reservs_num;
+ set_el_t *reserv_ptr_1;
+ set_el_t *reserv_ptr_2;
+
+ if (reservs_1 == NULL || reservs_2 == NULL)
+ abort ();
+ reservs_num = els_in_reservs;
+ reserv_ptr_1 = reservs_1;
+ reserv_ptr_2 = reservs_2;
+ while (reservs_num != 0 && *reserv_ptr_1 == *reserv_ptr_2)
+ {
+ reservs_num--;
+ reserv_ptr_1++;
+ reserv_ptr_2++;
+ }
+ if (reservs_num == 0)
+ return 0;
+ else if (*reserv_ptr_1 < *reserv_ptr_2)
+ return -1;
+ else
+ return 1;
+}
+
+/* The function checks equality of the reservation sets. */
+static int
+reserv_sets_eq (reservs_1, reservs_2)
+ reserv_sets_t reservs_1;
+ reserv_sets_t reservs_2;
+{
+ return reserv_sets_cmp (reservs_1, reservs_2) == 0;
+}
+
+/* Set up in the reservation set that unit with UNIT_NUM is used on
+ CYCLE_NUM. */
+static void
+set_unit_reserv (reservs, cycle_num, unit_num)
+ reserv_sets_t reservs;
+ int cycle_num;
+ int unit_num;
+{
+ if (cycle_num >= max_cycles_num)
+ abort ();
+ SET_BIT (reservs, cycle_num * els_in_cycle_reserv
+ * sizeof (set_el_t) * CHAR_BIT + unit_num);
+}
+
+/* Set up in the reservation set RESERVS that unit with UNIT_NUM is
+ used on CYCLE_NUM. */
+static int
+test_unit_reserv (reservs, cycle_num, unit_num)
+ reserv_sets_t reservs;
+ int cycle_num;
+ int unit_num;
+{
+ if (cycle_num >= max_cycles_num)
+ abort ();
+ return TEST_BIT (reservs, cycle_num * els_in_cycle_reserv
+ * sizeof (set_el_t) * CHAR_BIT + unit_num);
+}
+
+/* The function checks that the reservation set represents no one unit
+ reservation. */
+static int
+it_is_empty_reserv_sets (operand)
+ reserv_sets_t operand;
+{
+ set_el_t *reserv_ptr;
+ int reservs_num;
+
+ if (operand == NULL)
+ abort ();
+ for (reservs_num = els_in_reservs, reserv_ptr = operand;
+ reservs_num != 0;
+ reserv_ptr++, reservs_num--)
+ if (*reserv_ptr != 0)
+ return 0;
+ return 1;
+}
+
+/* The function checks that the reservation sets are intersected,
+ i.e. there is a unit reservation on a cycle in both reservation
+ sets. */
+static int
+reserv_sets_are_intersected (operand_1, operand_2)
+ reserv_sets_t operand_1;
+ reserv_sets_t operand_2;
+{
+ set_el_t *el_ptr_1;
+ set_el_t *el_ptr_2;
+ set_el_t *cycle_ptr_1;
+ set_el_t *cycle_ptr_2;
+ int nonzero_p;
+
+ if (operand_1 == NULL || operand_2 == NULL)
+ abort ();
+ for (el_ptr_1 = operand_1, el_ptr_2 = operand_2;
+ el_ptr_1 < operand_1 + els_in_reservs;
+ el_ptr_1++, el_ptr_2++)
+ if (*el_ptr_1 & *el_ptr_2)
+ return 1;
+ for (cycle_ptr_1 = operand_1, cycle_ptr_2 = operand_2;
+ cycle_ptr_1 < operand_1 + els_in_reservs;
+ cycle_ptr_1 += els_in_cycle_reserv, cycle_ptr_2 += els_in_cycle_reserv)
+ {
+ for (el_ptr_1 = cycle_ptr_1, el_ptr_2 = get_excl_set (cycle_ptr_2);
+ el_ptr_1 < cycle_ptr_1 + els_in_cycle_reserv;
+ el_ptr_1++, el_ptr_2++)
+ if (*el_ptr_1 & *el_ptr_2)
+ return 1;
+ nonzero_p = 0;
+ for (el_ptr_1 = cycle_ptr_1,
+ el_ptr_2 = get_presence_absence_set (cycle_ptr_2, 1);
+ el_ptr_1 < cycle_ptr_1 + els_in_cycle_reserv;
+ el_ptr_1++, el_ptr_2++)
+ if (*el_ptr_1 & *el_ptr_2)
+ break;
+ else if (*el_ptr_2 != 0)
+ nonzero_p = 1;
+ if (nonzero_p && el_ptr_1 >= cycle_ptr_1 + els_in_cycle_reserv)
+ return 1;
+ for (el_ptr_1 = cycle_ptr_1,
+ el_ptr_2 = get_presence_absence_set (cycle_ptr_2, 0);
+ el_ptr_1 < cycle_ptr_1 + els_in_cycle_reserv;
+ el_ptr_1++, el_ptr_2++)
+ /* It looks like code for exclusion but exclusion set is
+ made as symmetric relation preliminary. */
+ if (*el_ptr_1 & *el_ptr_2)
+ return 1;
+ }
+ return 0;
+}
+
+/* The function sets up RESULT bits by bits of OPERAND shifted on one
+ cpu cycle. The remaining bits of OPERAND (representing the last
+ cycle unit reservations) are not chenged. */
+static void
+reserv_sets_shift (result, operand)
+ reserv_sets_t result;
+ reserv_sets_t operand;
+{
+ int i;
+
+ if (result == NULL || operand == NULL || result == operand)
+ abort ();
+ for (i = els_in_cycle_reserv; i < els_in_reservs; i++)
+ result [i - els_in_cycle_reserv] = operand [i];
+}
+
+/* OR of the reservation sets. */
+static void
+reserv_sets_or (result, operand_1, operand_2)
+ reserv_sets_t result;
+ reserv_sets_t operand_1;
+ reserv_sets_t operand_2;
+{
+ set_el_t *el_ptr_1;
+ set_el_t *el_ptr_2;
+ set_el_t *result_set_el_ptr;
+
+ if (result == NULL || operand_1 == NULL || operand_2 == NULL)
+ abort ();
+ for (el_ptr_1 = operand_1, el_ptr_2 = operand_2, result_set_el_ptr = result;
+ el_ptr_1 < operand_1 + els_in_reservs;
+ el_ptr_1++, el_ptr_2++, result_set_el_ptr++)
+ *result_set_el_ptr = *el_ptr_1 | *el_ptr_2;
+}
+
+/* AND of the reservation sets. */
+static void
+reserv_sets_and (result, operand_1, operand_2)
+ reserv_sets_t result;
+ reserv_sets_t operand_1;
+ reserv_sets_t operand_2;
+{
+ set_el_t *el_ptr_1;
+ set_el_t *el_ptr_2;
+ set_el_t *result_set_el_ptr;
+
+ if (result == NULL || operand_1 == NULL || operand_2 == NULL)
+ abort ();
+ for (el_ptr_1 = operand_1, el_ptr_2 = operand_2, result_set_el_ptr = result;
+ el_ptr_1 < operand_1 + els_in_reservs;
+ el_ptr_1++, el_ptr_2++, result_set_el_ptr++)
+ *result_set_el_ptr = *el_ptr_1 & *el_ptr_2;
+}
+
+/* The function outputs string representation of units reservation on
+ cycle START_CYCLE in the reservation set. The function uses repeat
+ construction if REPETITION_NUM > 1. */
+static void
+output_cycle_reservs (f, reservs, start_cycle, repetition_num)
+ FILE *f;
+ reserv_sets_t reservs;
+ int start_cycle;
+ int repetition_num;
+{
+ int unit_num;
+ int reserved_units_num;
+
+ reserved_units_num = 0;
+ for (unit_num = 0; unit_num < description->units_num; unit_num++)
+ if (TEST_BIT (reservs, start_cycle * els_in_cycle_reserv
+ * sizeof (set_el_t) * CHAR_BIT + unit_num))
+ reserved_units_num++;
+ if (repetition_num <= 0)
+ abort ();
+ if (repetition_num != 1 && reserved_units_num > 1)
+ fprintf (f, "(");
+ reserved_units_num = 0;
+ for (unit_num = 0;
+ unit_num < description->units_num;
+ unit_num++)
+ if (TEST_BIT (reservs, start_cycle * els_in_cycle_reserv
+ * sizeof (set_el_t) * CHAR_BIT + unit_num))
+ {
+ if (reserved_units_num != 0)
+ fprintf (f, "+");
+ reserved_units_num++;
+ fprintf (f, "%s", units_array [unit_num]->name);
+ }
+ if (reserved_units_num == 0)
+ fprintf (f, NOTHING_NAME);
+ if (repetition_num <= 0)
+ abort ();
+ if (reserved_units_num != 0 && repetition_num != 1)
+ {
+ if (reserved_units_num > 1)
+ fprintf (f, ")");
+ fprintf (f, "*%d", repetition_num);
+ }
+}
+
+/* The function outputs string representation of units reservation in
+ the reservation set. */
+static void
+output_reserv_sets (f, reservs)
+ FILE *f;
+ reserv_sets_t reservs;
+{
+ int start_cycle = 0;
+ int cycle;
+ int repetition_num;
+
+ repetition_num = 0;
+ for (cycle = 0; cycle < max_cycles_num; cycle++)
+ if (repetition_num == 0)
+ {
+ repetition_num++;
+ start_cycle = cycle;
+ }
+ else if (memcmp
+ ((char *) reservs + start_cycle * els_in_cycle_reserv
+ * sizeof (set_el_t),
+ (char *) reservs + cycle * els_in_cycle_reserv
+ * sizeof (set_el_t),
+ els_in_cycle_reserv * sizeof (set_el_t)) == 0)
+ repetition_num++;
+ else
+ {
+ if (start_cycle != 0)
+ fprintf (f, ", ");
+ output_cycle_reservs (f, reservs, start_cycle, repetition_num);
+ repetition_num = 1;
+ start_cycle = cycle;
+ }
+ if (start_cycle < max_cycles_num)
+ {
+ if (start_cycle != 0)
+ fprintf (f, ", ");
+ output_cycle_reservs (f, reservs, start_cycle, repetition_num);
+ }
+}
+
+/* The following function returns free node state for AUTOMATON. It
+ may be new allocated node or node freed eralier. The function also
+ allocates reservation set if WITH_RESERVS has nonzero value. */
+static state_t
+get_free_state (with_reservs, automaton)
+ int with_reservs;
+ automaton_t automaton;
+{
+ state_t result;
+
+ if (max_cycles_num <= 0 || automaton == NULL)
+ abort ();
+ if (VLA_PTR_LENGTH (free_states) != 0)
+ {
+ result = VLA_PTR (free_states, VLA_PTR_LENGTH (free_states) - 1);
+ VLA_PTR_SHORTEN (free_states, 1);
+ result->automaton = automaton;
+ result->first_out_arc = NULL;
+ result->it_was_placed_in_stack_for_NDFA_forming = 0;
+ result->it_was_placed_in_stack_for_DFA_forming = 0;
+ result->component_states = NULL;
+ result->longest_path_length = UNDEFINED_LONGEST_PATH_LENGTH;
+ }
+ else
+ {
+#ifndef NDEBUG
+ allocated_states_num++;
+#endif
+ result = create_node (sizeof (struct state));
+ result->automaton = automaton;
+ result->first_out_arc = NULL;
+ result->unique_num = curr_unique_state_num;
+ result->longest_path_length = UNDEFINED_LONGEST_PATH_LENGTH;
+ curr_unique_state_num++;
+ }
+ if (with_reservs)
+ {
+ if (result->reservs == NULL)
+ result->reservs = alloc_empty_reserv_sets ();
+ else
+ memset (result->reservs, 0, els_in_reservs * sizeof (set_el_t));
+ }
+ return result;
+}
+
+/* The function frees node STATE. */
+static void
+free_state (state)
+ state_t state;
+{
+ free_alt_states (state->component_states);
+ VLA_PTR_ADD (free_states, state);
+}
+
+/* Hash value of STATE. If STATE represents deterministic state it is
+ simply hash value of the corresponding reservation set. Otherwise
+ it is formed from hash values of the component deterministic
+ states. One more key is order number of state automaton. */
+static unsigned
+state_hash (state)
+ const void *state;
+{
+ unsigned int hash_value;
+ alt_state_t alt_state;
+
+ if (((state_t) state)->component_states == NULL)
+ hash_value = reserv_sets_hash_value (((state_t) state)->reservs);
+ else
+ {
+ hash_value = 0;
+ for (alt_state = ((state_t) state)->component_states;
+ alt_state != NULL;
+ alt_state = alt_state->next_sorted_alt_state)
+ hash_value = (((hash_value >> (sizeof (unsigned) - 1) * CHAR_BIT)
+ | (hash_value << CHAR_BIT))
+ + alt_state->state->unique_num);
+ }
+ hash_value = (((hash_value >> (sizeof (unsigned) - 1) * CHAR_BIT)
+ | (hash_value << CHAR_BIT))
+ + ((state_t) state)->automaton->automaton_order_num);
+ return hash_value;
+}
+
+/* Return nonzero value if the states are the same. */
+static int
+state_eq_p (state_1, state_2)
+ const void *state_1;
+ const void *state_2;
+{
+ alt_state_t alt_state_1;
+ alt_state_t alt_state_2;
+
+ if (((state_t) state_1)->automaton != ((state_t) state_2)->automaton)
+ return 0;
+ else if (((state_t) state_1)->component_states == NULL
+ && ((state_t) state_2)->component_states == NULL)
+ return reserv_sets_eq (((state_t) state_1)->reservs,
+ ((state_t) state_2)->reservs);
+ else if (((state_t) state_1)->component_states != NULL
+ && ((state_t) state_2)->component_states != NULL)
+ {
+ for (alt_state_1 = ((state_t) state_1)->component_states,
+ alt_state_2 = ((state_t) state_2)->component_states;
+ alt_state_1 != NULL && alt_state_2 != NULL;
+ alt_state_1 = alt_state_1->next_sorted_alt_state,
+ alt_state_2 = alt_state_2->next_sorted_alt_state)
+ /* All state in the list must be already in the hash table.
+ Also the lists must be sorted. */
+ if (alt_state_1->state != alt_state_2->state)
+ return 0;
+ return alt_state_1 == alt_state_2;
+ }
+ else
+ return 0;
+}
+
+/* Insert STATE into the state table. */
+static state_t
+insert_state (state)
+ state_t state;
+{
+ void **entry_ptr;
+
+ entry_ptr = htab_find_slot (state_table, (void *) state, 1);
+ if (*entry_ptr == NULL)
+ *entry_ptr = (void *) state;
+ return (state_t) *entry_ptr;
+}
+
+/* Add reservation of unit with UNIT_NUM on cycle CYCLE_NUM to
+ deterministic STATE. */
+static void
+set_state_reserv (state, cycle_num, unit_num)
+ state_t state;
+ int cycle_num;
+ int unit_num;
+{
+ set_unit_reserv (state->reservs, cycle_num, unit_num);
+}
+
+/* Return nonzero value if the deterministic states contains a
+ reservation of the same cpu unit on the same cpu cycle. */
+static int
+intersected_state_reservs_p (state1, state2)
+ state_t state1;
+ state_t state2;
+{
+ if (state1->automaton != state2->automaton)
+ abort ();
+ return reserv_sets_are_intersected (state1->reservs, state2->reservs);
+}
+
+/* Return deterministic state (inserted into the table) which
+ representing the automaton state whic is union of reservations of
+ deterministic states. */
+static state_t
+states_union (state1, state2)
+ state_t state1;
+ state_t state2;
+{
+ state_t result;
+ state_t state_in_table;
+
+ if (state1->automaton != state2->automaton)
+ abort ();
+ result = get_free_state (1, state1->automaton);
+ reserv_sets_or (result->reservs, state1->reservs, state2->reservs);
+ state_in_table = insert_state (result);
+ if (result != state_in_table)
+ {
+ free_state (result);
+ result = state_in_table;
+ }
+ return result;
+}
+
+/* Return deterministic state (inserted into the table) which
+ represent the automaton state is obtained from deterministic STATE
+ by advancing cpu cycle. */
+static state_t
+state_shift (state)
+ state_t state;
+{
+ state_t result;
+ state_t state_in_table;
+
+ result = get_free_state (1, state->automaton);
+ reserv_sets_shift (result->reservs, state->reservs);
+ state_in_table = insert_state (result);
+ if (result != state_in_table)
+ {
+ free_state (result);
+ result = state_in_table;
+ }
+ return result;
+}
+
+/* Initialization of the abstract data. */
+static void
+initiate_states ()
+{
+ decl_t decl;
+ int i;
+
+ VLA_PTR_CREATE (units_container, description->units_num, "units_container");
+ units_array
+ = (description->decls_num ? VLA_PTR_BEGIN (units_container) : NULL);
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ units_array [decl->decl.unit.unit_num] = &decl->decl.unit;
+ }
+ max_cycles_num = description->max_insn_reserv_cycles;
+ if (max_cycles_num == 0)
+ max_cycles_num++;
+ els_in_cycle_reserv
+ = ((description->units_num + sizeof (set_el_t) * CHAR_BIT - 1)
+ / (sizeof (set_el_t) * CHAR_BIT));
+ els_in_reservs = els_in_cycle_reserv * max_cycles_num;
+ curr_unique_state_num = 0;
+ initiate_alt_states ();
+ VLA_PTR_CREATE (free_states, 1500, "free states");
+ state_table = htab_create (1500, state_hash, state_eq_p, (htab_del) 0);
+ empty_reserv = alloc_empty_reserv_sets ();
+}
+
+/* Finisging work with the abstract data. */
+static void
+finish_states ()
+{
+ VLA_PTR_DELETE (units_container);
+ htab_delete (state_table);
+ VLA_PTR_DELETE (free_states);
+ finish_alt_states ();
+}
+
+\f
+
+/* Abstract data `arcs'. */
+
+/* List of free arcs. */
+static arc_t first_free_arc;
+
+#ifndef NDEBUG
+/* The following variables is maximal number of allocated nodes
+ `arc'. */
+static int allocated_arcs_num = 0;
+#endif
+
+/* The function frees node ARC. */
+static void
+free_arc (arc)
+ arc_t arc;
+{
+ arc->next_out_arc = first_free_arc;
+ first_free_arc = arc;
+}
+
+/* The function removes and frees ARC staring from FROM_STATE. */
+static void
+remove_arc (from_state, arc)
+ state_t from_state;
+ arc_t arc;
+{
+ arc_t prev_arc;
+ arc_t curr_arc;
+
+ if (arc == NULL)
+ abort ();
+ for (prev_arc = NULL, curr_arc = from_state->first_out_arc;
+ curr_arc != NULL;
+ prev_arc = curr_arc, curr_arc = curr_arc->next_out_arc)
+ if (curr_arc == arc)
+ break;
+ if (curr_arc == NULL)
+ abort ();
+ if (prev_arc == NULL)
+ from_state->first_out_arc = arc->next_out_arc;
+ else
+ prev_arc->next_out_arc = arc->next_out_arc;
+ free_arc (arc);
+}
+
+/* The functions returns arc with given characteristics (or NULL if
+ the arc does not exist). */
+static arc_t
+find_arc (from_state, to_state, insn)
+ state_t from_state;
+ state_t to_state;
+ ainsn_t insn;
+{
+ arc_t arc;
+
+ for (arc = first_out_arc (from_state); arc != NULL; arc = next_out_arc (arc))
+ if (arc->to_state == to_state && arc->insn == insn)
+ return arc;
+ return NULL;
+}
+
+/* The function adds arc from FROM_STATE to TO_STATE marked by AINSN
+ and with given STATE_ALTS. The function returns added arc (or
+ already existing arc). */
+static arc_t
+add_arc (from_state, to_state, ainsn, state_alts)
+ state_t from_state;
+ state_t to_state;
+ ainsn_t ainsn;
+ int state_alts;
+{
+ arc_t new_arc;
+
+ new_arc = find_arc (from_state, to_state, ainsn);
+ if (new_arc != NULL)
+ return new_arc;
+ if (first_free_arc == NULL)
+ {
+#ifndef NDEBUG
+ allocated_arcs_num++;
+#endif
+ new_arc = create_node (sizeof (struct arc));
+ new_arc->to_state = NULL;
+ new_arc->insn = NULL;
+ new_arc->next_out_arc = NULL;
+ }
+ else
+ {
+ new_arc = first_free_arc;
+ first_free_arc = first_free_arc->next_out_arc;
+ }
+ new_arc->to_state = to_state;
+ new_arc->insn = ainsn;
+ ainsn->arc_exists_p = 1;
+ new_arc->next_out_arc = from_state->first_out_arc;
+ from_state->first_out_arc = new_arc;
+ new_arc->next_arc_marked_by_insn = NULL;
+ new_arc->state_alts = state_alts;
+ return new_arc;
+}
+
+/* The function returns the first arc starting from STATE. */
+static arc_t
+first_out_arc (state)
+ state_t state;
+{
+ return state->first_out_arc;
+}
+
+/* The function returns next out arc after ARC. */
+static arc_t
+next_out_arc (arc)
+ arc_t arc;
+{
+ return arc->next_out_arc;
+}
+
+/* Initialization of the abstract data. */
+static void
+initiate_arcs ()
+{
+ first_free_arc = NULL;
+}
+
+/* Finishing work with the abstract data. */
+static void
+finish_arcs ()
+{
+}
+
+\f
+
+/* Abstract data `automata lists'. */
+
+/* List of free states. */
+static automata_list_el_t first_free_automata_list_el;
+
+/* The list being formed. */
+static automata_list_el_t current_automata_list;
+
+/* Hash table of automata lists. */
+static htab_t automata_list_table;
+
+/* The following function returns free automata list el. It may be
+ new allocated node or node freed earlier. */
+static automata_list_el_t
+get_free_automata_list_el ()
+{
+ automata_list_el_t result;
+
+ if (first_free_automata_list_el != NULL)
+ {
+ result = first_free_automata_list_el;
+ first_free_automata_list_el
+ = first_free_automata_list_el->next_automata_list_el;
+ }
+ else
+ result = create_node (sizeof (struct automata_list_el));
+ result->automaton = NULL;
+ result->next_automata_list_el = NULL;
+ return result;
+}
+
+/* The function frees node AUTOMATA_LIST_EL. */
+static void
+free_automata_list_el (automata_list_el)
+ automata_list_el_t automata_list_el;
+{
+ if (automata_list_el == NULL)
+ return;
+ automata_list_el->next_automata_list_el = first_free_automata_list_el;
+ first_free_automata_list_el = automata_list_el;
+}
+
+/* The function frees list AUTOMATA_LIST. */
+static void
+free_automata_list (automata_list)
+ automata_list_el_t automata_list;
+{
+ automata_list_el_t curr_automata_list_el;
+ automata_list_el_t next_automata_list_el;
+
+ for (curr_automata_list_el = automata_list;
+ curr_automata_list_el != NULL;
+ curr_automata_list_el = next_automata_list_el)
+ {
+ next_automata_list_el = curr_automata_list_el->next_automata_list_el;
+ free_automata_list_el (curr_automata_list_el);
+ }
+}
+
+/* Hash value of AUTOMATA_LIST. */
+static unsigned
+automata_list_hash (automata_list)
+ const void *automata_list;
+{
+ unsigned int hash_value;
+ automata_list_el_t curr_automata_list_el;
+
+ hash_value = 0;
+ for (curr_automata_list_el = (automata_list_el_t) automata_list;
+ curr_automata_list_el != NULL;
+ curr_automata_list_el = curr_automata_list_el->next_automata_list_el)
+ hash_value = (((hash_value >> (sizeof (unsigned) - 1) * CHAR_BIT)
+ | (hash_value << CHAR_BIT))
+ + curr_automata_list_el->automaton->automaton_order_num);
+ return hash_value;
+}
+
+/* Return nonzero value if the automata_lists are the same. */
+static int
+automata_list_eq_p (automata_list_1, automata_list_2)
+ const void *automata_list_1;
+ const void *automata_list_2;
+{
+ automata_list_el_t automata_list_el_1;
+ automata_list_el_t automata_list_el_2;
+
+ for (automata_list_el_1 = (automata_list_el_t) automata_list_1,
+ automata_list_el_2 = (automata_list_el_t) automata_list_2;
+ automata_list_el_1 != NULL && automata_list_el_2 != NULL;
+ automata_list_el_1 = automata_list_el_1->next_automata_list_el,
+ automata_list_el_2 = automata_list_el_2->next_automata_list_el)
+ if (automata_list_el_1->automaton != automata_list_el_2->automaton)
+ return 0;
+ return automata_list_el_1 == automata_list_el_2;
+}
+
+/* Initialization of the abstract data. */
+static void
+initiate_automata_lists ()
+{
+ first_free_automata_list_el = NULL;
+ automata_list_table = htab_create (1500, automata_list_hash,
+ automata_list_eq_p, (htab_del) 0);
+}
+
+/* The following function starts new automata list and makes it the
+ current one. */
+static void
+automata_list_start ()
+{
+ current_automata_list = NULL;
+}
+
+/* The following function adds AUTOMATON to the current list. */
+static void
+automata_list_add (automaton)
+ automaton_t automaton;
+{
+ automata_list_el_t el;
+
+ el = get_free_automata_list_el ();
+ el->automaton = automaton;
+ el->next_automata_list_el = current_automata_list;
+ current_automata_list = el;
+}
+
+/* The following function finishes forming the current list, inserts
+ it into the table and returns it. */
+static automata_list_el_t
+automata_list_finish ()
+{
+ void **entry_ptr;
+
+ if (current_automata_list == NULL)
+ return NULL;
+ entry_ptr = htab_find_slot (automata_list_table,
+ (void *) current_automata_list, 1);
+ if (*entry_ptr == NULL)
+ *entry_ptr = (void *) current_automata_list;
+ else
+ free_automata_list (current_automata_list);
+ current_automata_list = NULL;
+ return (automata_list_el_t) *entry_ptr;
+}
+
+/* Finishing work with the abstract data. */
+static void
+finish_automata_lists ()
+{
+ htab_delete (automata_list_table);
+}
+
+\f
+
+/* The page contains abstract data for work with exclusion sets (see
+ exclusion_set in file rtl.def). */
+
+/* The following variable refers to an exclusion set returned by
+ get_excl_set. This is bit string of length equal to cpu units
+ number. If exclusion set for given unit contains 1 for a unit,
+ then simultaneous reservation of the units is prohibited. */
+static reserv_sets_t excl_set;
+
+/* The array contains exclusion sets for each unit. */
+static reserv_sets_t *unit_excl_set_table;
+
+/* The following function forms the array containing exclusion sets
+ for each unit. */
+static void
+initiate_excl_sets ()
+{
+ decl_t decl;
+ reserv_sets_t unit_excl_set;
+ unit_set_el_t el;
+ int i;
+
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ excl_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ obstack_blank (&irp, description->units_num * sizeof (reserv_sets_t));
+ unit_excl_set_table = (reserv_sets_t *) obstack_base (&irp);
+ obstack_finish (&irp);
+ /* Evaluate unit exclusion sets. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ {
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ unit_excl_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ memset (unit_excl_set, 0, els_in_cycle_reserv * sizeof (set_el_t));
+ for (el = decl->decl.unit.excl_list;
+ el != NULL;
+ el = el->next_unit_set_el)
+ SET_BIT (unit_excl_set, el->unit_decl->unit_num);
+ unit_excl_set_table [decl->decl.unit.unit_num] = unit_excl_set;
+ }
+ }
+}
+
+/* The function sets up and return EXCL_SET which is union of
+ exclusion sets for each unit in IN_SET. */
+static reserv_sets_t
+get_excl_set (in_set)
+ reserv_sets_t in_set;
+{
+ int excl_char_num;
+ int chars_num;
+ int i;
+ int start_unit_num;
+ int unit_num;
+
+ chars_num = els_in_cycle_reserv * sizeof (set_el_t);
+ memset (excl_set, 0, chars_num);
+ for (excl_char_num = 0; excl_char_num < chars_num; excl_char_num++)
+ if (((unsigned char *) in_set) [excl_char_num])
+ for (i = CHAR_BIT - 1; i >= 0; i--)
+ if ((((unsigned char *) in_set) [excl_char_num] >> i) & 1)
+ {
+ start_unit_num = excl_char_num * CHAR_BIT + i;
+ if (start_unit_num >= description->units_num)
+ return excl_set;
+ for (unit_num = 0; unit_num < els_in_cycle_reserv; unit_num++)
+ {
+ excl_set [unit_num]
+ |= unit_excl_set_table [start_unit_num] [unit_num];
+ }
+ }
+ return excl_set;
+}
+
+\f
+
+/* The page contains abstract data for work with presence/absence sets
+ (see presence_set/absence_set in file rtl.def). */
+
+/* The following variables refer to correspondingly an presence and an
+ absence set returned by get_presence_absence_set. This is bit
+ string of length equal to cpu units number. */
+static reserv_sets_t presence_set, absence_set;
+
+/* The following arrays contain correspondingly presence and absence
+ sets for each unit. */
+static reserv_sets_t *unit_presence_set_table, *unit_absence_set_table;
+
+/* The following function forms the array containing presence and
+ absence sets for each unit */
+static void
+initiate_presence_absence_sets ()
+{
+ decl_t decl;
+ reserv_sets_t unit_set;
+ unit_set_el_t el;
+ int i;
+
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ presence_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ obstack_blank (&irp, description->units_num * sizeof (reserv_sets_t));
+ unit_presence_set_table = (reserv_sets_t *) obstack_base (&irp);
+ obstack_finish (&irp);
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ absence_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ obstack_blank (&irp, description->units_num * sizeof (reserv_sets_t));
+ unit_absence_set_table = (reserv_sets_t *) obstack_base (&irp);
+ obstack_finish (&irp);
+ /* Evaluate unit presence/absence sets. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ {
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ unit_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ memset (unit_set, 0, els_in_cycle_reserv * sizeof (set_el_t));
+ for (el = decl->decl.unit.presence_list;
+ el != NULL;
+ el = el->next_unit_set_el)
+ SET_BIT (unit_set, el->unit_decl->unit_num);
+ unit_presence_set_table [decl->decl.unit.unit_num] = unit_set;
+
+ obstack_blank (&irp, els_in_cycle_reserv * sizeof (set_el_t));
+ unit_set = (reserv_sets_t) obstack_base (&irp);
+ obstack_finish (&irp);
+ memset (unit_set, 0, els_in_cycle_reserv * sizeof (set_el_t));
+ for (el = decl->decl.unit.absence_list;
+ el != NULL;
+ el = el->next_unit_set_el)
+ SET_BIT (unit_set, el->unit_decl->unit_num);
+ unit_absence_set_table [decl->decl.unit.unit_num] = unit_set;
+ }
+ }
+}
+
+/* The function sets up and return PRESENCE_SET (if PRESENCE_P) or
+ ABSENCE_SET which is union of corresponding sets for each unit in
+ IN_SET. */
+static reserv_sets_t
+get_presence_absence_set (in_set, presence_p)
+ reserv_sets_t in_set;
+ int presence_p;
+{
+ int char_num;
+ int chars_num;
+ int i;
+ int start_unit_num;
+ int unit_num;
+
+ chars_num = els_in_cycle_reserv * sizeof (set_el_t);
+ if (presence_p)
+ memset (presence_set, 0, chars_num);
+ else
+ memset (absence_set, 0, chars_num);
+ for (char_num = 0; char_num < chars_num; char_num++)
+ if (((unsigned char *) in_set) [char_num])
+ for (i = CHAR_BIT - 1; i >= 0; i--)
+ if ((((unsigned char *) in_set) [char_num] >> i) & 1)
+ {
+ start_unit_num = char_num * CHAR_BIT + i;
+ if (start_unit_num >= description->units_num)
+ return (presence_p ? presence_set : absence_set);
+ for (unit_num = 0; unit_num < els_in_cycle_reserv; unit_num++)
+ if (presence_p)
+ presence_set [unit_num]
+ |= unit_presence_set_table [start_unit_num] [unit_num];
+ else
+ absence_set [unit_num]
+ |= unit_absence_set_table [start_unit_num] [unit_num];
+ }
+ return (presence_p ? presence_set : absence_set);
+}
+
+\f
+
+/* This page contains code for transformation of original reservations
+ described in .md file. The main goal of transformations is
+ simplifying reservation and lifting up all `|' on the top of IR
+ reservation representation. */
+
+
+/* The following function makes copy of IR representation of
+ reservation. The function also substitutes all reservations
+ defined by define_reservation by corresponding value during making
+ the copy. */
+static regexp_t
+copy_insn_regexp (regexp)
+ regexp_t regexp;
+{
+ regexp_t result;
+ int i;
+
+ if (regexp->mode == rm_reserv)
+ result = copy_insn_regexp (regexp->regexp.reserv.reserv_decl->regexp);
+ else if (regexp->mode == rm_unit)
+ result = copy_node (regexp, sizeof (struct regexp));
+ else if (regexp->mode == rm_repeat)
+ {
+ result = copy_node (regexp, sizeof (struct regexp));
+ result->regexp.repeat.regexp
+ = copy_insn_regexp (regexp->regexp.repeat.regexp);
+ }
+ else if (regexp->mode == rm_sequence)
+ {
+ result = copy_node (regexp,
+ sizeof (struct regexp) + sizeof (regexp_t)
+ * (regexp->regexp.sequence.regexps_num - 1));
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ result->regexp.sequence.regexps [i]
+ = copy_insn_regexp (regexp->regexp.sequence.regexps [i]);
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ result = copy_node (regexp,
+ sizeof (struct regexp) + sizeof (regexp_t)
+ * (regexp->regexp.allof.regexps_num - 1));
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ result->regexp.allof.regexps [i]
+ = copy_insn_regexp (regexp->regexp.allof.regexps [i]);
+ }
+ else if (regexp->mode == rm_oneof)
+ {
+ result = copy_node (regexp,
+ sizeof (struct regexp) + sizeof (regexp_t)
+ * (regexp->regexp.oneof.regexps_num - 1));
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ result->regexp.oneof.regexps [i]
+ = copy_insn_regexp (regexp->regexp.oneof.regexps [i]);
+ }
+ else
+ {
+ if (regexp->mode != rm_nothing)
+ abort ();
+ result = copy_node (regexp, sizeof (struct regexp));
+ }
+ return result;
+}
+
+/* The following variable is set up 1 if a transformation has been
+ applied. */
+static int regexp_transformed_p;
+
+/* The function makes transformation
+ A*N -> A, A, ... */
+static regexp_t
+transform_1 (regexp)
+ regexp_t regexp;
+{
+ int i;
+ int repeat_num;
+ regexp_t operand;
+ pos_t pos;
+
+ if (regexp->mode == rm_repeat)
+ {
+ repeat_num = regexp->regexp.repeat.repeat_num;
+ if (repeat_num <= 1)
+ abort ();
+ operand = regexp->regexp.repeat.regexp;
+ pos = regexp->mode;
+ regexp = create_node (sizeof (struct regexp) + sizeof (regexp_t)
+ * (repeat_num - 1));
+ regexp->mode = rm_sequence;
+ regexp->pos = pos;
+ regexp->regexp.sequence.regexps_num = repeat_num;
+ for (i = 0; i < repeat_num; i++)
+ regexp->regexp.sequence.regexps [i] = copy_insn_regexp (operand);
+ regexp_transformed_p = 1;
+ }
+ return regexp;
+}
+
+/* The function makes transformations
+ ...,(A,B,...),C,... -> ...,A,B,...,C,...
+ ...+(A+B+...)+C+... -> ...+A+B+...+C+...
+ ...|(A|B|...)|C|... -> ...|A|B|...|C|... */
+static regexp_t
+transform_2 (regexp)
+ regexp_t regexp;
+{
+ if (regexp->mode == rm_sequence)
+ {
+ regexp_t sequence;
+ regexp_t result;
+ int sequence_index;
+ int i, j;
+
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ if (regexp->regexp.sequence.regexps [i]->mode == rm_sequence)
+ {
+ sequence_index = i;
+ sequence = regexp->regexp.sequence.regexps [i];
+ break;
+ }
+ if (i < regexp->regexp.sequence.regexps_num)
+ {
+ if (sequence->regexp.sequence.regexps_num <= 1
+ || regexp->regexp.sequence.regexps_num <= 1)
+ abort ();
+ result = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (regexp->regexp.sequence.regexps_num
+ + sequence->regexp.sequence.regexps_num
+ - 2));
+ result->mode = rm_sequence;
+ result->pos = regexp->pos;
+ result->regexp.sequence.regexps_num
+ = (regexp->regexp.sequence.regexps_num
+ + sequence->regexp.sequence.regexps_num - 1);
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ if (i < sequence_index)
+ result->regexp.sequence.regexps [i]
+ = copy_insn_regexp (regexp->regexp.sequence.regexps [i]);
+ else if (i > sequence_index)
+ result->regexp.sequence.regexps
+ [i + sequence->regexp.sequence.regexps_num - 1]
+ = copy_insn_regexp (regexp->regexp.sequence.regexps [i]);
+ else
+ for (j = 0; j < sequence->regexp.sequence.regexps_num; j++)
+ result->regexp.sequence.regexps [i + j]
+ = copy_insn_regexp (sequence->regexp.sequence.regexps [j]);
+ regexp_transformed_p = 1;
+ regexp = result;
+ }
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ regexp_t allof;
+ regexp_t result;
+ int allof_index;
+ int i, j;
+
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ if (regexp->regexp.allof.regexps [i]->mode == rm_allof)
+ {
+ allof_index = i;
+ allof = regexp->regexp.allof.regexps [i];
+ break;
+ }
+ if (i < regexp->regexp.allof.regexps_num)
+ {
+ if (allof->regexp.allof.regexps_num <= 1
+ || regexp->regexp.allof.regexps_num <= 1)
+ abort ();
+ result = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (regexp->regexp.allof.regexps_num
+ + allof->regexp.allof.regexps_num - 2));
+ result->mode = rm_allof;
+ result->pos = regexp->pos;
+ result->regexp.allof.regexps_num
+ = (regexp->regexp.allof.regexps_num
+ + allof->regexp.allof.regexps_num - 1);
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ if (i < allof_index)
+ result->regexp.allof.regexps [i]
+ = copy_insn_regexp (regexp->regexp.allof.regexps [i]);
+ else if (i > allof_index)
+ result->regexp.allof.regexps
+ [i + allof->regexp.allof.regexps_num - 1]
+ = copy_insn_regexp (regexp->regexp.allof.regexps [i]);
+ else
+ for (j = 0; j < allof->regexp.allof.regexps_num; j++)
+ result->regexp.allof.regexps [i + j]
+ = copy_insn_regexp (allof->regexp.allof.regexps [j]);
+ regexp_transformed_p = 1;
+ regexp = result;
+ }
+ }
+ else if (regexp->mode == rm_oneof)
+ {
+ regexp_t oneof;
+ regexp_t result;
+ int oneof_index;
+ int i, j;
+
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ if (regexp->regexp.oneof.regexps [i]->mode == rm_oneof)
+ {
+ oneof_index = i;
+ oneof = regexp->regexp.oneof.regexps [i];
+ break;
+ }
+ if (i < regexp->regexp.oneof.regexps_num)
+ {
+ if (oneof->regexp.oneof.regexps_num <= 1
+ || regexp->regexp.oneof.regexps_num <= 1)
+ abort ();
+ result = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (regexp->regexp.oneof.regexps_num
+ + oneof->regexp.oneof.regexps_num - 2));
+ result->mode = rm_oneof;
+ result->pos = regexp->pos;
+ result->regexp.oneof.regexps_num
+ = (regexp->regexp.oneof.regexps_num
+ + oneof->regexp.oneof.regexps_num - 1);
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ if (i < oneof_index)
+ result->regexp.oneof.regexps [i]
+ = copy_insn_regexp (regexp->regexp.oneof.regexps [i]);
+ else if (i > oneof_index)
+ result->regexp.oneof.regexps
+ [i + oneof->regexp.oneof.regexps_num - 1]
+ = copy_insn_regexp (regexp->regexp.oneof.regexps [i]);
+ else
+ for (j = 0; j < oneof->regexp.oneof.regexps_num; j++)
+ result->regexp.oneof.regexps [i + j]
+ = copy_insn_regexp (oneof->regexp.oneof.regexps [j]);
+ regexp_transformed_p = 1;
+ regexp = result;
+ }
+ }
+ return regexp;
+}
+
+/* The function makes transformations
+ ...,A|B|...,C,... -> (...,A,C,...)|(...,B,C,...)|...
+ ...+(A|B|...)+C+... -> (...+A+C+...)|(...+B+C+...)|... */
+static regexp_t
+transform_3 (regexp)
+ regexp_t regexp;
+{
+ if (regexp->mode == rm_sequence)
+ {
+ regexp_t oneof;
+ int oneof_index;
+ regexp_t result;
+ regexp_t sequence;
+ int i, j;
+
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ if (regexp->regexp.sequence.regexps [i]->mode == rm_oneof)
+ {
+ oneof_index = i;
+ oneof = regexp->regexp.sequence.regexps [i];
+ break;
+ }
+ if (i < regexp->regexp.sequence.regexps_num)
+ {
+ if (oneof->regexp.oneof.regexps_num <= 1
+ || regexp->regexp.sequence.regexps_num <= 1)
+ abort ();
+ result = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (oneof->regexp.oneof.regexps_num - 1));
+ result->mode = rm_oneof;
+ result->pos = regexp->pos;
+ result->regexp.oneof.regexps_num = oneof->regexp.oneof.regexps_num;
+ for (i = 0; i < result->regexp.oneof.regexps_num; i++)
+ {
+ sequence
+ = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (regexp->regexp.sequence.regexps_num - 1));
+ sequence->mode = rm_sequence;
+ sequence->pos = regexp->pos;
+ sequence->regexp.sequence.regexps_num
+ = regexp->regexp.sequence.regexps_num;
+ result->regexp.oneof.regexps [i] = sequence;
+ for (j = 0; j < sequence->regexp.sequence.regexps_num; j++)
+ if (j != oneof_index)
+ sequence->regexp.sequence.regexps [j]
+ = copy_insn_regexp (regexp->regexp.sequence.regexps [j]);
+ else
+ sequence->regexp.sequence.regexps [j]
+ = copy_insn_regexp (oneof->regexp.oneof.regexps [i]);
+ }
+ regexp_transformed_p = 1;
+ regexp = result;
+ }
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ regexp_t oneof;
+ int oneof_index;
+ regexp_t result;
+ regexp_t allof;
+ int i, j;
+
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ if (regexp->regexp.allof.regexps [i]->mode == rm_oneof)
+ {
+ oneof_index = i;
+ oneof = regexp->regexp.allof.regexps [i];
+ break;
+ }
+ if (i < regexp->regexp.allof.regexps_num)
+ {
+ if (oneof->regexp.oneof.regexps_num <= 1
+ || regexp->regexp.allof.regexps_num <= 1)
+ abort ();
+ result = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (oneof->regexp.oneof.regexps_num - 1));
+ result->mode = rm_oneof;
+ result->pos = regexp->pos;
+ result->regexp.oneof.regexps_num = oneof->regexp.oneof.regexps_num;
+ for (i = 0; i < result->regexp.oneof.regexps_num; i++)
+ {
+ allof
+ = create_node (sizeof (struct regexp)
+ + sizeof (regexp_t)
+ * (regexp->regexp.allof.regexps_num - 1));
+ allof->mode = rm_allof;
+ allof->pos = regexp->pos;
+ allof->regexp.allof.regexps_num
+ = regexp->regexp.allof.regexps_num;
+ result->regexp.oneof.regexps [i] = allof;
+ for (j = 0; j < allof->regexp.allof.regexps_num; j++)
+ if (j != oneof_index)
+ allof->regexp.allof.regexps [j]
+ = copy_insn_regexp (regexp->regexp.allof.regexps [j]);
+ else
+ allof->regexp.allof.regexps [j]
+ = copy_insn_regexp (oneof->regexp.oneof.regexps [i]);
+ }
+ regexp_transformed_p = 1;
+ regexp = result;
+ }
+ }
+ return regexp;
+}
+
+/* The function traverses IR of reservation and applies transformations
+ implemented by FUNC. */
+static regexp_t
+regexp_transform_func (regexp, func)
+ regexp_t regexp;
+ regexp_t (*func) PARAMS ((regexp_t regexp));
+{
+ int i;
+
+ if (regexp->mode == rm_sequence)
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ regexp->regexp.sequence.regexps [i]
+ = regexp_transform_func (regexp->regexp.sequence.regexps [i], func);
+ else if (regexp->mode == rm_allof)
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ regexp->regexp.allof.regexps [i]
+ = regexp_transform_func (regexp->regexp.allof.regexps [i], func);
+ else if (regexp->mode == rm_oneof)
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ regexp->regexp.oneof.regexps [i]
+ = regexp_transform_func (regexp->regexp.oneof.regexps [i], func);
+ else if (regexp->mode == rm_repeat)
+ regexp->regexp.repeat.regexp
+ = regexp_transform_func (regexp->regexp.repeat.regexp, func);
+ else if (regexp->mode != rm_nothing && regexp->mode != rm_unit)
+ abort ();
+ return (*func) (regexp);
+}
+
+/* The function applies all transformations for IR representation of
+ reservation REGEXP. */
+static regexp_t
+transform_regexp (regexp)
+ regexp_t regexp;
+{
+ regexp = regexp_transform_func (regexp, transform_1);
+ do
+ {
+ regexp_transformed_p = 0;
+ regexp = regexp_transform_func (regexp, transform_2);
+ regexp = regexp_transform_func (regexp, transform_3);
+ }
+ while (regexp_transformed_p);
+ return regexp;
+}
+
+/* The function applys all transformations for reservations of all
+ insn declarations. */
+static void
+transform_insn_regexps ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ decl->decl.insn_reserv.transformed_regexp
+ = transform_regexp (copy_insn_regexp
+ (decl->decl.insn_reserv.regexp));
+ }
+}
+
+\f
+
+/* The page contains code for building alt_states (see comments for
+ IR) describing all possible insns reservations of an automaton. */
+
+/* Current state being formed for which the current alt_state
+ refers. */
+static state_t state_being_formed;
+
+/* Current alt_state being formed. */
+static alt_state_t alt_state_being_formed;
+
+/* This recursive function processes `,' and units in reservation
+ REGEXP for forming alt_states of AUTOMATON. It is believed that
+ CURR_CYCLE is start cycle of all reservation REGEXP. */
+static int
+process_seq_for_forming_states (regexp, automaton, curr_cycle)
+ regexp_t regexp;
+ automaton_t automaton;
+ int curr_cycle;
+{
+ int i;
+
+ if (regexp == NULL)
+ return curr_cycle;
+ else if (regexp->mode == rm_unit)
+ {
+ if (regexp->regexp.unit.unit_decl->corresponding_automaton_num
+ == automaton->automaton_order_num)
+ set_state_reserv (state_being_formed, curr_cycle,
+ regexp->regexp.unit.unit_decl->unit_num);
+ return curr_cycle;
+ }
+ else if (regexp->mode == rm_sequence)
+ {
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ curr_cycle
+ = process_seq_for_forming_states
+ (regexp->regexp.sequence.regexps [i], automaton, curr_cycle) + 1;
+ return curr_cycle;
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ int finish_cycle = 0;
+ int cycle;
+
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ {
+ cycle
+ = process_seq_for_forming_states (regexp->regexp.allof.regexps [i],
+ automaton, curr_cycle);
+ if (finish_cycle < cycle)
+ finish_cycle = cycle;
+ }
+ return finish_cycle;
+ }
+ else
+ {
+ if (regexp->mode != rm_nothing)
+ abort ();
+ return curr_cycle;
+ }
+}
+
+/* This recursive function finishes forming ALT_STATE of AUTOMATON and
+ inserts alt_state into the table. */
+static void
+finish_forming_alt_state (alt_state, automaton)
+ alt_state_t alt_state;
+ automaton_t automaton ATTRIBUTE_UNUSED;
+{
+ state_t state_in_table;
+ state_t corresponding_state;
+
+ corresponding_state = alt_state->state;
+ state_in_table = insert_state (corresponding_state);
+ if (state_in_table != corresponding_state)
+ {
+ free_state (corresponding_state);
+ alt_state->state = state_in_table;
+ }
+}
+
+/* The following variable value is current automaton insn for whose
+ reservation the alt states are created. */
+static ainsn_t curr_ainsn;
+
+/* This recursive function processes `|' in reservation REGEXP for
+ forming alt_states of AUTOMATON. List of the alt states should
+ have the same order as in the description. */
+static void
+process_alts_for_forming_states (regexp, automaton, inside_oneof_p)
+ regexp_t regexp;
+ automaton_t automaton;
+ int inside_oneof_p;
+{
+ int i;
+
+ if (regexp->mode != rm_oneof)
+ {
+ alt_state_being_formed = get_free_alt_state ();
+ state_being_formed = get_free_state (1, automaton);
+ alt_state_being_formed->state = state_being_formed;
+ /* We inserts in reverse order but we process alternatives also
+ in reverse order. So we have the same order of alternative
+ as in the description. */
+ alt_state_being_formed->next_alt_state = curr_ainsn->alt_states;
+ curr_ainsn->alt_states = alt_state_being_formed;
+ (void) process_seq_for_forming_states (regexp, automaton, 0);
+ finish_forming_alt_state (alt_state_being_formed, automaton);
+ }
+ else
+ {
+ if (inside_oneof_p)
+ abort ();
+ /* We processes it in reverse order to get list with the same
+ order as in the description. See also the previous
+ commentary. */
+ for (i = regexp->regexp.oneof.regexps_num - 1; i >= 0; i--)
+ process_alts_for_forming_states (regexp->regexp.oneof.regexps [i],
+ automaton, 1);
+ }
+}
+
+/* Create nodes alt_state for all AUTOMATON insns. */
+static void
+create_alt_states (automaton)
+ automaton_t automaton;
+{
+ struct insn_reserv_decl *reserv_decl;
+
+ for (curr_ainsn = automaton->ainsn_list;
+ curr_ainsn != NULL;
+ curr_ainsn = curr_ainsn->next_ainsn)
+ {
+ reserv_decl = curr_ainsn->insn_reserv_decl;
+ if (reserv_decl != &advance_cycle_insn_decl->decl.insn_reserv)
+ {
+ curr_ainsn->alt_states = NULL;
+ process_alts_for_forming_states (reserv_decl->transformed_regexp,
+ automaton, 0);
+ curr_ainsn->sorted_alt_states
+ = uniq_sort_alt_states (curr_ainsn->alt_states);
+ }
+ }
+}
+
+\f
+
+/* The page contains major code for building DFA(s) for fast pipeline
+ hazards recognition. */
+
+/* The function forms list of ainsns of AUTOMATON with the same
+ reservation. */
+static void
+form_ainsn_with_same_reservs (automaton)
+ automaton_t automaton;
+{
+ ainsn_t curr_ainsn;
+ size_t i;
+ vla_ptr_t first_insns;
+ vla_ptr_t last_insns;
+
+ VLA_PTR_CREATE (first_insns, 150, "first insns with the same reservs");
+ VLA_PTR_CREATE (last_insns, 150, "last insns with the same reservs");
+ for (curr_ainsn = automaton->ainsn_list;
+ curr_ainsn != NULL;
+ curr_ainsn = curr_ainsn->next_ainsn)
+ if (curr_ainsn->insn_reserv_decl
+ == &advance_cycle_insn_decl->decl.insn_reserv)
+ {
+ curr_ainsn->next_same_reservs_insn = NULL;
+ curr_ainsn->first_insn_with_same_reservs = 1;
+ }
+ else
+ {
+ for (i = 0; i < VLA_PTR_LENGTH (first_insns); i++)
+ if (alt_states_eq
+ (curr_ainsn->sorted_alt_states,
+ ((ainsn_t) VLA_PTR (first_insns, i))->sorted_alt_states))
+ break;
+ curr_ainsn->next_same_reservs_insn = NULL;
+ if (i < VLA_PTR_LENGTH (first_insns))
+ {
+ curr_ainsn->first_insn_with_same_reservs = 0;
+ ((ainsn_t) VLA_PTR (last_insns, i))->next_same_reservs_insn
+ = curr_ainsn;
+ VLA_PTR (last_insns, i) = curr_ainsn;
+ }
+ else
+ {
+ VLA_PTR_ADD (first_insns, curr_ainsn);
+ VLA_PTR_ADD (last_insns, curr_ainsn);
+ curr_ainsn->first_insn_with_same_reservs = 1;
+ }
+ }
+ VLA_PTR_DELETE (first_insns);
+ VLA_PTR_DELETE (last_insns);
+}
+
+/* The following function creates all states of nondeterministic (if
+ NDFA_FLAG has nonzero value) or deterministic AUTOMATON. */
+static void
+make_automaton (automaton)
+ automaton_t automaton;
+{
+ ainsn_t ainsn;
+ struct insn_reserv_decl *insn_reserv_decl;
+ alt_state_t alt_state;
+ state_t state;
+ state_t start_state;
+ state_t state2;
+ ainsn_t advance_cycle_ainsn;
+ arc_t added_arc;
+ vla_ptr_t state_stack;
+
+ VLA_PTR_CREATE (state_stack, 150, "state stack");
+ /* Create the start state (empty state). */
+ start_state = insert_state (get_free_state (1, automaton));
+ automaton->start_state = start_state;
+ start_state->it_was_placed_in_stack_for_NDFA_forming = 1;
+ VLA_PTR_ADD (state_stack, start_state);
+ while (VLA_PTR_LENGTH (state_stack) != 0)
+ {
+ state = VLA_PTR (state_stack, VLA_PTR_LENGTH (state_stack) - 1);
+ VLA_PTR_SHORTEN (state_stack, 1);
+ advance_cycle_ainsn = NULL;
+ for (ainsn = automaton->ainsn_list;
+ ainsn != NULL;
+ ainsn = ainsn->next_ainsn)
+ if (ainsn->first_insn_with_same_reservs)
+ {
+ insn_reserv_decl = ainsn->insn_reserv_decl;
+ if (insn_reserv_decl != &advance_cycle_insn_decl->decl.insn_reserv)
+ {
+ /* We process alt_states in the same order as they are
+ present in the description. */
+ added_arc = NULL;
+ for (alt_state = ainsn->alt_states;
+ alt_state != NULL;
+ alt_state = alt_state->next_alt_state)
+ {
+ state2 = alt_state->state;
+ if (!intersected_state_reservs_p (state, state2))
+ {
+ state2 = states_union (state, state2);
+ if (!state2->it_was_placed_in_stack_for_NDFA_forming)
+ {
+ state2->it_was_placed_in_stack_for_NDFA_forming
+ = 1;
+ VLA_PTR_ADD (state_stack, state2);
+ }
+ added_arc = add_arc (state, state2, ainsn, 1);
+ if (!ndfa_flag)
+ break;
+ }
+ }
+ if (!ndfa_flag && added_arc != NULL)
+ {
+ added_arc->state_alts = 0;
+ for (alt_state = ainsn->alt_states;
+ alt_state != NULL;
+ alt_state = alt_state->next_alt_state)
+ {
+ state2 = alt_state->state;
+ if (!intersected_state_reservs_p (state, state2))
+ added_arc->state_alts++;
+ }
+ }
+ }
+ else
+ advance_cycle_ainsn = ainsn;
+ }
+ /* Add transition to advance cycle. */
+ state2 = state_shift (state);
+ if (!state2->it_was_placed_in_stack_for_NDFA_forming)
+ {
+ state2->it_was_placed_in_stack_for_NDFA_forming = 1;
+ VLA_PTR_ADD (state_stack, state2);
+ }
+ if (advance_cycle_ainsn == NULL)
+ abort ();
+ add_arc (state, state2, advance_cycle_ainsn, 1);
+ }
+ VLA_PTR_DELETE (state_stack);
+}
+
+/* Foms lists of all arcs of STATE marked by the same ainsn. */
+static void
+form_arcs_marked_by_insn (state)
+ state_t state;
+{
+ decl_t decl;
+ arc_t arc;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ decl->decl.insn_reserv.arcs_marked_by_insn = NULL;
+ }
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ if (arc->insn == NULL)
+ abort ();
+ arc->next_arc_marked_by_insn
+ = arc->insn->insn_reserv_decl->arcs_marked_by_insn;
+ arc->insn->insn_reserv_decl->arcs_marked_by_insn = arc;
+ }
+}
+
+/* The function creates composed state (see comments for IR) from
+ ORIGINAL_STATE and list of arcs ARCS_MARKED_BY_INSN marked by the
+ same insn. If the composed state is not in STATE_STACK yet, it is
+ popped to STATE_STACK. */
+static void
+create_composed_state (original_state, arcs_marked_by_insn, state_stack)
+ state_t original_state;
+ arc_t arcs_marked_by_insn;
+ vla_ptr_t *state_stack;
+{
+ state_t state;
+ alt_state_t curr_alt_state;
+ alt_state_t new_alt_state;
+ arc_t curr_arc;
+ arc_t next_arc;
+ state_t state_in_table;
+ state_t temp_state;
+ alt_state_t canonical_alt_states_list;
+ int alts_number;
+
+ if (arcs_marked_by_insn == NULL)
+ return;
+ if (arcs_marked_by_insn->next_arc_marked_by_insn == NULL)
+ state = arcs_marked_by_insn->to_state;
+ else
+ {
+ if (!ndfa_flag)
+ abort ();
+ /* Create composed state. */
+ state = get_free_state (0, arcs_marked_by_insn->to_state->automaton);
+ curr_alt_state = NULL;
+ for (curr_arc = arcs_marked_by_insn;
+ curr_arc != NULL;
+ curr_arc = curr_arc->next_arc_marked_by_insn)
+ {
+ new_alt_state = get_free_alt_state ();
+ new_alt_state->next_alt_state = curr_alt_state;
+ new_alt_state->state = curr_arc->to_state;
+ if (curr_arc->to_state->component_states != NULL)
+ abort ();
+ curr_alt_state = new_alt_state;
+ }
+ /* There are not identical sets in the alt state list. */
+ canonical_alt_states_list = uniq_sort_alt_states (curr_alt_state);
+ if (canonical_alt_states_list->next_sorted_alt_state == NULL)
+ {
+ temp_state = state;
+ state = canonical_alt_states_list->state;
+ free_state (temp_state);
+ }
+ else
+ {
+ state->component_states = canonical_alt_states_list;
+ state_in_table = insert_state (state);
+ if (state_in_table != state)
+ {
+ if (!state_in_table->it_was_placed_in_stack_for_DFA_forming)
+ abort ();
+ free_state (state);
+ state = state_in_table;
+ }
+ else
+ {
+ if (state->it_was_placed_in_stack_for_DFA_forming)
+ abort ();
+ for (curr_alt_state = state->component_states;
+ curr_alt_state != NULL;
+ curr_alt_state = curr_alt_state->next_sorted_alt_state)
+ for (curr_arc = first_out_arc (curr_alt_state->state);
+ curr_arc != NULL;
+ curr_arc = next_out_arc (curr_arc))
+ add_arc (state, curr_arc->to_state, curr_arc->insn, 1);
+ }
+ arcs_marked_by_insn->to_state = state;
+ for (alts_number = 0,
+ curr_arc = arcs_marked_by_insn->next_arc_marked_by_insn;
+ curr_arc != NULL;
+ curr_arc = next_arc)
+ {
+ next_arc = curr_arc->next_arc_marked_by_insn;
+ remove_arc (original_state, curr_arc);
+ alts_number++;
+ }
+ arcs_marked_by_insn->state_alts = alts_number;
+ }
+ }
+ if (!state->it_was_placed_in_stack_for_DFA_forming)
+ {
+ state->it_was_placed_in_stack_for_DFA_forming = 1;
+ VLA_PTR_ADD (*state_stack, state);
+ }
+}
+
+/* The function transformes nondeterminstic AUTOMATON into
+ deterministic. */
+static void
+NDFA_to_DFA (automaton)
+ automaton_t automaton;
+{
+ state_t start_state;
+ state_t state;
+ decl_t decl;
+ vla_ptr_t state_stack;
+ int i;
+
+ VLA_PTR_CREATE (state_stack, 150, "state stack");
+ /* Create the start state (empty state). */
+ start_state = automaton->start_state;
+ start_state->it_was_placed_in_stack_for_DFA_forming = 1;
+ VLA_PTR_ADD (state_stack, start_state);
+ while (VLA_PTR_LENGTH (state_stack) != 0)
+ {
+ state = VLA_PTR (state_stack, VLA_PTR_LENGTH (state_stack) - 1);
+ VLA_PTR_SHORTEN (state_stack, 1);
+ form_arcs_marked_by_insn (state);
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ create_composed_state
+ (state, decl->decl.insn_reserv.arcs_marked_by_insn,
+ &state_stack);
+ }
+ }
+ VLA_PTR_DELETE (state_stack);
+}
+
+/* The following variable value is current number (1, 2, ...) of passing
+ graph of states. */
+static int curr_state_graph_pass_num;
+
+/* This recursive function passes all states achieved from START_STATE
+ and applies APPLIED_FUNC to them. */
+static void
+pass_state_graph (start_state, applied_func)
+ state_t start_state;
+ void (*applied_func) PARAMS ((state_t state));
+{
+ arc_t arc;
+
+ if (start_state->pass_num == curr_state_graph_pass_num)
+ return;
+ start_state->pass_num = curr_state_graph_pass_num;
+ (*applied_func) (start_state);
+ for (arc = first_out_arc (start_state);
+ arc != NULL;
+ arc = next_out_arc (arc))
+ pass_state_graph (arc->to_state, applied_func);
+}
+
+/* This recursive function passes all states of AUTOMATON and applies
+ APPLIED_FUNC to them. */
+static void
+pass_states (automaton, applied_func)
+ automaton_t automaton;
+ void (*applied_func) PARAMS ((state_t state));
+{
+ curr_state_graph_pass_num++;
+ pass_state_graph (automaton->start_state, applied_func);
+}
+
+/* The function initializes code for passing of all states. */
+static void
+initiate_pass_states ()
+{
+ curr_state_graph_pass_num = 0;
+}
+
+/* The following vla is used for storing pointers to all achieved
+ states. */
+static vla_ptr_t all_achieved_states;
+
+/* This function is called by function pass_states to add an achieved
+ STATE. */
+static void
+add_achieved_state (state)
+ state_t state;
+{
+ VLA_PTR_ADD (all_achieved_states, state);
+}
+
+/* The function sets up equivalence numbers of insns which mark all
+ out arcs of STATE by equiv_class_num_1 (if ODD_ITERATION_FLAG has
+ nonzero value) or by equiv_class_num_2 of the destination state.
+ The function returns number of out arcs of STATE. */
+static int
+set_out_arc_insns_equiv_num (state, odd_iteration_flag)
+ state_t state;
+ int odd_iteration_flag;
+{
+ int state_out_arcs_num;
+ arc_t arc;
+
+ state_out_arcs_num = 0;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ if (arc->insn->insn_reserv_decl->equiv_class_num != 0
+ || arc->insn->insn_reserv_decl->state_alts != 0)
+ abort ();
+ state_out_arcs_num++;
+ arc->insn->insn_reserv_decl->equiv_class_num
+ = (odd_iteration_flag
+ ? arc->to_state->equiv_class_num_1
+ : arc->to_state->equiv_class_num_2);
+ arc->insn->insn_reserv_decl->state_alts = arc->state_alts;
+ if (arc->insn->insn_reserv_decl->equiv_class_num == 0
+ || arc->insn->insn_reserv_decl->state_alts <= 0)
+ abort ();
+ }
+ return state_out_arcs_num;
+}
+
+/* The function clears equivalence numbers and alt_states in all insns
+ which mark all out arcs of STATE. */
+static void
+clear_arc_insns_equiv_num (state)
+ state_t state;
+{
+ arc_t arc;
+
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ arc->insn->insn_reserv_decl->equiv_class_num = 0;
+ arc->insn->insn_reserv_decl->state_alts = 0;
+ }
+}
+
+/* The function copies pointers to equivalent states from vla FROM
+ into vla TO. */
+static void
+copy_equiv_class (to, from)
+ vla_ptr_t *to;
+ const vla_ptr_t *from;
+{
+ state_t *class_ptr;
+
+ VLA_PTR_NULLIFY (*to);
+ for (class_ptr = VLA_PTR_BEGIN (*from);
+ class_ptr <= (state_t *) VLA_PTR_LAST (*from);
+ class_ptr++)
+ VLA_PTR_ADD (*to, *class_ptr);
+}
+
+/* The function returns nonzero value if STATE is not equivalent to
+ another state from the same current partition on equivalence
+ classes Another state has ORIGINAL_STATE_OUT_ARCS_NUM number of
+ output arcs. Iteration of making equivalence partition is defined
+ by ODD_ITERATION_FLAG. */
+static int
+state_is_differed (state, original_state_out_arcs_num, odd_iteration_flag)
+ state_t state;
+ int original_state_out_arcs_num;
+ int odd_iteration_flag;
+{
+ arc_t arc;
+ int state_out_arcs_num;
+
+ state_out_arcs_num = 0;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ state_out_arcs_num++;
+ if ((odd_iteration_flag
+ ? arc->to_state->equiv_class_num_1
+ : arc->to_state->equiv_class_num_2)
+ != arc->insn->insn_reserv_decl->equiv_class_num
+ || (arc->insn->insn_reserv_decl->state_alts != arc->state_alts))
+ return 1;
+ }
+ return state_out_arcs_num != original_state_out_arcs_num;
+}
+
+/* The function makes initial partition of STATES on equivalent
+ classes. */
+static state_t
+init_equiv_class (states, states_num)
+ state_t *states;
+ int states_num;
+{
+ state_t *state_ptr;
+ state_t result_equiv_class;
+
+ result_equiv_class = NULL;
+ for (state_ptr = states; state_ptr < states + states_num; state_ptr++)
+ {
+ (*state_ptr)->equiv_class_num_1 = 1;
+ (*state_ptr)->next_equiv_class_state = result_equiv_class;
+ result_equiv_class = *state_ptr;
+ }
+ return result_equiv_class;
+}
+
+/* The function processes equivalence class given by its pointer
+ EQUIV_CLASS_PTR on odd iteration if ODD_ITERATION_FLAG. If there
+ are not equvalent states, the function partitions the class
+ removing nonequivalent states and placing them in
+ *NEXT_ITERATION_CLASSES, increments *NEW_EQUIV_CLASS_NUM_PTR ans
+ assigns it to the state equivalence number. If the class has been
+ partitioned, the function returns nonzero value. */
+static int
+partition_equiv_class (equiv_class_ptr, odd_iteration_flag,
+ next_iteration_classes, new_equiv_class_num_ptr)
+ state_t *equiv_class_ptr;
+ int odd_iteration_flag;
+ vla_ptr_t *next_iteration_classes;
+ int *new_equiv_class_num_ptr;
+{
+ state_t new_equiv_class;
+ int partition_p;
+ state_t first_state;
+ state_t curr_state;
+ state_t prev_state;
+ state_t next_state;
+ int out_arcs_num;
+
+ partition_p = 0;
+ if (*equiv_class_ptr == NULL)
+ abort ();
+ for (first_state = *equiv_class_ptr;
+ first_state != NULL;
+ first_state = new_equiv_class)
+ {
+ new_equiv_class = NULL;
+ if (first_state->next_equiv_class_state != NULL)
+ {
+ /* There are more one states in the class equivalence. */
+ out_arcs_num = set_out_arc_insns_equiv_num (first_state,
+ odd_iteration_flag);
+ for (prev_state = first_state,
+ curr_state = first_state->next_equiv_class_state;
+ curr_state != NULL;
+ curr_state = next_state)
+ {
+ next_state = curr_state->next_equiv_class_state;
+ if (state_is_differed (curr_state, out_arcs_num,
+ odd_iteration_flag))
+ {
+ /* Remove curr state from the class equivalence. */
+ prev_state->next_equiv_class_state = next_state;
+ /* Add curr state to the new class equivalence. */
+ curr_state->next_equiv_class_state = new_equiv_class;
+ if (new_equiv_class == NULL)
+ (*new_equiv_class_num_ptr)++;
+ if (odd_iteration_flag)
+ curr_state->equiv_class_num_2 = *new_equiv_class_num_ptr;
+ else
+ curr_state->equiv_class_num_1 = *new_equiv_class_num_ptr;
+ new_equiv_class = curr_state;
+ partition_p = 1;
+ }
+ else
+ prev_state = curr_state;
+ }
+ clear_arc_insns_equiv_num (first_state);
+ }
+ if (new_equiv_class != NULL)
+ VLA_PTR_ADD (*next_iteration_classes, new_equiv_class);
+ }
+ return partition_p;
+}
+
+/* The function finds equivalent states of AUTOMATON. */
+static void
+evaluate_equiv_classes (automaton, equiv_classes)
+ automaton_t automaton;
+ vla_ptr_t *equiv_classes;
+{
+ state_t new_equiv_class;
+ int new_equiv_class_num;
+ int odd_iteration_flag;
+ int finish_flag;
+ vla_ptr_t next_iteration_classes;
+ state_t *equiv_class_ptr;
+ state_t *state_ptr;
+
+ VLA_PTR_CREATE (all_achieved_states, 1500, "all achieved states");
+ pass_states (automaton, add_achieved_state);
+ new_equiv_class = init_equiv_class (VLA_PTR_BEGIN (all_achieved_states),
+ VLA_PTR_LENGTH (all_achieved_states));
+ odd_iteration_flag = 0;
+ new_equiv_class_num = 1;
+ VLA_PTR_CREATE (next_iteration_classes, 150, "next iteration classes");
+ VLA_PTR_ADD (next_iteration_classes, new_equiv_class);
+ do
+ {
+ odd_iteration_flag = !odd_iteration_flag;
+ finish_flag = 1;
+ copy_equiv_class (equiv_classes, &next_iteration_classes);
+ /* Transfer equiv numbers for the next iteration. */
+ for (state_ptr = VLA_PTR_BEGIN (all_achieved_states);
+ state_ptr <= (state_t *) VLA_PTR_LAST (all_achieved_states);
+ state_ptr++)
+ if (odd_iteration_flag)
+ (*state_ptr)->equiv_class_num_2 = (*state_ptr)->equiv_class_num_1;
+ else
+ (*state_ptr)->equiv_class_num_1 = (*state_ptr)->equiv_class_num_2;
+ for (equiv_class_ptr = VLA_PTR_BEGIN (*equiv_classes);
+ equiv_class_ptr <= (state_t *) VLA_PTR_LAST (*equiv_classes);
+ equiv_class_ptr++)
+ if (partition_equiv_class (equiv_class_ptr, odd_iteration_flag,
+ &next_iteration_classes,
+ &new_equiv_class_num))
+ finish_flag = 0;
+ }
+ while (!finish_flag);
+ VLA_PTR_DELETE (next_iteration_classes);
+ VLA_PTR_DELETE (all_achieved_states);
+}
+
+/* The function merges equivalent states of AUTOMATON. */
+static void
+merge_states (automaton, equiv_classes)
+ automaton_t automaton;
+ vla_ptr_t *equiv_classes;
+{
+ state_t *equiv_class_ptr;
+ state_t curr_state;
+ state_t new_state;
+ state_t first_class_state;
+ alt_state_t alt_states;
+ alt_state_t new_alt_state;
+ arc_t curr_arc;
+ arc_t next_arc;
+
+ /* Create states corresponding to equivalence classes containing two
+ or more states. */
+ for (equiv_class_ptr = VLA_PTR_BEGIN (*equiv_classes);
+ equiv_class_ptr <= (state_t *) VLA_PTR_LAST (*equiv_classes);
+ equiv_class_ptr++)
+ if ((*equiv_class_ptr)->next_equiv_class_state != NULL)
+ {
+ /* There are more one states in the class equivalence. */
+ /* Create new compound state. */
+ new_state = get_free_state (0, automaton);
+ alt_states = NULL;
+ first_class_state = *equiv_class_ptr;
+ for (curr_state = first_class_state;
+ curr_state != NULL;
+ curr_state = curr_state->next_equiv_class_state)
+ {
+ curr_state->equiv_class_state = new_state;
+ new_alt_state = get_free_alt_state ();
+ new_alt_state->state = curr_state;
+ new_alt_state->next_sorted_alt_state = alt_states;
+ alt_states = new_alt_state;
+ }
+ new_state->component_states = alt_states;
+ }
+ else
+ (*equiv_class_ptr)->equiv_class_state = *equiv_class_ptr;
+ for (equiv_class_ptr = VLA_PTR_BEGIN (*equiv_classes);
+ equiv_class_ptr <= (state_t *) VLA_PTR_LAST (*equiv_classes);
+ equiv_class_ptr++)
+ if ((*equiv_class_ptr)->next_equiv_class_state != NULL)
+ {
+ first_class_state = *equiv_class_ptr;
+ /* Create new arcs output from the state corresponding to
+ equiv class. */
+ for (curr_arc = first_out_arc (first_class_state);
+ curr_arc != NULL;
+ curr_arc = next_out_arc (curr_arc))
+ add_arc (first_class_state->equiv_class_state,
+ curr_arc->to_state->equiv_class_state,
+ curr_arc->insn, curr_arc->state_alts);
+ /* Delete output arcs from states of given class equivalence. */
+ for (curr_state = first_class_state;
+ curr_state != NULL;
+ curr_state = curr_state->next_equiv_class_state)
+ {
+ if (automaton->start_state == curr_state)
+ automaton->start_state = curr_state->equiv_class_state;
+ /* Delete the state and its output arcs. */
+ for (curr_arc = first_out_arc (curr_state);
+ curr_arc != NULL;
+ curr_arc = next_arc)
+ {
+ next_arc = next_out_arc (curr_arc);
+ free_arc (curr_arc);
+ }
+ }
+ }
+ else
+ {
+ /* Change `to_state' of arcs output from the state of given
+ equivalence class. */
+ for (curr_arc = first_out_arc (*equiv_class_ptr);
+ curr_arc != NULL;
+ curr_arc = next_out_arc (curr_arc))
+ curr_arc->to_state = curr_arc->to_state->equiv_class_state;
+ }
+}
+
+/* The function sets up new_cycle_p for states if there is arc to the
+ state marked by advance_cycle_insn_decl. */
+static void
+set_new_cycle_flags (state)
+ state_t state;
+{
+ arc_t arc;
+
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ if (arc->insn->insn_reserv_decl
+ == &advance_cycle_insn_decl->decl.insn_reserv)
+ arc->to_state->new_cycle_p = 1;
+}
+
+/* The top level function for minimization of deterministic
+ AUTOMATON. */
+static void
+minimize_DFA (automaton)
+ automaton_t automaton;
+{
+ vla_ptr_t equiv_classes;
+
+ VLA_PTR_CREATE (equiv_classes, 1500, "equivalence classes");
+ evaluate_equiv_classes (automaton, &equiv_classes);
+ merge_states (automaton, &equiv_classes);
+ pass_states (automaton, set_new_cycle_flags);
+ VLA_PTR_DELETE (equiv_classes);
+}
+
+/* Values of two variables are counted number of states and arcs in an
+ automaton. */
+static int curr_counted_states_num;
+static int curr_counted_arcs_num;
+
+/* The function is called by function `pass_states' to count states
+ and arcs of an automaton. */
+static void
+incr_states_and_arcs_nums (state)
+ state_t state;
+{
+ arc_t arc;
+
+ curr_counted_states_num++;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ curr_counted_arcs_num++;
+}
+
+/* The function counts states and arcs of AUTOMATON. */
+static void
+count_states_and_arcs (automaton, states_num, arcs_num)
+ automaton_t automaton;
+ int *states_num;
+ int *arcs_num;
+{
+ curr_counted_states_num = 0;
+ curr_counted_arcs_num = 0;
+ pass_states (automaton, incr_states_and_arcs_nums);
+ *states_num = curr_counted_states_num;
+ *arcs_num = curr_counted_arcs_num;
+}
+
+/* The function builds one DFA AUTOMATON for fast pipeline hazards
+ recognition after checking and simplifying IR of the
+ description. */
+static void
+build_automaton (automaton)
+ automaton_t automaton;
+{
+ int states_num;
+ int arcs_num;
+
+ ticker_on (&NDFA_time);
+ make_automaton (automaton);
+ ticker_off (&NDFA_time);
+ count_states_and_arcs (automaton, &states_num, &arcs_num);
+ automaton->NDFA_states_num = states_num;
+ automaton->NDFA_arcs_num = arcs_num;
+ ticker_on (&NDFA_to_DFA_time);
+ NDFA_to_DFA (automaton);
+ ticker_off (&NDFA_to_DFA_time);
+ count_states_and_arcs (automaton, &states_num, &arcs_num);
+ automaton->DFA_states_num = states_num;
+ automaton->DFA_arcs_num = arcs_num;
+ if (!no_minimization_flag)
+ {
+ ticker_on (&minimize_time);
+ minimize_DFA (automaton);
+ ticker_off (&minimize_time);
+ count_states_and_arcs (automaton, &states_num, &arcs_num);
+ automaton->minimal_DFA_states_num = states_num;
+ automaton->minimal_DFA_arcs_num = arcs_num;
+ }
+}
+
+\f
+
+/* The page contains code for enumeration of all states of an automaton. */
+
+/* Variable used for enumeration of all states of an automaton. Its
+ value is current number of automaton states. */
+static int curr_state_order_num;
+
+/* The function is called by function `pass_states' for enumerating
+ states. */
+static void
+set_order_state_num (state)
+ state_t state;
+{
+ state->order_state_num = curr_state_order_num;
+ curr_state_order_num++;
+}
+
+/* The function enumerates all states of AUTOMATON. */
+static void
+enumerate_states (automaton)
+ automaton_t automaton;
+{
+ curr_state_order_num = 0;
+ pass_states (automaton, set_order_state_num);
+ automaton->achieved_states_num = curr_state_order_num;
+}
+
+\f
+
+/* The page contains code for finding equivalent automaton insns
+ (ainsns). */
+
+/* The function inserts AINSN into cyclic list
+ CYCLIC_EQUIV_CLASS_INSN_LIST of ainsns. */
+static ainsn_t
+insert_ainsn_into_equiv_class (ainsn, cyclic_equiv_class_insn_list)
+ ainsn_t ainsn;
+ ainsn_t cyclic_equiv_class_insn_list;
+{
+ if (cyclic_equiv_class_insn_list == NULL)
+ ainsn->next_equiv_class_insn = ainsn;
+ else
+ {
+ ainsn->next_equiv_class_insn
+ = cyclic_equiv_class_insn_list->next_equiv_class_insn;
+ cyclic_equiv_class_insn_list->next_equiv_class_insn = ainsn;
+ }
+ return ainsn;
+}
+
+/* The function deletes equiv_class_insn into cyclic list of
+ equivalent ainsns. */
+static void
+delete_ainsn_from_equiv_class (equiv_class_insn)
+ ainsn_t equiv_class_insn;
+{
+ ainsn_t curr_equiv_class_insn;
+ ainsn_t prev_equiv_class_insn;
+
+ prev_equiv_class_insn = equiv_class_insn;
+ for (curr_equiv_class_insn = equiv_class_insn->next_equiv_class_insn;
+ curr_equiv_class_insn != equiv_class_insn;
+ curr_equiv_class_insn = curr_equiv_class_insn->next_equiv_class_insn)
+ prev_equiv_class_insn = curr_equiv_class_insn;
+ if (prev_equiv_class_insn != equiv_class_insn)
+ prev_equiv_class_insn->next_equiv_class_insn
+ = equiv_class_insn->next_equiv_class_insn;
+}
+
+/* The function processes AINSN of a state in order to find equivalent
+ ainsns. INSN_ARCS_ARRAY is table: code of insn -> out arc of the
+ state. */
+static void
+process_insn_equiv_class (ainsn, insn_arcs_array)
+ ainsn_t ainsn;
+ arc_t *insn_arcs_array;
+{
+ ainsn_t next_insn;
+ ainsn_t curr_insn;
+ ainsn_t cyclic_insn_list;
+ arc_t arc;
+
+ if (insn_arcs_array [ainsn->insn_reserv_decl->insn_num] == NULL)
+ abort ();
+ curr_insn = ainsn;
+ /* New class of ainsns which are not equivalent to given ainsn. */
+ cyclic_insn_list = NULL;
+ do
+ {
+ next_insn = curr_insn->next_equiv_class_insn;
+ arc = insn_arcs_array [curr_insn->insn_reserv_decl->insn_num];
+ if (arc == NULL
+ || (insn_arcs_array [ainsn->insn_reserv_decl->insn_num]->to_state
+ != arc->to_state))
+ {
+ delete_ainsn_from_equiv_class (curr_insn);
+ cyclic_insn_list = insert_ainsn_into_equiv_class (curr_insn,
+ cyclic_insn_list);
+ }
+ curr_insn = next_insn;
+ }
+ while (curr_insn != ainsn);
+}
+
+/* The function processes STATE in order to find equivalent ainsns. */
+static void
+process_state_for_insn_equiv_partition (state)
+ state_t state;
+{
+ arc_t arc;
+ arc_t *insn_arcs_array;
+ int i;
+ vla_ptr_t insn_arcs_vect;
+
+ VLA_PTR_CREATE (insn_arcs_vect, 500, "insn arcs vector");
+ VLA_PTR_EXPAND (insn_arcs_vect, description->insns_num);
+ insn_arcs_array = VLA_PTR_BEGIN (insn_arcs_vect);
+ /* Process insns of the arcs. */
+ for (i = 0; i < description->insns_num; i++)
+ insn_arcs_array [i] = NULL;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ insn_arcs_array [arc->insn->insn_reserv_decl->insn_num] = arc;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ process_insn_equiv_class (arc->insn, insn_arcs_array);
+ VLA_PTR_DELETE (insn_arcs_vect);
+}
+
+/* The function searches for equivalent ainsns of AUTOMATON. */
+static void
+set_insn_equiv_classes (automaton)
+ automaton_t automaton;
+{
+ ainsn_t ainsn;
+ ainsn_t first_insn;
+ ainsn_t curr_insn;
+ ainsn_t cyclic_insn_list;
+ ainsn_t insn_with_same_reservs;
+ int equiv_classes_num;
+
+ /* All insns are included in one equivalence class. */
+ cyclic_insn_list = NULL;
+ for (ainsn = automaton->ainsn_list; ainsn != NULL; ainsn = ainsn->next_ainsn)
+ if (ainsn->first_insn_with_same_reservs)
+ cyclic_insn_list = insert_ainsn_into_equiv_class (ainsn,
+ cyclic_insn_list);
+ /* Process insns in order to make equivalence partition. */
+ pass_states (automaton, process_state_for_insn_equiv_partition);
+ /* Enumerate equiv classes. */
+ for (ainsn = automaton->ainsn_list; ainsn != NULL; ainsn = ainsn->next_ainsn)
+ /* Set undefined value. */
+ ainsn->insn_equiv_class_num = -1;
+ equiv_classes_num = 0;
+ for (ainsn = automaton->ainsn_list; ainsn != NULL; ainsn = ainsn->next_ainsn)
+ if (ainsn->insn_equiv_class_num < 0)
+ {
+ first_insn = ainsn;
+ if (!first_insn->first_insn_with_same_reservs)
+ abort ();
+ first_insn->first_ainsn_with_given_equialence_num = 1;
+ curr_insn = first_insn;
+ do
+ {
+ for (insn_with_same_reservs = curr_insn;
+ insn_with_same_reservs != NULL;
+ insn_with_same_reservs
+ = insn_with_same_reservs->next_same_reservs_insn)
+ insn_with_same_reservs->insn_equiv_class_num = equiv_classes_num;
+ curr_insn = curr_insn->next_equiv_class_insn;
+ }
+ while (curr_insn != first_insn);
+ equiv_classes_num++;
+ }
+ automaton->insn_equiv_classes_num = equiv_classes_num;
+}
+
+\f
+
+/* This page contains code for creating DFA(s) and calls functions
+ building them. */
+
+
+/* The following value is used to prevent floating point overflow for
+ estimating an automaton bound. The value should be less DBL_MAX on
+ the host machine. We use here approximate minimum of maximal
+ double floating point value required by ANSI C standard. It
+ will work for non ANSI sun compiler too. */
+
+#define MAX_FLOATING_POINT_VALUE_FOR_AUTOMATON_BOUND 1.0E37
+
+/* The function estimate size of the single DFA used by PHR (pipeline
+ hazards recognizer). */
+static double
+estimate_one_automaton_bound ()
+{
+ decl_t decl;
+ double one_automaton_estimation_bound;
+ double root_value;
+ int i;
+
+ one_automaton_estimation_bound = 1.0;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ {
+ root_value = exp (log (decl->decl.unit.max_occ_cycle_num + 1.0)
+ / automata_num);
+ if (MAX_FLOATING_POINT_VALUE_FOR_AUTOMATON_BOUND / root_value
+ > one_automaton_estimation_bound)
+ one_automaton_estimation_bound *= root_value;
+ }
+ }
+ return one_automaton_estimation_bound;
+}
+
+/* The function compares unit declarations acoording to their maximal
+ cycle in reservations. */
+static int
+compare_max_occ_cycle_nums (unit_decl_1, unit_decl_2)
+ const void *unit_decl_1;
+ const void *unit_decl_2;
+{
+ if (((*(decl_t *) unit_decl_1)->decl.unit.max_occ_cycle_num)
+ < ((*(decl_t *) unit_decl_2)->decl.unit.max_occ_cycle_num))
+ return 1;
+ else if (((*(decl_t *) unit_decl_1)->decl.unit.max_occ_cycle_num)
+ == ((*(decl_t *) unit_decl_2)->decl.unit.max_occ_cycle_num))
+ return 0;
+ else
+ return -1;
+}
+
+/* The function makes heuristic assigning automata to units. Actually
+ efficacy of the algorithm has been checked yet??? */
+static void
+units_to_automata_heuristic_distr ()
+{
+ double estimation_bound;
+ decl_t decl;
+ decl_t *unit_decl_ptr;
+ int automaton_num;
+ int rest_units_num;
+ double bound_value;
+ vla_ptr_t unit_decls;
+ int i;
+
+ if (description->units_num == 0)
+ return;
+ estimation_bound = estimate_one_automaton_bound ();
+ VLA_PTR_CREATE (unit_decls, 150, "unit decls");
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ VLA_PTR_ADD (unit_decls, decl);
+ }
+ qsort (VLA_PTR_BEGIN (unit_decls), VLA_PTR_LENGTH (unit_decls),
+ sizeof (decl_t), compare_max_occ_cycle_nums);
+ automaton_num = 0;
+ unit_decl_ptr = VLA_PTR_BEGIN (unit_decls);
+ bound_value = (*unit_decl_ptr)->decl.unit.max_occ_cycle_num;
+ (*unit_decl_ptr)->decl.unit.corresponding_automaton_num = automaton_num;
+ for (unit_decl_ptr++;
+ unit_decl_ptr <= (decl_t *) VLA_PTR_LAST (unit_decls);
+ unit_decl_ptr++)
+ {
+ rest_units_num
+ = ((decl_t *) VLA_PTR_LAST (unit_decls) - unit_decl_ptr + 1);
+ if (automata_num - automaton_num - 1 > rest_units_num)
+ abort ();
+ if (automaton_num < automata_num - 1
+ && ((automata_num - automaton_num - 1 == rest_units_num)
+ || (bound_value
+ > (estimation_bound
+ / ((*unit_decl_ptr)->decl.unit.max_occ_cycle_num)))))
+ {
+ bound_value = (*unit_decl_ptr)->decl.unit.max_occ_cycle_num;
+ automaton_num++;
+ }
+ else
+ bound_value *= (*unit_decl_ptr)->decl.unit.max_occ_cycle_num;
+ (*unit_decl_ptr)->decl.unit.corresponding_automaton_num = automaton_num;
+ }
+ if (automaton_num != automata_num - 1)
+ abort ();
+ VLA_PTR_DELETE (unit_decls);
+}
+
+/* The functions creates automaton insns for each automata. Automaton
+ insn is simply insn for given automaton which makes reservation
+ only of units of the automaton. */
+static ainsn_t
+create_ainsns ()
+{
+ decl_t decl;
+ ainsn_t first_ainsn;
+ ainsn_t curr_ainsn;
+ ainsn_t prev_ainsn;
+ int i;
+
+ first_ainsn = NULL;
+ prev_ainsn = NULL;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ {
+ curr_ainsn = create_node (sizeof (struct ainsn));
+ curr_ainsn->insn_reserv_decl = &decl->decl.insn_reserv;
+ curr_ainsn->important_p = FALSE;
+ curr_ainsn->next_ainsn = NULL;
+ if (prev_ainsn == NULL)
+ first_ainsn = curr_ainsn;
+ else
+ prev_ainsn->next_ainsn = curr_ainsn;
+ prev_ainsn = curr_ainsn;
+ }
+ }
+ return first_ainsn;
+}
+
+/* The function assigns automata to units according to constructions
+ `define_automaton' in the description. */
+static void
+units_to_automata_distr ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ {
+ if (decl->decl.unit.automaton_decl == NULL
+ || (decl->decl.unit.automaton_decl->corresponding_automaton
+ == NULL))
+ /* Distribute to the first automaton. */
+ decl->decl.unit.corresponding_automaton_num = 0;
+ else
+ decl->decl.unit.corresponding_automaton_num
+ = (decl->decl.unit.automaton_decl
+ ->corresponding_automaton->automaton_order_num);
+ }
+ }
+}
+
+/* The function creates DFA(s) for fast pipeline hazards recognition
+ after checking and simplifying IR of the description. */
+static void
+create_automata ()
+{
+ automaton_t curr_automaton;
+ automaton_t prev_automaton;
+ decl_t decl;
+ int curr_automaton_num;
+ int i;
+
+ if (automata_num != 0)
+ {
+ units_to_automata_heuristic_distr ();
+ for (prev_automaton = NULL, curr_automaton_num = 0;
+ curr_automaton_num < automata_num;
+ curr_automaton_num++, prev_automaton = curr_automaton)
+ {
+ curr_automaton = create_node (sizeof (struct automaton));
+ curr_automaton->ainsn_list = create_ainsns ();
+ curr_automaton->corresponding_automaton_decl = NULL;
+ curr_automaton->next_automaton = NULL;
+ curr_automaton->automaton_order_num = curr_automaton_num;
+ if (prev_automaton == NULL)
+ description->first_automaton = curr_automaton;
+ else
+ prev_automaton->next_automaton = curr_automaton;
+ }
+ }
+ else
+ {
+ curr_automaton_num = 0;
+ prev_automaton = NULL;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_automaton
+ && decl->decl.automaton.automaton_is_used)
+ {
+ curr_automaton = create_node (sizeof (struct automaton));
+ curr_automaton->ainsn_list = create_ainsns ();
+ curr_automaton->corresponding_automaton_decl
+ = &decl->decl.automaton;
+ curr_automaton->next_automaton = NULL;
+ decl->decl.automaton.corresponding_automaton = curr_automaton;
+ curr_automaton->automaton_order_num = curr_automaton_num;
+ if (prev_automaton == NULL)
+ description->first_automaton = curr_automaton;
+ else
+ prev_automaton->next_automaton = curr_automaton;
+ curr_automaton_num++;
+ prev_automaton = curr_automaton;
+ }
+ }
+ if (curr_automaton_num == 0)
+ {
+ curr_automaton = create_node (sizeof (struct automaton));
+ curr_automaton->ainsn_list = create_ainsns ();
+ curr_automaton->corresponding_automaton_decl = NULL;
+ curr_automaton->next_automaton = NULL;
+ description->first_automaton = curr_automaton;
+ }
+ units_to_automata_distr ();
+ }
+ NDFA_time = create_ticker ();
+ ticker_off (&NDFA_time);
+ NDFA_to_DFA_time = create_ticker ();
+ ticker_off (&NDFA_to_DFA_time);
+ minimize_time = create_ticker ();
+ ticker_off (&minimize_time);
+ equiv_time = create_ticker ();
+ ticker_off (&equiv_time);
+ for (curr_automaton = description->first_automaton;
+ curr_automaton != NULL;
+ curr_automaton = curr_automaton->next_automaton)
+ {
+ if (curr_automaton->corresponding_automaton_decl == NULL)
+ fprintf (stderr, "Create anonymous automaton ...");
+ else
+ fprintf (stderr, "Create automaton `%s'...",
+ curr_automaton->corresponding_automaton_decl->name);
+ create_alt_states (curr_automaton);
+ form_ainsn_with_same_reservs (curr_automaton);
+ build_automaton (curr_automaton);
+ enumerate_states (curr_automaton);
+ ticker_on (&equiv_time);
+ set_insn_equiv_classes (curr_automaton);
+ ticker_off (&equiv_time);
+ fprintf (stderr, "done\n");
+ }
+}
+
+\f
+
+/* This page contains code for forming string representation of
+ regexp. The representation is formed on IR obstack. So you should
+ not work with IR obstack between regexp_representation and
+ finish_regexp_representation calls. */
+
+/* This recursive function forms string representation of regexp
+ (without tailing '\0'). */
+static void
+form_regexp (regexp)
+ regexp_t regexp;
+{
+ int i;
+
+ if (regexp->mode == rm_unit || regexp->mode == rm_reserv)
+ {
+ const char *name = (regexp->mode == rm_unit
+ ? regexp->regexp.unit.name
+ : regexp->regexp.reserv.name);
+
+ obstack_grow (&irp, name, strlen (name));
+ }
+ else if (regexp->mode == rm_sequence)
+ for (i = 0; i < regexp->regexp.sequence.regexps_num; i++)
+ {
+ if (i != 0)
+ obstack_1grow (&irp, ',');
+ form_regexp (regexp->regexp.sequence.regexps [i]);
+ }
+ else if (regexp->mode == rm_allof)
+ {
+ obstack_1grow (&irp, '(');
+ for (i = 0; i < regexp->regexp.allof.regexps_num; i++)
+ {
+ if (i != 0)
+ obstack_1grow (&irp, '+');
+ if (regexp->regexp.allof.regexps[i]->mode == rm_sequence
+ || regexp->regexp.oneof.regexps[i]->mode == rm_oneof)
+ obstack_1grow (&irp, '(');
+ form_regexp (regexp->regexp.allof.regexps [i]);
+ if (regexp->regexp.allof.regexps[i]->mode == rm_sequence
+ || regexp->regexp.oneof.regexps[i]->mode == rm_oneof)
+ obstack_1grow (&irp, ')');
+ }
+ obstack_1grow (&irp, ')');
+ }
+ else if (regexp->mode == rm_oneof)
+ for (i = 0; i < regexp->regexp.oneof.regexps_num; i++)
+ {
+ if (i != 0)
+ obstack_1grow (&irp, '|');
+ if (regexp->regexp.oneof.regexps[i]->mode == rm_sequence)
+ obstack_1grow (&irp, '(');
+ form_regexp (regexp->regexp.oneof.regexps [i]);
+ if (regexp->regexp.oneof.regexps[i]->mode == rm_sequence)
+ obstack_1grow (&irp, ')');
+ }
+ else if (regexp->mode == rm_repeat)
+ {
+ char digits [30];
+
+ if (regexp->regexp.repeat.regexp->mode == rm_sequence
+ || regexp->regexp.repeat.regexp->mode == rm_allof
+ || regexp->regexp.repeat.regexp->mode == rm_oneof)
+ obstack_1grow (&irp, '(');
+ form_regexp (regexp->regexp.repeat.regexp);
+ if (regexp->regexp.repeat.regexp->mode == rm_sequence
+ || regexp->regexp.repeat.regexp->mode == rm_allof
+ || regexp->regexp.repeat.regexp->mode == rm_oneof)
+ obstack_1grow (&irp, ')');
+ sprintf (digits, "*%d", regexp->regexp.repeat.repeat_num);
+ obstack_grow (&irp, digits, strlen (digits));
+ }
+ else if (regexp->mode == rm_nothing)
+ obstack_grow (&irp, NOTHING_NAME, strlen (NOTHING_NAME));
+ else
+ abort ();
+}
+
+/* The function returns string representation of REGEXP on IR
+ obstack. */
+static const char *
+regexp_representation (regexp)
+ regexp_t regexp;
+{
+ form_regexp (regexp);
+ obstack_1grow (&irp, '\0');
+ return obstack_base (&irp);
+}
+
+/* The function frees memory allocated for last formed string
+ representation of regexp. */
+static void
+finish_regexp_representation ()
+{
+ int length = obstack_object_size (&irp);
+
+ obstack_blank_fast (&irp, -length);
+}
+
+\f
+
+/* This page contains code for output PHR (pipeline hazards recognizer). */
+
+/* The function outputs minimal C type which is sufficient for
+ representation numbers in range min_range_value and
+ max_range_value. Because host machine and build machine may be
+ different, we use here minimal values required by ANSI C standard
+ instead of UCHAR_MAX, SHRT_MAX, SHRT_MIN, etc. This is a good
+ approximation. */
+
+static void
+output_range_type (f, min_range_value, max_range_value)
+ FILE *f;
+ long int min_range_value;
+ long int max_range_value;
+{
+ if (min_range_value >= 0 && max_range_value <= 255)
+ fprintf (f, "unsigned char");
+ else if (min_range_value >= -127 && max_range_value <= 127)
+ fprintf (f, "signed char");
+ else if (min_range_value >= 0 && max_range_value <= 65535)
+ fprintf (f, "unsigned short");
+ else if (min_range_value >= -32767 && max_range_value <= 32767)
+ fprintf (f, "short");
+ else
+ fprintf (f, "int");
+}
+
+/* The following macro value is used as value of member
+ `longest_path_length' of state when we are processing path and the
+ state on the path. */
+
+#define ON_THE_PATH -2
+
+/* The following recursive function searches for the length of the
+ longest path starting from STATE which does not contain cycles and
+ `cycle advance' arcs. */
+
+static int
+longest_path_length (state)
+ state_t state;
+{
+ arc_t arc;
+ int length, result;
+
+ if (state->longest_path_length == ON_THE_PATH)
+ /* We don't expect the path cycle here. Our graph may contain
+ only cycles with one state on the path not containing `cycle
+ advance' arcs -- see comment below. */
+ abort ();
+ else if (state->longest_path_length != UNDEFINED_LONGEST_PATH_LENGTH)
+ /* We alreday visited the state. */
+ return state->longest_path_length;
+
+ result = 0;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ /* Ignore cycles containing one state and `cycle advance' arcs. */
+ if (arc->to_state != state
+ && (arc->insn->insn_reserv_decl
+ != &advance_cycle_insn_decl->decl.insn_reserv))
+ {
+ length = longest_path_length (arc->to_state);
+ if (length > result)
+ result = length;
+ }
+ state->longest_path_length = result + 1;
+ return result;
+}
+
+/* The following variable value is value of the corresponding global
+ variable in the automaton based pipeline interface. */
+
+static int max_dfa_issue_rate;
+
+/* The following function processes the longest path length staring
+ from STATE to find MAX_DFA_ISSUE_RATE. */
+
+static void
+process_state_longest_path_length (state)
+ state_t state;
+{
+ int value;
+
+ value = longest_path_length (state);
+ if (value > max_dfa_issue_rate)
+ max_dfa_issue_rate = value;
+}
+
+/* The following nacro value is name of the corresponding global
+ variable in the automaton based pipeline interface. */
+
+#define MAX_DFA_ISSUE_RATE_VAR_NAME "max_dfa_issue_rate"
+
+/* The following function calculates value of the the corresponding
+ global variable and outputs its declaration. */
+
+static void
+output_dfa_max_issue_rate ()
+{
+ automaton_t automaton;
+
+ if (UNDEFINED_LONGEST_PATH_LENGTH == ON_THE_PATH || ON_THE_PATH >= 0)
+ abort ();
+ max_dfa_issue_rate = 0;
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ pass_states (automaton, process_state_longest_path_length);
+ fprintf (output_file, "\nint %s = %d;\n",
+ MAX_DFA_ISSUE_RATE_VAR_NAME, max_dfa_issue_rate);
+}
+
+/* The function outputs all initialization values of VECT with length
+ vect_length. */
+static void
+output_vect (vect, vect_length)
+ vect_el_t *vect;
+ int vect_length;
+{
+ int els_on_line;
+
+ els_on_line = 1;
+ if (vect_length == 0)
+ fprintf (output_file,
+ "0 /* This is dummy el because the vect is empty */");
+ else
+ {
+ do
+ {
+ fprintf (output_file, "%5ld", (long) *vect);
+ vect_length--;
+ if (els_on_line == 10)
+ {
+ els_on_line = 0;
+ fprintf (output_file, ",\n");
+ }
+ else if (vect_length != 0)
+ fprintf (output_file, ", ");
+ els_on_line++;
+ vect++;
+ }
+ while (vect_length != 0);
+ }
+}
+
+/* The following is name of the structure which represents DFA(s) for
+ PHR. */
+#define CHIP_NAME "DFA_chip"
+
+/* The following is name of member which represents state of a DFA for
+ PHR. */
+static void
+output_chip_member_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "automaton_state_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_automaton_state",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* The following is name of temporary variable which stores state of a
+ DFA for PHR. */
+static void
+output_temp_chip_member_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ fprintf (f, "_");
+ output_chip_member_name (f, automaton);
+}
+
+/* This is name of macro value which is code of pseudo_insn
+ representing advancing cpu cycle. Its value is used as internal
+ code unknown insn. */
+#define ADVANCE_CYCLE_VALUE_NAME "DFA__ADVANCE_CYCLE"
+
+/* Output name of translate vector for given automaton. */
+static void
+output_translate_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "translate_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_translate", automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name for simple transition table representation. */
+static void
+output_trans_full_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "transitions_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_transitions",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of comb vector of the transition table for given
+ automaton. */
+static void
+output_trans_comb_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "transitions_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_transitions",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of check vector of the transition table for given
+ automaton. */
+static void
+output_trans_check_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "check_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_check", automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of base vector of the transition table for given
+ automaton. */
+static void
+output_trans_base_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "base_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_base", automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name for simple alternatives number representation. */
+static void
+output_state_alts_full_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "state_alts_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_state_alts",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of comb vector of the alternatives number table for given
+ automaton. */
+static void
+output_state_alts_comb_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "state_alts_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_state_alts",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of check vector of the alternatives number table for given
+ automaton. */
+static void
+output_state_alts_check_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "check_state_alts_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_check_state_alts",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of base vector of the alternatives number table for given
+ automaton. */
+static void
+output_state_alts_base_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "base_state_alts_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_base_state_alts",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of simple min issue delay table representation. */
+static void
+output_min_issue_delay_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "min_issue_delay_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_min_issue_delay",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of deadlock vector for given automaton. */
+static void
+output_dead_lock_vect_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "dead_lock_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_dead_lock", automaton->corresponding_automaton_decl->name);
+}
+
+/* Output name of reserved units table for AUTOMATON into file F. */
+static void
+output_reserved_units_table_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "reserved_units_%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "%s_reserved_units",
+ automaton->corresponding_automaton_decl->name);
+}
+
+/* Name of the PHR interface macro. */
+#define AUTOMATON_STATE_ALTS_MACRO_NAME "AUTOMATON_STATE_ALTS"
+
+/* Name of the PHR interface macro. */
+#define CPU_UNITS_QUERY_MACRO_NAME "CPU_UNITS_QUERY"
+
+/* Names of an internal functions: */
+#define INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME "internal_min_issue_delay"
+
+/* This is external type of DFA(s) state. */
+#define STATE_TYPE_NAME "state_t"
+
+#define INTERNAL_TRANSITION_FUNC_NAME "internal_state_transition"
+
+#define INTERNAL_STATE_ALTS_FUNC_NAME "internal_state_alts"
+
+#define INTERNAL_RESET_FUNC_NAME "internal_reset"
+
+#define INTERNAL_DEAD_LOCK_FUNC_NAME "internal_state_dead_lock_p"
+
+#define INTERNAL_INSN_LATENCY_FUNC_NAME "internal_insn_latency"
+
+/* Name of cache of insn dfa codes. */
+#define DFA_INSN_CODES_VARIABLE_NAME "dfa_insn_codes"
+
+/* Name of length of cache of insn dfa codes. */
+#define DFA_INSN_CODES_LENGTH_VARIABLE_NAME "dfa_insn_codes_length"
+
+/* Names of the PHR interface functions: */
+#define SIZE_FUNC_NAME "state_size"
+
+#define TRANSITION_FUNC_NAME "state_transition"
+
+#define STATE_ALTS_FUNC_NAME "state_alts"
+
+#define MIN_ISSUE_DELAY_FUNC_NAME "min_issue_delay"
+
+#define MIN_INSN_CONFLICT_DELAY_FUNC_NAME "min_insn_conflict_delay"
+
+#define DEAD_LOCK_FUNC_NAME "state_dead_lock_p"
+
+#define RESET_FUNC_NAME "state_reset"
+
+#define INSN_LATENCY_FUNC_NAME "insn_latency"
+
+#define PRINT_RESERVATION_FUNC_NAME "print_reservation"
+
+#define GET_CPU_UNIT_CODE_FUNC_NAME "get_cpu_unit_code"
+
+#define CPU_UNIT_RESERVATION_P_FUNC_NAME "cpu_unit_reservation_p"
+
+#define DFA_START_FUNC_NAME "dfa_start"
+
+#define DFA_FINISH_FUNC_NAME "dfa_finish"
+
+/* Names of parameters of the PHR interface functions. */
+#define STATE_NAME "state"
+
+#define INSN_PARAMETER_NAME "insn"
+
+#define INSN2_PARAMETER_NAME "insn2"
+
+#define CHIP_PARAMETER_NAME "chip"
+
+#define FILE_PARAMETER_NAME "f"
+
+#define CPU_UNIT_NAME_PARAMETER_NAME "cpu_unit_name"
+
+#define CPU_CODE_PARAMETER_NAME "cpu_unit_code"
+
+/* Names of the variables whose values are internal insn code of rtx
+ insn. */
+#define INTERNAL_INSN_CODE_NAME "insn_code"
+
+#define INTERNAL_INSN2_CODE_NAME "insn2_code"
+
+/* Names of temporary variables in some functions. */
+#define TEMPORARY_VARIABLE_NAME "temp"
+
+#define I_VARIABLE_NAME "i"
+
+/* Name of result variable in some functions. */
+#define RESULT_VARIABLE_NAME "res"
+
+/* Name of function (attribute) to translate insn into number of insn
+ alternatives reservation. */
+#define INSN_ALTS_FUNC_NAME "insn_alts"
+
+/* Name of function (attribute) to translate insn into internal insn
+ code. */
+#define INTERNAL_DFA_INSN_CODE_FUNC_NAME "internal_dfa_insn_code"
+
+/* Name of function (attribute) to translate insn into internal insn
+ code with caching. */
+#define DFA_INSN_CODE_FUNC_NAME "dfa_insn_code"
+
+/* Name of function (attribute) to translate insn into internal insn
+ code. */
+#define INSN_DEFAULT_LATENCY_FUNC_NAME "insn_default_latency"
+
+/* Name of function (attribute) to translate insn into internal insn
+ code. */
+#define BYPASS_P_FUNC_NAME "bypass_p"
+
+/* Output C type which is used for representation of codes of states
+ of AUTOMATON. */
+static void
+output_state_member_type (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ output_range_type (f, 0, automaton->achieved_states_num);
+}
+
+/* Output definition of the structure representing current DFA(s)
+ state(s). */
+static void
+output_chip_definitions ()
+{
+ automaton_t automaton;
+
+ fprintf (output_file, "struct %s\n{\n", CHIP_NAME);
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ fprintf (output_file, " ");
+ output_state_member_type (output_file, automaton);
+ fprintf (output_file, " ");
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, ";\n");
+ }
+ fprintf (output_file, "};\n\n");
+#if 0
+ fprintf (output_file, "static struct %s %s;\n\n", CHIP_NAME, CHIP_NAME);
+#endif
+}
+
+
+/* The function outputs translate vector of internal insn code into
+ insn equivalence class number. The equivalence class number is
+ used to access to table and vectors reprewsenting DFA(s). */
+static void
+output_translate_vect (automaton)
+ automaton_t automaton;
+{
+ ainsn_t ainsn;
+ int insn_value;
+ vla_hwint_t translate_vect;
+
+ VLA_HWINT_CREATE (translate_vect, 250, "translate vector");
+ VLA_HWINT_EXPAND (translate_vect, description->insns_num);
+ for (insn_value = 0; insn_value <= description->insns_num; insn_value++)
+ /* Undefined value */
+ VLA_HWINT (translate_vect, insn_value) = automaton->insn_equiv_classes_num;
+ for (ainsn = automaton->ainsn_list; ainsn != NULL; ainsn = ainsn->next_ainsn)
+ VLA_HWINT (translate_vect, ainsn->insn_reserv_decl->insn_num)
+ = ainsn->insn_equiv_class_num;
+ fprintf (output_file,
+ "/* Vector translating external insn codes to internal ones.*/\n");
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, 0, automaton->insn_equiv_classes_num);
+ fprintf (output_file, " ");
+ output_translate_vect_name (output_file, automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (translate_vect),
+ VLA_HWINT_LENGTH (translate_vect));
+ fprintf (output_file, "};\n\n");
+ VLA_HWINT_DELETE (translate_vect);
+}
+
+/* The value in a table state x ainsn -> something which represents
+ undefined value. */
+static int undefined_vect_el_value;
+
+/* The following function returns nonzero value if the best
+ representation of the table is comb vector. */
+static int
+comb_vect_p (tab)
+ state_ainsn_table_t tab;
+{
+ return (2 * VLA_HWINT_LENGTH (tab->full_vect)
+ > 5 * VLA_HWINT_LENGTH (tab->comb_vect));
+}
+
+/* The following function creates new table for AUTOMATON. */
+static state_ainsn_table_t
+create_state_ainsn_table (automaton)
+ automaton_t automaton;
+{
+ state_ainsn_table_t tab;
+ int full_vect_length;
+ int i;
+
+ tab = create_node (sizeof (struct state_ainsn_table));
+ tab->automaton = automaton;
+ VLA_HWINT_CREATE (tab->comb_vect, 10000, "comb vector");
+ VLA_HWINT_CREATE (tab->check_vect, 10000, "check vector");
+ VLA_HWINT_CREATE (tab->base_vect, 1000, "base vector");
+ VLA_HWINT_EXPAND (tab->base_vect, automaton->achieved_states_num);
+ VLA_HWINT_CREATE (tab->full_vect, 10000, "full vector");
+ full_vect_length = (automaton->insn_equiv_classes_num
+ * automaton->achieved_states_num);
+ VLA_HWINT_EXPAND (tab->full_vect, full_vect_length);
+ for (i = 0; i < full_vect_length; i++)
+ VLA_HWINT (tab->full_vect, i) = undefined_vect_el_value;
+ tab->min_base_vect_el_value = 0;
+ tab->max_base_vect_el_value = 0;
+ tab->min_comb_vect_el_value = 0;
+ tab->max_comb_vect_el_value = 0;
+ return tab;
+}
+
+/* The following function outputs the best C representation of the
+ table TAB of given TABLE_NAME. */
+static void
+output_state_ainsn_table (tab, table_name, output_full_vect_name_func,
+ output_comb_vect_name_func,
+ output_check_vect_name_func,
+ output_base_vect_name_func)
+ state_ainsn_table_t tab;
+ char *table_name;
+ void (*output_full_vect_name_func) PARAMS ((FILE *, automaton_t));
+ void (*output_comb_vect_name_func) PARAMS ((FILE *, automaton_t));
+ void (*output_check_vect_name_func) PARAMS ((FILE *, automaton_t));
+ void (*output_base_vect_name_func) PARAMS ((FILE *, automaton_t));
+{
+ if (!comb_vect_p (tab))
+ {
+ fprintf (output_file, "/* Vector for %s. */\n", table_name);
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, tab->min_comb_vect_el_value,
+ tab->max_comb_vect_el_value);
+ fprintf (output_file, " ");
+ (*output_full_vect_name_func) (output_file, tab->automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (tab->full_vect),
+ VLA_HWINT_LENGTH (tab->full_vect));
+ fprintf (output_file, "};\n\n");
+ }
+ else
+ {
+ fprintf (output_file, "/* Comb vector for %s. */\n", table_name);
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, tab->min_comb_vect_el_value,
+ tab->max_comb_vect_el_value);
+ fprintf (output_file, " ");
+ (*output_comb_vect_name_func) (output_file, tab->automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (tab->comb_vect),
+ VLA_HWINT_LENGTH (tab->comb_vect));
+ fprintf (output_file, "};\n\n");
+ fprintf (output_file, "/* Check vector for %s. */\n", table_name);
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, 0, tab->automaton->achieved_states_num);
+ fprintf (output_file, " ");
+ (*output_check_vect_name_func) (output_file, tab->automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (tab->check_vect),
+ VLA_HWINT_LENGTH (tab->check_vect));
+ fprintf (output_file, "};\n\n");
+ fprintf (output_file, "/* Base vector for %s. */\n", table_name);
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, tab->min_base_vect_el_value,
+ tab->max_base_vect_el_value);
+ fprintf (output_file, " ");
+ (*output_base_vect_name_func) (output_file, tab->automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (tab->base_vect),
+ VLA_HWINT_LENGTH (tab->base_vect));
+ fprintf (output_file, "};\n\n");
+ }
+}
+
+/* The following function adds vector with length VECT_LENGTH and
+ elements pointed by VECT to table TAB as its line with number
+ VECT_NUM. */
+static void
+add_vect (tab, vect_num, vect, vect_length)
+ state_ainsn_table_t tab;
+ int vect_num;
+ vect_el_t *vect;
+ int vect_length;
+{
+ int real_vect_length;
+ vect_el_t *comb_vect_start;
+ vect_el_t *check_vect_start;
+ int comb_vect_index;
+ int comb_vect_els_num;
+ int vect_index;
+ int first_unempty_vect_index;
+ int additional_els_num;
+ int no_state_value;
+ vect_el_t vect_el;
+ int i;
+
+ if (vect_length == 0)
+ abort ();
+ real_vect_length = tab->automaton->insn_equiv_classes_num;
+ if (vect [vect_length - 1] == undefined_vect_el_value)
+ abort ();
+ /* Form full vector in the table: */
+ for (i = 0; i < vect_length; i++)
+ VLA_HWINT (tab->full_vect,
+ i + tab->automaton->insn_equiv_classes_num * vect_num)
+ = vect [i];
+ /* Form comb vector in the table: */
+ if (VLA_HWINT_LENGTH (tab->comb_vect) != VLA_HWINT_LENGTH (tab->check_vect))
+ abort ();
+ comb_vect_start = VLA_HWINT_BEGIN (tab->comb_vect);
+ comb_vect_els_num = VLA_HWINT_LENGTH (tab->comb_vect);
+ for (first_unempty_vect_index = 0;
+ first_unempty_vect_index < vect_length;
+ first_unempty_vect_index++)
+ if (vect [first_unempty_vect_index] != undefined_vect_el_value)
+ break;
+ /* Search for the place in comb vect for the inserted vect. */
+ for (comb_vect_index = 0;
+ comb_vect_index < comb_vect_els_num;
+ comb_vect_index++)
+ {
+ for (vect_index = first_unempty_vect_index;
+ vect_index < vect_length
+ && vect_index + comb_vect_index < comb_vect_els_num;
+ vect_index++)
+ if (vect [vect_index] != undefined_vect_el_value
+ && (comb_vect_start [vect_index + comb_vect_index]
+ != undefined_vect_el_value))
+ break;
+ if (vect_index >= vect_length
+ || vect_index + comb_vect_index >= comb_vect_els_num)
+ break;
+ }
+ /* Slot was found. */
+ additional_els_num = comb_vect_index + real_vect_length - comb_vect_els_num;
+ if (additional_els_num < 0)
+ additional_els_num = 0;
+ /* Expand comb and check vectors. */
+ vect_el = undefined_vect_el_value;
+ no_state_value = tab->automaton->achieved_states_num;
+ while (additional_els_num > 0)
+ {
+ VLA_HWINT_ADD (tab->comb_vect, vect_el);
+ VLA_HWINT_ADD (tab->check_vect, no_state_value);
+ additional_els_num--;
+ }
+ comb_vect_start = VLA_HWINT_BEGIN (tab->comb_vect);
+ check_vect_start = VLA_HWINT_BEGIN (tab->check_vect);
+ if (VLA_HWINT_LENGTH (tab->comb_vect)
+ < (size_t) (comb_vect_index + real_vect_length))
+ abort ();
+ /* Fill comb and check vectors. */
+ for (vect_index = 0; vect_index < vect_length; vect_index++)
+ if (vect [vect_index] != undefined_vect_el_value)
+ {
+ if (comb_vect_start [comb_vect_index + vect_index]
+ != undefined_vect_el_value)
+ abort ();
+ comb_vect_start [comb_vect_index + vect_index] = vect [vect_index];
+ if (vect [vect_index] < 0)
+ abort ();
+ if (tab->max_comb_vect_el_value < vect [vect_index])
+ tab->max_comb_vect_el_value = vect [vect_index];
+ if (tab->min_comb_vect_el_value > vect [vect_index])
+ tab->min_comb_vect_el_value = vect [vect_index];
+ check_vect_start [comb_vect_index + vect_index] = vect_num;
+ }
+ if (tab->max_base_vect_el_value < comb_vect_index)
+ tab->max_base_vect_el_value = comb_vect_index;
+ if (tab->min_base_vect_el_value > comb_vect_index)
+ tab->min_base_vect_el_value = comb_vect_index;
+ VLA_HWINT (tab->base_vect, vect_num) = comb_vect_index;
+}
+
+/* Return number of out arcs of STATE. */
+static int
+out_state_arcs_num (state)
+ state_t state;
+{
+ int result;
+ arc_t arc;
+
+ result = 0;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ if (arc->insn == NULL)
+ abort ();
+ if (arc->insn->first_ainsn_with_given_equialence_num)
+ result++;
+ }
+ return result;
+}
+
+/* Compare number of possible transitions from the states. */
+static int
+compare_transition_els_num (state_ptr_1, state_ptr_2)
+ const void *state_ptr_1;
+ const void *state_ptr_2;
+{
+ int transition_els_num_1;
+ int transition_els_num_2;
+
+ transition_els_num_1 = out_state_arcs_num (*(state_t *) state_ptr_1);
+ transition_els_num_2 = out_state_arcs_num (*(state_t *) state_ptr_2);
+ if (transition_els_num_1 < transition_els_num_2)
+ return 1;
+ else if (transition_els_num_1 == transition_els_num_2)
+ return 0;
+ else
+ return -1;
+}
+
+/* The function adds element EL_VALUE to vector VECT for a table state
+ x AINSN. */
+static void
+add_vect_el (vect, ainsn, el_value)
+ vla_hwint_t *vect;
+ ainsn_t ainsn;
+ int el_value;
+{
+ int equiv_class_num;
+ int vect_index;
+
+ if (ainsn == NULL)
+ abort ();
+ equiv_class_num = ainsn->insn_equiv_class_num;
+ for (vect_index = VLA_HWINT_LENGTH (*vect);
+ vect_index <= equiv_class_num;
+ vect_index++)
+ VLA_HWINT_ADD (*vect, undefined_vect_el_value);
+ VLA_HWINT (*vect, equiv_class_num) = el_value;
+}
+
+/* This is for forming vector of states of an automaton. */
+static vla_ptr_t output_states_vect;
+
+/* The function is called by function pass_states. The function adds
+ STATE to `output_states_vect'. */
+static void
+add_states_vect_el (state)
+ state_t state;
+{
+ VLA_PTR_ADD (output_states_vect, state);
+}
+
+/* Form and output vectors (comb, check, base or full vector)
+ representing transition table of AUTOMATON. */
+static void
+output_trans_table (automaton)
+ automaton_t automaton;
+{
+ state_t *state_ptr;
+ arc_t arc;
+ vla_hwint_t transition_vect;
+
+ undefined_vect_el_value = automaton->achieved_states_num;
+ automaton->trans_table = create_state_ainsn_table (automaton);
+ /* Create vect of pointers to states ordered by num of transitions
+ from the state (state with the maximum num is the first). */
+ VLA_PTR_CREATE (output_states_vect, 1500, "output states vector");
+ pass_states (automaton, add_states_vect_el);
+ qsort (VLA_PTR_BEGIN (output_states_vect),
+ VLA_PTR_LENGTH (output_states_vect),
+ sizeof (state_t), compare_transition_els_num);
+ VLA_HWINT_CREATE (transition_vect, 500, "transition vector");
+ for (state_ptr = VLA_PTR_BEGIN (output_states_vect);
+ state_ptr <= (state_t *) VLA_PTR_LAST (output_states_vect);
+ state_ptr++)
+ {
+ VLA_HWINT_NULLIFY (transition_vect);
+ for (arc = first_out_arc (*state_ptr);
+ arc != NULL;
+ arc = next_out_arc (arc))
+ {
+ if (arc->insn == NULL)
+ abort ();
+ if (arc->insn->first_ainsn_with_given_equialence_num)
+ add_vect_el (&transition_vect, arc->insn,
+ arc->to_state->order_state_num);
+ }
+ add_vect (automaton->trans_table, (*state_ptr)->order_state_num,
+ VLA_HWINT_BEGIN (transition_vect),
+ VLA_HWINT_LENGTH (transition_vect));
+ }
+ output_state_ainsn_table
+ (automaton->trans_table, (char *) "state transitions",
+ output_trans_full_vect_name, output_trans_comb_vect_name,
+ output_trans_check_vect_name, output_trans_base_vect_name);
+ VLA_PTR_DELETE (output_states_vect);
+ VLA_HWINT_DELETE (transition_vect);
+}
+
+/* Form and output vectors (comb, check, base or simple vect)
+ representing alts number table of AUTOMATON. The table is state x
+ ainsn -> number of possible alternative reservations by the
+ ainsn. */
+static void
+output_state_alts_table (automaton)
+ automaton_t automaton;
+{
+ state_t *state_ptr;
+ arc_t arc;
+ vla_hwint_t state_alts_vect;
+
+ undefined_vect_el_value = 0; /* no alts when transition is not possible */
+ automaton->state_alts_table = create_state_ainsn_table (automaton);
+ /* Create vect of pointers to states ordered by num of transitions
+ from the state (state with the maximum num is the first). */
+ VLA_PTR_CREATE (output_states_vect, 1500, "output states vector");
+ pass_states (automaton, add_states_vect_el);
+ qsort (VLA_PTR_BEGIN (output_states_vect),
+ VLA_PTR_LENGTH (output_states_vect),
+ sizeof (state_t), compare_transition_els_num);
+ /* Create base, comb, and check vectors. */
+ VLA_HWINT_CREATE (state_alts_vect, 500, "state alts vector");
+ for (state_ptr = VLA_PTR_BEGIN (output_states_vect);
+ state_ptr <= (state_t *) VLA_PTR_LAST (output_states_vect);
+ state_ptr++)
+ {
+ VLA_HWINT_NULLIFY (state_alts_vect);
+ for (arc = first_out_arc (*state_ptr);
+ arc != NULL;
+ arc = next_out_arc (arc))
+ {
+ if (arc->insn == NULL)
+ abort ();
+ if (arc->insn->first_ainsn_with_given_equialence_num)
+ add_vect_el (&state_alts_vect, arc->insn, arc->state_alts);
+ }
+ add_vect (automaton->state_alts_table, (*state_ptr)->order_state_num,
+ VLA_HWINT_BEGIN (state_alts_vect),
+ VLA_HWINT_LENGTH (state_alts_vect));
+ }
+ output_state_ainsn_table
+ (automaton->state_alts_table, (char *) "state insn alternatives",
+ output_state_alts_full_vect_name, output_state_alts_comb_vect_name,
+ output_state_alts_check_vect_name, output_state_alts_base_vect_name);
+ VLA_PTR_DELETE (output_states_vect);
+ VLA_HWINT_DELETE (state_alts_vect);
+}
+
+/* The current number of passing states to find minimal issue delay
+ value for an ainsn and state. */
+static int curr_state_pass_num;
+
+
+/* This recursive function passes states to find minimal issue delay
+ value for AINSN. The state being visited is STATE. */
+static void
+min_issue_delay_pass_states (state, ainsn)
+ state_t state;
+ ainsn_t ainsn;
+{
+ arc_t arc;
+ int min_insn_issue_delay, insn_issue_delay;
+
+ if (state->state_pass_num == curr_state_pass_num)
+ return;
+ state->state_pass_num = curr_state_pass_num;
+ min_insn_issue_delay = state->min_insn_issue_delay = -1;
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ if (arc->insn == ainsn)
+ {
+ min_insn_issue_delay = 0;
+ break;
+ }
+ else
+ {
+ min_issue_delay_pass_states (arc->to_state, ainsn);
+ if (arc->to_state->min_insn_issue_delay != -1)
+ {
+ insn_issue_delay
+ = (arc->to_state->min_insn_issue_delay
+ + (arc->insn->insn_reserv_decl
+ == &advance_cycle_insn_decl->decl.insn_reserv ? 1 : 0));
+ if (min_insn_issue_delay == -1
+ || min_insn_issue_delay > insn_issue_delay)
+ min_insn_issue_delay = insn_issue_delay;
+ }
+ }
+ state->min_insn_issue_delay = min_insn_issue_delay;
+}
+
+/* The function searches minimal issue delay value for AINSN in STATE.
+ The function can return negative can not issue AINSN. We will
+ report about it later. */
+static int
+min_issue_delay (state, ainsn)
+ state_t state;
+ ainsn_t ainsn;
+{
+ curr_state_pass_num++;
+ min_issue_delay_pass_states (state, ainsn);
+ return state->min_insn_issue_delay;
+}
+
+/* The function initiates code for finding minimal issue delay values.
+ It should be called only once. */
+static void
+initiate_min_issue_delay_pass_states ()
+{
+ curr_state_pass_num = 0;
+}
+
+/* Form and output vectors representing minimal issue delay table of
+ AUTOMATON. The table is state x ainsn -> minimal issue delay of
+ the ainsn. */
+static void
+output_min_issue_delay_table (automaton)
+ automaton_t automaton;
+{
+ vla_hwint_t min_issue_delay_vect;
+ vla_hwint_t compressed_min_issue_delay_vect;
+ vect_el_t min_delay;
+ ainsn_t ainsn;
+ state_t *state_ptr;
+ int i;
+
+ /* Create vect of pointers to states ordered by num of transitions
+ from the state (state with the maximum num is the first). */
+ VLA_PTR_CREATE (output_states_vect, 1500, "output states vector");
+ pass_states (automaton, add_states_vect_el);
+ VLA_HWINT_CREATE (min_issue_delay_vect, 1500, "min issue delay vector");
+ VLA_HWINT_EXPAND (min_issue_delay_vect,
+ VLA_HWINT_LENGTH (output_states_vect)
+ * automaton->insn_equiv_classes_num);
+ for (i = 0;
+ i < ((int) VLA_HWINT_LENGTH (output_states_vect)
+ * automaton->insn_equiv_classes_num);
+ i++)
+ VLA_HWINT (min_issue_delay_vect, i) = 0;
+ automaton->max_min_delay = 0;
+ for (state_ptr = VLA_PTR_BEGIN (output_states_vect);
+ state_ptr <= (state_t *) VLA_PTR_LAST (output_states_vect);
+ state_ptr++)
+ {
+ for (ainsn = automaton->ainsn_list;
+ ainsn != NULL;
+ ainsn = ainsn->next_ainsn)
+ if (ainsn->first_ainsn_with_given_equialence_num)
+ {
+ min_delay = min_issue_delay (*state_ptr, ainsn);
+ if (automaton->max_min_delay < min_delay)
+ automaton->max_min_delay = min_delay;
+ VLA_HWINT (min_issue_delay_vect,
+ (*state_ptr)->order_state_num
+ * automaton->insn_equiv_classes_num
+ + ainsn->insn_equiv_class_num) = min_delay;
+ }
+ }
+ fprintf (output_file, "/* Vector of min issue delay of insns.*/\n");
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, 0, automaton->max_min_delay);
+ fprintf (output_file, " ");
+ output_min_issue_delay_vect_name (output_file, automaton);
+ fprintf (output_file, "[] = {\n");
+ /* Compress the vector */
+ if (automaton->max_min_delay < 2)
+ automaton->min_issue_delay_table_compression_factor = 8;
+ else if (automaton->max_min_delay < 4)
+ automaton->min_issue_delay_table_compression_factor = 4;
+ else if (automaton->max_min_delay < 16)
+ automaton->min_issue_delay_table_compression_factor = 2;
+ else
+ automaton->min_issue_delay_table_compression_factor = 1;
+ VLA_HWINT_CREATE (compressed_min_issue_delay_vect, 1500,
+ "compressed min issue delay vector");
+ VLA_HWINT_EXPAND (compressed_min_issue_delay_vect,
+ (VLA_HWINT_LENGTH (min_issue_delay_vect)
+ + automaton->min_issue_delay_table_compression_factor
+ - 1)
+ / automaton->min_issue_delay_table_compression_factor);
+ for (i = 0;
+ i < (int) VLA_HWINT_LENGTH (compressed_min_issue_delay_vect);
+ i++)
+ VLA_HWINT (compressed_min_issue_delay_vect, i) = 0;
+ for (i = 0; i < (int) VLA_HWINT_LENGTH (min_issue_delay_vect); i++)
+ VLA_HWINT (compressed_min_issue_delay_vect,
+ i / automaton->min_issue_delay_table_compression_factor)
+ |= (VLA_HWINT (min_issue_delay_vect, i)
+ << (8 - (i % automaton->min_issue_delay_table_compression_factor
+ + 1)
+ * (8 / automaton->min_issue_delay_table_compression_factor)));
+ output_vect (VLA_HWINT_BEGIN (compressed_min_issue_delay_vect),
+ VLA_HWINT_LENGTH (compressed_min_issue_delay_vect));
+ fprintf (output_file, "};\n\n");
+ VLA_PTR_DELETE (output_states_vect);
+ VLA_HWINT_DELETE (min_issue_delay_vect);
+ VLA_HWINT_DELETE (compressed_min_issue_delay_vect);
+}
+
+#ifndef NDEBUG
+/* Number of states which contains transition only by advancing cpu
+ cycle. */
+static int locked_states_num;
+#endif
+
+/* Form and output vector representing the locked states of
+ AUTOMATON. */
+static void
+output_dead_lock_vect (automaton)
+ automaton_t automaton;
+{
+ state_t *state_ptr;
+ arc_t arc;
+ vla_hwint_t dead_lock_vect;
+
+ /* Create vect of pointers to states ordered by num of
+ transitions from the state (state with the maximum num is the
+ first). */
+ VLA_PTR_CREATE (output_states_vect, 1500, "output states vector");
+ pass_states (automaton, add_states_vect_el);
+ VLA_HWINT_CREATE (dead_lock_vect, 1500, "is dead locked vector");
+ VLA_HWINT_EXPAND (dead_lock_vect, VLA_HWINT_LENGTH (output_states_vect));
+ for (state_ptr = VLA_PTR_BEGIN (output_states_vect);
+ state_ptr <= (state_t *) VLA_PTR_LAST (output_states_vect);
+ state_ptr++)
+ {
+ arc = first_out_arc (*state_ptr);
+ if (arc == NULL)
+ abort ();
+ VLA_HWINT (dead_lock_vect, (*state_ptr)->order_state_num)
+ = (next_out_arc (arc) == NULL
+ && (arc->insn->insn_reserv_decl
+ == &advance_cycle_insn_decl->decl.insn_reserv) ? 1 : 0);
+#ifndef NDEBUG
+ if (VLA_HWINT (dead_lock_vect, (*state_ptr)->order_state_num))
+ locked_states_num++;
+#endif
+ }
+ fprintf (output_file, "/* Vector for locked state flags. */\n");
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, 0, 1);
+ fprintf (output_file, " ");
+ output_dead_lock_vect_name (output_file, automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (dead_lock_vect),
+ VLA_HWINT_LENGTH (dead_lock_vect));
+ fprintf (output_file, "};\n\n");
+ VLA_HWINT_DELETE (dead_lock_vect);
+ VLA_PTR_DELETE (output_states_vect);
+}
+
+/* Form and output vector representing reserved units of the states of
+ AUTOMATON. */
+static void
+output_reserved_units_table (automaton)
+ automaton_t automaton;
+{
+ state_t *curr_state_ptr;
+ vla_hwint_t reserved_units_table;
+ size_t state_byte_size;
+ int i;
+
+ /* Create vect of pointers to states. */
+ VLA_PTR_CREATE (output_states_vect, 1500, "output states vector");
+ pass_states (automaton, add_states_vect_el);
+ /* Create vector. */
+ VLA_HWINT_CREATE (reserved_units_table, 1500, "reserved units vector");
+ state_byte_size = (description->query_units_num + 7) / 8;
+ VLA_HWINT_EXPAND (reserved_units_table,
+ VLA_HWINT_LENGTH (output_states_vect) * state_byte_size);
+ for (i = 0;
+ i < (int) (VLA_HWINT_LENGTH (output_states_vect) * state_byte_size);
+ i++)
+ VLA_HWINT (reserved_units_table, i) = 0;
+ for (curr_state_ptr = VLA_PTR_BEGIN (output_states_vect);
+ curr_state_ptr <= (state_t *) VLA_PTR_LAST (output_states_vect);
+ curr_state_ptr++)
+ {
+ for (i = 0; i < description->units_num; i++)
+ if (units_array [i]->query_p)
+ {
+ if (test_unit_reserv ((*curr_state_ptr)->reservs, 0, i))
+ VLA_HWINT (reserved_units_table,
+ (*curr_state_ptr)->order_state_num * state_byte_size
+ + units_array [i]->query_num / 8)
+ += (1 << (units_array [i]->query_num % 8));
+ }
+ }
+ fprintf (output_file, "/* Vector for reserved units of states. */\n");
+ fprintf (output_file, "static const ");
+ output_range_type (output_file, 0, 255);
+ fprintf (output_file, " ");
+ output_reserved_units_table_name (output_file, automaton);
+ fprintf (output_file, "[] = {\n");
+ output_vect (VLA_HWINT_BEGIN (reserved_units_table),
+ VLA_HWINT_LENGTH (reserved_units_table));
+ fprintf (output_file, "};\n\n");
+ VLA_HWINT_DELETE (reserved_units_table);
+ VLA_PTR_DELETE (output_states_vect);
+}
+
+/* The function outputs all tables representing DFA(s) used for fast
+ pipeline hazards recognition. */
+static void
+output_tables ()
+{
+ automaton_t automaton;
+
+#ifndef NDEBUG
+ locked_states_num = 0;
+#endif
+ initiate_min_issue_delay_pass_states ();
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ output_translate_vect (automaton);
+ output_trans_table (automaton);
+ fprintf (output_file, "\n#if %s\n", AUTOMATON_STATE_ALTS_MACRO_NAME);
+ output_state_alts_table (automaton);
+ fprintf (output_file, "\n#endif /* #if %s */\n\n",
+ AUTOMATON_STATE_ALTS_MACRO_NAME);
+ output_min_issue_delay_table (automaton);
+ output_dead_lock_vect (automaton);
+ if (no_minimization_flag)
+ {
+ fprintf (output_file, "\n#if %s\n\n", CPU_UNITS_QUERY_MACRO_NAME);
+ output_reserved_units_table (automaton);
+ fprintf (output_file, "\n#endif /* #if %s */\n\n",
+ CPU_UNITS_QUERY_MACRO_NAME);
+ }
+ }
+ fprintf (output_file, "\n#define %s %d\n\n", ADVANCE_CYCLE_VALUE_NAME,
+ advance_cycle_insn_decl->decl.insn_reserv.insn_num);
+}
+
+/* The function outputs definition and value of PHR interface variable
+ `max_insn_queue_index' */
+static void
+output_max_insn_queue_index_def ()
+{
+ int i;
+
+ for (i = 0; (1 << i) <= description->max_insn_reserv_cycles; i++)
+ ;
+ if (i < 0)
+ abort ();
+ fprintf (output_file, "\nint max_insn_queue_index = %d;\n\n", (1 << i) - 1);
+}
+
+
+/* The function outputs switch cases for insn reseravtions using
+ function *output_automata_list_code. */
+static void
+output_insn_code_cases (output_automata_list_code)
+ void (*output_automata_list_code) (automata_list_el_t);
+{
+ decl_t decl, decl_2;
+ int i, j;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ decl->decl.insn_reserv.processed_p = FALSE;
+ }
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && !decl->decl.insn_reserv.processed_p)
+ {
+ for (j = i; j < description->decls_num; j++)
+ {
+ decl_2 = description->decls [j];
+ if (decl_2->mode == dm_insn_reserv
+ && (decl_2->decl.insn_reserv.important_automata_list
+ == decl->decl.insn_reserv.important_automata_list))
+ {
+ decl_2->decl.insn_reserv.processed_p = TRUE;
+ fprintf (output_file, " case %d: /* %s */\n",
+ decl_2->decl.insn_reserv.insn_num,
+ decl_2->decl.insn_reserv.name);
+ }
+ }
+ (*output_automata_list_code)
+ (decl->decl.insn_reserv.important_automata_list);
+ }
+ }
+}
+
+
+/* The function outputs a code for evaluation of a minimal delay of
+ issue of insns which have reservations in given AUTOMATA_LIST. */
+static void
+output_automata_list_min_issue_delay_code (automata_list)
+ automata_list_el_t automata_list;
+{
+ automata_list_el_t el;
+ automaton_t automaton;
+
+ for (el = automata_list; el != NULL; el = el->next_automata_list_el)
+ {
+ automaton = el->automaton;
+ fprintf (output_file, "\n %s = ", TEMPORARY_VARIABLE_NAME);
+ output_min_issue_delay_vect_name (output_file, automaton);
+ fprintf (output_file,
+ (automaton->min_issue_delay_table_compression_factor != 1
+ ? " [(" : " ["));
+ output_translate_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s] + ", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, "%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, " * %d", automaton->insn_equiv_classes_num);
+ if (automaton->min_issue_delay_table_compression_factor == 1)
+ fprintf (output_file, "];\n");
+ else
+ {
+ fprintf (output_file, ") / %d];\n",
+ automaton->min_issue_delay_table_compression_factor);
+ fprintf (output_file, " %s = (%s >> (8 - (",
+ TEMPORARY_VARIABLE_NAME, TEMPORARY_VARIABLE_NAME);
+ output_translate_vect_name (output_file, automaton);
+ fprintf
+ (output_file, " [%s] %% %d + 1) * %d)) & %d;\n",
+ INTERNAL_INSN_CODE_NAME,
+ automaton->min_issue_delay_table_compression_factor,
+ 8 / automaton->min_issue_delay_table_compression_factor,
+ (1 << (8 / automaton->min_issue_delay_table_compression_factor))
+ - 1);
+ }
+ if (el == automata_list)
+ fprintf (output_file, " %s = %s;\n",
+ RESULT_VARIABLE_NAME, TEMPORARY_VARIABLE_NAME);
+ else
+ {
+ fprintf (output_file, " if (%s > %s)\n",
+ TEMPORARY_VARIABLE_NAME, RESULT_VARIABLE_NAME);
+ fprintf (output_file, " %s = %s;\n",
+ RESULT_VARIABLE_NAME, TEMPORARY_VARIABLE_NAME);
+ }
+ }
+ fprintf (output_file, " break;\n\n");
+}
+
+/* Output function `internal_min_issue_delay'. */
+static void
+output_internal_min_issue_delay_func ()
+{
+ fprintf (output_file, "static int %s PARAMS ((int, struct %s *));\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file,
+ "static int\n%s (%s, %s)\n\tint %s;\n\tstruct %s *%s;\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_PARAMETER_NAME, INTERNAL_INSN_CODE_NAME, CHIP_NAME,
+ CHIP_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n int %s;\n",
+ TEMPORARY_VARIABLE_NAME, RESULT_VARIABLE_NAME);
+ fprintf (output_file, "\n switch (%s)\n {\n", INTERNAL_INSN_CODE_NAME);
+ output_insn_code_cases (output_automata_list_min_issue_delay_code);
+ fprintf (output_file,
+ "\n default:\n %s = -1;\n break;\n }\n",
+ RESULT_VARIABLE_NAME);
+ fprintf (output_file, " return %s;\n", RESULT_VARIABLE_NAME);
+ fprintf (output_file, "}\n\n");
+}
+
+/* The function outputs a code changing state after issue of insns
+ which have reservations in given AUTOMATA_LIST. */
+static void
+output_automata_list_transition_code (automata_list)
+ automata_list_el_t automata_list;
+{
+ automata_list_el_t el, next_el;
+
+ fprintf (output_file, " {\n");
+ if (automata_list != NULL && automata_list->next_automata_list_el != NULL)
+ for (el = automata_list;; el = next_el)
+ {
+ next_el = el->next_automata_list_el;
+ if (next_el == NULL)
+ break;
+ fprintf (output_file, " ");
+ output_state_member_type (output_file, el->automaton);
+ fprintf (output_file, " ");
+ output_temp_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, ";\n");
+ }
+ for (el = automata_list; el != NULL; el = el->next_automata_list_el)
+ if (comb_vect_p (el->automaton->trans_table))
+ {
+ fprintf (output_file, "\n %s = ", TEMPORARY_VARIABLE_NAME);
+ output_trans_base_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, "] + ");
+ output_translate_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [%s];\n", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, " if (");
+ output_trans_check_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [%s] != %s->",
+ TEMPORARY_VARIABLE_NAME, CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, ")\n");
+ fprintf (output_file, " return %s (%s, %s);\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_PARAMETER_NAME);
+ fprintf (output_file, " else\n");
+ fprintf (output_file, " ");
+ if (el->next_automata_list_el != NULL)
+ output_temp_chip_member_name (output_file, el->automaton);
+ else
+ {
+ fprintf (output_file, "%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ }
+ fprintf (output_file, " = ");
+ output_trans_comb_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [%s];\n", TEMPORARY_VARIABLE_NAME);
+ }
+ else
+ {
+ fprintf (output_file, "\n %s = ", TEMPORARY_VARIABLE_NAME);
+ output_trans_full_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [");
+ output_translate_vect_name (output_file, el->automaton);
+ fprintf (output_file, " [%s] + ", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, "%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, " * %d];\n",
+ el->automaton->insn_equiv_classes_num);
+ fprintf (output_file, " if (%s >= %d)\n",
+ TEMPORARY_VARIABLE_NAME, el->automaton->achieved_states_num);
+ fprintf (output_file, " return %s (%s, %s);\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_PARAMETER_NAME);
+ fprintf (output_file, " else\n ");
+ if (el->next_automata_list_el != NULL)
+ output_temp_chip_member_name (output_file, el->automaton);
+ else
+ {
+ fprintf (output_file, "%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ }
+ fprintf (output_file, " = %s;\n", TEMPORARY_VARIABLE_NAME);
+ }
+ if (automata_list != NULL && automata_list->next_automata_list_el != NULL)
+ for (el = automata_list;; el = next_el)
+ {
+ next_el = el->next_automata_list_el;
+ if (next_el == NULL)
+ break;
+ fprintf (output_file, " %s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, " = ");
+ output_temp_chip_member_name (output_file, el->automaton);
+ fprintf (output_file, ";\n");
+ }
+ fprintf (output_file, " return -1;\n");
+ fprintf (output_file, " }\n");
+}
+
+/* Output function `internal_state_transition'. */
+static void
+output_internal_trans_func ()
+{
+ fprintf (output_file, "static int %s PARAMS ((int, struct %s *));\n",
+ INTERNAL_TRANSITION_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file,
+ "static int\n%s (%s, %s)\n\tint %s;\n\tstruct %s *%s;\n",
+ INTERNAL_TRANSITION_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_PARAMETER_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_NAME, CHIP_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", TEMPORARY_VARIABLE_NAME);
+ fprintf (output_file, "\n switch (%s)\n {\n", INTERNAL_INSN_CODE_NAME);
+ output_insn_code_cases (output_automata_list_transition_code);
+ fprintf (output_file, "\n default:\n return -1;\n }\n");
+ fprintf (output_file, "}\n\n");
+}
+
+/* Output code
+
+ if (insn != 0)
+ {
+ insn_code = dfa_insn_code (insn);
+ if (insn_code > DFA__ADVANCE_CYCLE)
+ return code;
+ }
+ else
+ insn_code = DFA__ADVANCE_CYCLE;
+
+ where insn denotes INSN_NAME, insn_code denotes INSN_CODE_NAME, and
+ code denotes CODE. */
+static void
+output_internal_insn_code_evaluation (insn_name, insn_code_name, code)
+ const char *insn_name;
+ const char *insn_code_name;
+ int code;
+{
+ fprintf (output_file, "\n if (%s != 0)\n {\n", insn_name);
+ fprintf (output_file, " %s = %s (%s);\n", insn_code_name,
+ DFA_INSN_CODE_FUNC_NAME, insn_name);
+ fprintf (output_file, " if (%s > %s)\n return %d;\n",
+ insn_code_name, ADVANCE_CYCLE_VALUE_NAME, code);
+ fprintf (output_file, " }\n else\n %s = %s;\n\n",
+ insn_code_name, ADVANCE_CYCLE_VALUE_NAME);
+}
+
+
+/* The function outputs function `dfa_insn_code'. */
+static void
+output_dfa_insn_code_func ()
+{
+ fprintf (output_file, "#ifdef __GNUC__\n__inline__\n#endif\n");
+ fprintf (output_file, "static int %s PARAMS ((rtx));\n",
+ DFA_INSN_CODE_FUNC_NAME);
+ fprintf (output_file, "static int\n%s (%s)\n\trtx %s;\n",
+ DFA_INSN_CODE_FUNC_NAME, INSN_PARAMETER_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n int %s;\n\n",
+ INTERNAL_INSN_CODE_NAME, TEMPORARY_VARIABLE_NAME);
+ fprintf (output_file, " if (INSN_UID (%s) >= %s)\n {\n",
+ INSN_PARAMETER_NAME, DFA_INSN_CODES_LENGTH_VARIABLE_NAME);
+ fprintf (output_file, " %s = %s;\n %s = 2 * INSN_UID (%s);\n",
+ TEMPORARY_VARIABLE_NAME, DFA_INSN_CODES_LENGTH_VARIABLE_NAME,
+ DFA_INSN_CODES_LENGTH_VARIABLE_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, " %s = xrealloc (%s, %s * sizeof (int));\n",
+ DFA_INSN_CODES_VARIABLE_NAME, DFA_INSN_CODES_VARIABLE_NAME,
+ DFA_INSN_CODES_LENGTH_VARIABLE_NAME);
+ fprintf (output_file,
+ " for (; %s < %s; %s++)\n %s [%s] = -1;\n }\n",
+ TEMPORARY_VARIABLE_NAME, DFA_INSN_CODES_LENGTH_VARIABLE_NAME,
+ TEMPORARY_VARIABLE_NAME, DFA_INSN_CODES_VARIABLE_NAME,
+ TEMPORARY_VARIABLE_NAME);
+ fprintf (output_file, " if ((%s = %s [INSN_UID (%s)]) < 0)\n {\n",
+ INTERNAL_INSN_CODE_NAME, DFA_INSN_CODES_VARIABLE_NAME,
+ INSN_PARAMETER_NAME);
+ fprintf (output_file, " %s = %s (%s);\n", INTERNAL_INSN_CODE_NAME,
+ INTERNAL_DFA_INSN_CODE_FUNC_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, " %s [INSN_UID (%s)] = %s;\n",
+ DFA_INSN_CODES_VARIABLE_NAME, INSN_PARAMETER_NAME,
+ INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, " }\n return %s;\n}\n\n",
+ INTERNAL_INSN_CODE_NAME);
+}
+
+/* The function outputs PHR interface function `state_transition'. */
+static void
+output_trans_func ()
+{
+ fprintf (output_file, "int\n%s (%s, %s)\n\t%s %s;\n\trtx %s;\n",
+ TRANSITION_FUNC_NAME, STATE_NAME, INSN_PARAMETER_NAME,
+ STATE_TYPE_NAME, STATE_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", INTERNAL_INSN_CODE_NAME);
+ output_internal_insn_code_evaluation (INSN_PARAMETER_NAME,
+ INTERNAL_INSN_CODE_NAME, -1);
+ fprintf (output_file, " return %s (%s, %s);\n}\n\n",
+ INTERNAL_TRANSITION_FUNC_NAME, INTERNAL_INSN_CODE_NAME, STATE_NAME);
+}
+
+/* The function outputs a code for evaluation of alternative states
+ number for insns which have reservations in given AUTOMATA_LIST. */
+static void
+output_automata_list_state_alts_code (automata_list)
+ automata_list_el_t automata_list;
+{
+ automata_list_el_t el;
+ automaton_t automaton;
+
+ fprintf (output_file, " {\n");
+ for (el = automata_list; el != NULL; el = el->next_automata_list_el)
+ if (comb_vect_p (el->automaton->state_alts_table))
+ {
+ fprintf (output_file, " int %s;\n", TEMPORARY_VARIABLE_NAME);
+ break;
+ }
+ for (el = automata_list; el != NULL; el = el->next_automata_list_el)
+ {
+ automaton = el->automaton;
+ if (comb_vect_p (automaton->state_alts_table))
+ {
+ fprintf (output_file, "\n %s = ", TEMPORARY_VARIABLE_NAME);
+ output_state_alts_base_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, "] + ");
+ output_translate_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s];\n", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, " if (");
+ output_state_alts_check_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s] != %s->",
+ TEMPORARY_VARIABLE_NAME, CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, ")\n");
+ fprintf (output_file, " return 0;\n");
+ fprintf (output_file, " else\n");
+ fprintf (output_file,
+ (el == automata_list
+ ? " %s = " : " %s += "),
+ RESULT_VARIABLE_NAME);
+ output_state_alts_comb_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s];\n", TEMPORARY_VARIABLE_NAME);
+ }
+ else
+ {
+ fprintf (output_file,
+ (el == automata_list
+ ? "\n %s = " : " %s += "),
+ RESULT_VARIABLE_NAME);
+ output_state_alts_full_vect_name (output_file, automaton);
+ fprintf (output_file, " [");
+ output_translate_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s] + ", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, "%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, " * %d];\n",
+ automaton->insn_equiv_classes_num);
+ }
+ }
+ fprintf (output_file, " break;\n }\n\n");
+}
+
+/* Output function `internal_state_alts'. */
+static void
+output_internal_state_alts_func ()
+{
+ fprintf (output_file, "static int %s PARAMS ((int, struct %s *));\n",
+ INTERNAL_STATE_ALTS_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file,
+ "static int\n%s (%s, %s)\n\tint %s;\n\tstruct %s *%s;\n",
+ INTERNAL_STATE_ALTS_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ CHIP_PARAMETER_NAME, INTERNAL_INSN_CODE_NAME, CHIP_NAME,
+ CHIP_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", RESULT_VARIABLE_NAME);
+ fprintf (output_file, "\n switch (%s)\n {\n", INTERNAL_INSN_CODE_NAME);
+ output_insn_code_cases (output_automata_list_state_alts_code);
+ fprintf (output_file,
+ "\n default:\n %s = 0;\n break;\n }\n",
+ RESULT_VARIABLE_NAME);
+ fprintf (output_file, " return %s;\n", RESULT_VARIABLE_NAME);
+ fprintf (output_file, "}\n\n");
+}
+
+/* The function outputs PHR interface function `state_alts'. */
+static void
+output_state_alts_func ()
+{
+ fprintf (output_file, "int\n%s (%s, %s)\n\t%s %s;\n\trtx %s;\n",
+ STATE_ALTS_FUNC_NAME, STATE_NAME, INSN_PARAMETER_NAME,
+ STATE_TYPE_NAME, STATE_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", INTERNAL_INSN_CODE_NAME);
+ output_internal_insn_code_evaluation (INSN_PARAMETER_NAME,
+ INTERNAL_INSN_CODE_NAME, 0);
+ fprintf (output_file, " return %s (%s, %s);\n}\n\n",
+ INTERNAL_STATE_ALTS_FUNC_NAME, INTERNAL_INSN_CODE_NAME, STATE_NAME);
+}
+
+/* Output function `min_issue_delay'. */
+static void
+output_min_issue_delay_func ()
+{
+ fprintf (output_file, "int\n%s (%s, %s)\n\t%s %s;\n\trtx %s;\n",
+ MIN_ISSUE_DELAY_FUNC_NAME, STATE_NAME, INSN_PARAMETER_NAME,
+ STATE_TYPE_NAME, STATE_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, "\n if (%s != 0)\n {\n", INSN_PARAMETER_NAME);
+ fprintf (output_file, " %s = %s (%s);\n", INTERNAL_INSN_CODE_NAME,
+ DFA_INSN_CODE_FUNC_NAME, INSN_PARAMETER_NAME);
+ fprintf (output_file, " if (%s > %s)\n return 0;\n",
+ INTERNAL_INSN_CODE_NAME, ADVANCE_CYCLE_VALUE_NAME);
+ fprintf (output_file, " }\n else\n %s = %s;\n",
+ INTERNAL_INSN_CODE_NAME, ADVANCE_CYCLE_VALUE_NAME);
+ fprintf (output_file, "\n return %s (%s, %s);\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ STATE_NAME);
+ fprintf (output_file, "}\n\n");
+}
+
+/* Output function `internal_dead_lock'. */
+static void
+output_internal_dead_lock_func ()
+{
+ automaton_t automaton;
+
+ fprintf (output_file, "static int %s PARAMS ((struct %s *));\n",
+ INTERNAL_DEAD_LOCK_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file, "static int\n%s (%s)\n\tstruct %s *%s;\n",
+ INTERNAL_DEAD_LOCK_FUNC_NAME, CHIP_PARAMETER_NAME, CHIP_NAME,
+ CHIP_PARAMETER_NAME);
+ fprintf (output_file, "{\n");
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ fprintf (output_file, " if (");
+ output_dead_lock_vect_name (output_file, automaton);
+ fprintf (output_file, " [%s->", CHIP_PARAMETER_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, "])\n return 1/* TRUE */;\n");
+ }
+ fprintf (output_file, " return 0/* FALSE */;\n}\n\n");
+}
+
+/* The function outputs PHR interface function `state_dead_lock_p'. */
+static void
+output_dead_lock_func ()
+{
+ fprintf (output_file, "int\n%s (%s)\n\t%s %s;\n",
+ DEAD_LOCK_FUNC_NAME, STATE_NAME, STATE_TYPE_NAME, STATE_NAME);
+ fprintf (output_file, "{\n return %s (%s);\n}\n\n",
+ INTERNAL_DEAD_LOCK_FUNC_NAME, STATE_NAME);
+}
+
+/* Output function `internal_reset'. */
+static void
+output_internal_reset_func ()
+{
+ fprintf (output_file, "static void %s PARAMS ((struct %s *));\n",
+ INTERNAL_RESET_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file, "static void\n%s (%s)\n\tstruct %s *%s;\n",
+ INTERNAL_RESET_FUNC_NAME, CHIP_PARAMETER_NAME,
+ CHIP_NAME, CHIP_PARAMETER_NAME);
+ fprintf (output_file, "{\n memset (%s, 0, sizeof (struct %s));\n}\n\n",
+ CHIP_PARAMETER_NAME, CHIP_NAME);
+}
+
+/* The function outputs PHR interface function `state_size'. */
+static void
+output_size_func ()
+{
+ fprintf (output_file, "int\n%s ()\n", SIZE_FUNC_NAME);
+ fprintf (output_file, "{\n return sizeof (struct %s);\n}\n\n", CHIP_NAME);
+}
+
+/* The function outputs PHR interface function `state_reset'. */
+static void
+output_reset_func ()
+{
+ fprintf (output_file, "void\n%s (%s)\n\t %s %s;\n",
+ RESET_FUNC_NAME, STATE_NAME, STATE_TYPE_NAME, STATE_NAME);
+ fprintf (output_file, "{\n %s (%s);\n}\n\n", INTERNAL_RESET_FUNC_NAME,
+ STATE_NAME);
+}
+
+/* Output function `min_insn_conflict_delay'. */
+static void
+output_min_insn_conflict_delay_func ()
+{
+ fprintf (output_file,
+ "int\n%s (%s, %s, %s)\n\t%s %s;\n\trtx %s;\n\trtx %s;\n",
+ MIN_INSN_CONFLICT_DELAY_FUNC_NAME,
+ STATE_NAME, INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME,
+ STATE_TYPE_NAME, STATE_NAME,
+ INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME);
+ fprintf (output_file, "{\n struct %s %s;\n int %s, %s;\n",
+ CHIP_NAME, CHIP_NAME, INTERNAL_INSN_CODE_NAME,
+ INTERNAL_INSN2_CODE_NAME);
+ output_internal_insn_code_evaluation (INSN_PARAMETER_NAME,
+ INTERNAL_INSN_CODE_NAME, 0);
+ output_internal_insn_code_evaluation (INSN2_PARAMETER_NAME,
+ INTERNAL_INSN2_CODE_NAME, 0);
+ fprintf (output_file, " memcpy (&%s, %s, sizeof (%s));\n",
+ CHIP_NAME, STATE_NAME, CHIP_NAME);
+ fprintf (output_file, " %s (&%s);\n", INTERNAL_RESET_FUNC_NAME, CHIP_NAME);
+ fprintf (output_file, " if (%s (%s, &%s) > 0)\n abort ();\n",
+ INTERNAL_TRANSITION_FUNC_NAME, INTERNAL_INSN_CODE_NAME, CHIP_NAME);
+ fprintf (output_file, " return %s (%s, &%s);\n",
+ INTERNAL_MIN_ISSUE_DELAY_FUNC_NAME, INTERNAL_INSN2_CODE_NAME,
+ CHIP_NAME);
+ fprintf (output_file, "}\n\n");
+}
+
+/* Output function `internal_insn_latency'. */
+static void
+output_internal_insn_latency_func ()
+{
+ decl_t decl;
+ struct bypass_decl *bypass;
+ int i;
+
+ fprintf (output_file, "static int %s PARAMS ((int, int, rtx, rtx));\n",
+ INTERNAL_INSN_LATENCY_FUNC_NAME);
+ fprintf (output_file, "static int\n%s (%s, %s, %s, %s)",
+ INTERNAL_INSN_LATENCY_FUNC_NAME, INTERNAL_INSN_CODE_NAME,
+ INTERNAL_INSN2_CODE_NAME, INSN_PARAMETER_NAME,
+ INSN2_PARAMETER_NAME);
+ fprintf (output_file, "\n\tint %s;\n\tint %s;\n",
+ INTERNAL_INSN_CODE_NAME, INTERNAL_INSN2_CODE_NAME);
+ fprintf (output_file,
+ "\trtx %s ATTRIBUTE_UNUSED;\n\trtx %s ATTRIBUTE_UNUSED;\n",
+ INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME);
+ fprintf (output_file, "{\n switch (%s)\n {\n", INTERNAL_INSN_CODE_NAME);
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ {
+ fprintf (output_file, " case %d:\n",
+ decl->decl.insn_reserv.insn_num);
+ if (decl->decl.insn_reserv.bypass_list == NULL)
+ fprintf (output_file, " return (%s != %s ? %d : 0);\n",
+ INTERNAL_INSN2_CODE_NAME, ADVANCE_CYCLE_VALUE_NAME,
+ decl->decl.insn_reserv.default_latency);
+ else
+ {
+ fprintf (output_file, " switch (%s)\n {\n",
+ INTERNAL_INSN2_CODE_NAME);
+ for (bypass = decl->decl.insn_reserv.bypass_list;
+ bypass != NULL;
+ bypass = bypass->next)
+ {
+ fprintf (output_file, " case %d:\n",
+ bypass->in_insn_reserv->insn_num);
+ if (bypass->bypass_guard_name == NULL)
+ fprintf (output_file, " return %d;\n",
+ bypass->latency);
+ else
+ fprintf (output_file,
+ " return (%s (%s, %s) ? %d : %d);\n",
+ bypass->bypass_guard_name, INSN_PARAMETER_NAME,
+ INSN2_PARAMETER_NAME, bypass->latency,
+ decl->decl.insn_reserv.default_latency);
+ }
+ fprintf (output_file, " default:\n");
+ fprintf (output_file,
+ " return (%s != %s ? %d : 0);\n }\n",
+ INTERNAL_INSN2_CODE_NAME, ADVANCE_CYCLE_VALUE_NAME,
+ decl->decl.insn_reserv.default_latency);
+
+ }
+ }
+ }
+ fprintf (output_file, " default:\n return 0;\n }\n}\n\n");
+}
+
+/* The function outputs PHR interface function `insn_latency'. */
+static void
+output_insn_latency_func ()
+{
+ fprintf (output_file, "int\n%s (%s, %s)\n\trtx %s;\n\trtx %s;\n",
+ INSN_LATENCY_FUNC_NAME, INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME,
+ INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s, %s;\n",
+ INTERNAL_INSN_CODE_NAME, INTERNAL_INSN2_CODE_NAME);
+ output_internal_insn_code_evaluation (INSN_PARAMETER_NAME,
+ INTERNAL_INSN_CODE_NAME, 0);
+ output_internal_insn_code_evaluation (INSN2_PARAMETER_NAME,
+ INTERNAL_INSN2_CODE_NAME, 0);
+ fprintf (output_file, " return %s (%s, %s, %s, %s);\n}\n\n",
+ INTERNAL_INSN_LATENCY_FUNC_NAME,
+ INTERNAL_INSN_CODE_NAME, INTERNAL_INSN2_CODE_NAME,
+ INSN_PARAMETER_NAME, INSN2_PARAMETER_NAME);
+}
+
+/* The function outputs PHR interface function `print_reservation'. */
+static void
+output_print_reservation_func ()
+{
+ decl_t decl;
+ int i;
+
+ fprintf (output_file, "void\n%s (%s, %s)\n\tFILE *%s;\n\trtx %s;\n",
+ PRINT_RESERVATION_FUNC_NAME, FILE_PARAMETER_NAME,
+ INSN_PARAMETER_NAME, FILE_PARAMETER_NAME,
+ INSN_PARAMETER_NAME);
+ fprintf (output_file, "{\n int %s;\n", INTERNAL_INSN_CODE_NAME);
+ fprintf (output_file, "\n if (%s != 0)\n {\n", INSN_PARAMETER_NAME);
+ fprintf (output_file, " %s = %s (%s);\n",
+ INTERNAL_INSN_CODE_NAME, DFA_INSN_CODE_FUNC_NAME,
+ INSN_PARAMETER_NAME);
+ fprintf (output_file, " if (%s > %s)\n",
+ INTERNAL_INSN_CODE_NAME, ADVANCE_CYCLE_VALUE_NAME);
+ fprintf (output_file, " {\n fprintf (%s, \"%s\");\n",
+ FILE_PARAMETER_NAME, NOTHING_NAME);
+ fprintf (output_file, " return;\n }\n");
+ fprintf (output_file, " }\n else\n");
+ fprintf (output_file,
+ " {\n fprintf (%s, \"%s\");\n return;\n }\n",
+ FILE_PARAMETER_NAME, NOTHING_NAME);
+ fprintf (output_file, " switch (%s)\n {\n", INTERNAL_INSN_CODE_NAME);
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ {
+ fprintf (output_file,
+ " case %d:\n", decl->decl.insn_reserv.insn_num);
+ fprintf (output_file,
+ " fprintf (%s, \"%s\");\n break;\n",
+ FILE_PARAMETER_NAME,
+ regexp_representation (decl->decl.insn_reserv.regexp));
+ finish_regexp_representation ();
+ }
+ }
+ fprintf (output_file, " default:\n fprintf (%s, \"%s\");\n }\n",
+ FILE_PARAMETER_NAME, NOTHING_NAME);
+ fprintf (output_file, "}\n\n");
+}
+
+/* The following function is used to sort unit declaration by their
+ names. */
+static int
+units_cmp (unit1, unit2)
+ const void *unit1, *unit2;
+{
+ const struct unit_decl *u1 = *(struct unit_decl **) unit1;
+ const struct unit_decl *u2 = *(struct unit_decl **) unit2;
+
+ return strcmp (u1->name, u2->name);
+}
+
+/* The following macro value is name of struct containing unit name
+ and unit code. */
+#define NAME_CODE_STRUCT_NAME "name_code"
+
+/* The following macro value is name of table of struct name_code. */
+#define NAME_CODE_TABLE_NAME "name_code_table"
+
+/* The following macro values are member names for struct name_code. */
+#define NAME_MEMBER_NAME "name"
+#define CODE_MEMBER_NAME "code"
+
+/* The following macro values are local variable names for function
+ `get_cpu_unit_code'. */
+#define CMP_VARIABLE_NAME "cmp"
+#define LOW_VARIABLE_NAME "l"
+#define MIDDLE_VARIABLE_NAME "m"
+#define HIGH_VARIABLE_NAME "h"
+
+/* The following function outputs function to obtain internal cpu unit
+ code by the cpu unit name. */
+static void
+output_get_cpu_unit_code_func ()
+{
+ int i;
+ struct unit_decl **units;
+
+ fprintf (output_file, "int\n%s (%s)\n\tconst char *%s;\n",
+ GET_CPU_UNIT_CODE_FUNC_NAME, CPU_UNIT_NAME_PARAMETER_NAME,
+ CPU_UNIT_NAME_PARAMETER_NAME);
+ fprintf (output_file, "{\n struct %s {const char *%s; int %s;};\n",
+ NAME_CODE_STRUCT_NAME, NAME_MEMBER_NAME, CODE_MEMBER_NAME);
+ fprintf (output_file, " int %s, %s, %s, %s;\n", CMP_VARIABLE_NAME,
+ LOW_VARIABLE_NAME, MIDDLE_VARIABLE_NAME, HIGH_VARIABLE_NAME);
+ fprintf (output_file, " static struct %s %s [] =\n {\n",
+ NAME_CODE_STRUCT_NAME, NAME_CODE_TABLE_NAME);
+ units = (struct unit_decl **) xmalloc (sizeof (struct unit_decl *)
+ * description->units_num);
+ memcpy (units, units_array,
+ sizeof (struct unit_decl *) * description->units_num);
+ qsort (units, description->units_num,
+ sizeof (struct unit_decl *), units_cmp);
+ for (i = 0; i < description->units_num; i++)
+ if (units [i]->query_p)
+ fprintf (output_file, " {\"%s\", %d},\n",
+ units[i]->name, units[i]->query_num);
+ fprintf (output_file, " };\n\n");
+ fprintf (output_file, " /* The following is binary search: */\n");
+ fprintf (output_file, " %s = 0;\n", LOW_VARIABLE_NAME);
+ fprintf (output_file, " %s = sizeof (%s) / sizeof (struct %s) - 1;\n",
+ HIGH_VARIABLE_NAME, NAME_CODE_TABLE_NAME, NAME_CODE_STRUCT_NAME);
+ fprintf (output_file, " while (%s <= %s)\n {\n",
+ LOW_VARIABLE_NAME, HIGH_VARIABLE_NAME);
+ fprintf (output_file, " %s = (%s + %s) / 2;\n",
+ MIDDLE_VARIABLE_NAME, LOW_VARIABLE_NAME, HIGH_VARIABLE_NAME);
+ fprintf (output_file, " %s = strcmp (%s, %s [%s].%s);\n",
+ CMP_VARIABLE_NAME, CPU_UNIT_NAME_PARAMETER_NAME,
+ NAME_CODE_TABLE_NAME, MIDDLE_VARIABLE_NAME, NAME_MEMBER_NAME);
+ fprintf (output_file, " if (%s < 0)\n", CMP_VARIABLE_NAME);
+ fprintf (output_file, " %s = %s - 1;\n",
+ HIGH_VARIABLE_NAME, MIDDLE_VARIABLE_NAME);
+ fprintf (output_file, " else if (%s > 0)\n", CMP_VARIABLE_NAME);
+ fprintf (output_file, " %s = %s + 1;\n",
+ LOW_VARIABLE_NAME, MIDDLE_VARIABLE_NAME);
+ fprintf (output_file, " else\n");
+ fprintf (output_file, " return %s [%s].%s;\n }\n",
+ NAME_CODE_TABLE_NAME, MIDDLE_VARIABLE_NAME, CODE_MEMBER_NAME);
+ fprintf (output_file, " return -1;\n}\n\n");
+ free (units);
+}
+
+/* The following function outputs function to check reservation of cpu
+ unit (its internal code will be passed as the function argument) in
+ given cpu state. */
+static void
+output_cpu_unit_reservation_p ()
+{
+ automaton_t automaton;
+
+ fprintf (output_file, "int\n%s (%s, %s)\n\t%s %s;\n\tint %s;\n",
+ CPU_UNIT_RESERVATION_P_FUNC_NAME, STATE_NAME,
+ CPU_CODE_PARAMETER_NAME, STATE_TYPE_NAME, STATE_NAME,
+ CPU_CODE_PARAMETER_NAME);
+ fprintf (output_file, "{\n if (%s < 0 || %s >= %d)\n abort ();\n",
+ CPU_CODE_PARAMETER_NAME, CPU_CODE_PARAMETER_NAME,
+ description->query_units_num);
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ fprintf (output_file, " if ((");
+ output_reserved_units_table_name (output_file, automaton);
+ fprintf (output_file, " [((struct %s *) %s)->", CHIP_NAME, STATE_NAME);
+ output_chip_member_name (output_file, automaton);
+ fprintf (output_file, " * %d + %s / 8] >> (%s %% 8)) & 1)\n",
+ (description->query_units_num + 7) / 8,
+ CPU_CODE_PARAMETER_NAME, CPU_CODE_PARAMETER_NAME);
+ fprintf (output_file, " return 1;\n");
+ }
+ fprintf (output_file, " return 0;\n}\n\n");
+}
+
+/* The function outputs PHR interface function `dfa_start'. */
+static void
+output_dfa_start_func ()
+{
+ fprintf (output_file,
+ "void\n%s ()\n{\n int %s;\n\n %s = get_max_uid ();\n",
+ DFA_START_FUNC_NAME, I_VARIABLE_NAME,
+ DFA_INSN_CODES_LENGTH_VARIABLE_NAME);
+ fprintf (output_file, " %s = (int *) xmalloc (%s * sizeof (int));\n",
+ DFA_INSN_CODES_VARIABLE_NAME, DFA_INSN_CODES_LENGTH_VARIABLE_NAME);
+ fprintf (output_file,
+ " for (%s = 0; %s < %s; %s++)\n %s [%s] = -1;\n}\n\n",
+ I_VARIABLE_NAME, I_VARIABLE_NAME,
+ DFA_INSN_CODES_LENGTH_VARIABLE_NAME, I_VARIABLE_NAME,
+ DFA_INSN_CODES_VARIABLE_NAME, I_VARIABLE_NAME);
+}
+
+/* The function outputs PHR interface function `dfa_finish'. */
+static void
+output_dfa_finish_func ()
+{
+ fprintf (output_file, "void\n%s ()\n{\n free (%s);\n}\n\n",
+ DFA_FINISH_FUNC_NAME, DFA_INSN_CODES_VARIABLE_NAME);
+}
+
+\f
+
+/* The page contains code for output description file (readable
+ representation of original description and generated DFA(s). */
+
+/* The function outputs string representation of IR reservation. */
+static void
+output_regexp (regexp)
+ regexp_t regexp;
+{
+ fprintf (output_description_file, "%s", regexp_representation (regexp));
+ finish_regexp_representation ();
+}
+
+/* Output names of units in LIST separated by comma. */
+static void
+output_unit_set_el_list (list)
+ unit_set_el_t list;
+{
+ unit_set_el_t el;
+
+ for (el = list; el != NULL; el = el->next_unit_set_el)
+ {
+ if (el != list)
+ fprintf (output_description_file, ",");
+ fprintf (output_description_file, "%s", el->unit_decl->name);
+ }
+}
+
+/* The function outputs string representation of IR define_reservation
+ and define_insn_reservation. */
+static void
+output_description ()
+{
+ decl_t decl;
+ int i;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit)
+ {
+ if (decl->decl.unit.excl_list != NULL)
+ {
+ fprintf (output_description_file, "unit %s exlusion_set: ",
+ decl->decl.unit.name);
+ output_unit_set_el_list (decl->decl.unit.excl_list);
+ fprintf (output_description_file, "\n");
+ }
+ if (decl->decl.unit.presence_list != NULL)
+ {
+ fprintf (output_description_file, "unit %s presence_set: ",
+ decl->decl.unit.name);
+ output_unit_set_el_list (decl->decl.unit.presence_list);
+ fprintf (output_description_file, "\n");
+ }
+ if (decl->decl.unit.absence_list != NULL)
+ {
+ fprintf (output_description_file, "unit %s absence_set: ",
+ decl->decl.unit.name);
+ output_unit_set_el_list (decl->decl.unit.absence_list);
+ fprintf (output_description_file, "\n");
+ }
+ }
+ }
+ fprintf (output_description_file, "\n");
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_reserv)
+ {
+ fprintf (output_description_file, "reservation ");
+ fprintf (output_description_file, decl->decl.reserv.name);
+ fprintf (output_description_file, ": ");
+ output_regexp (decl->decl.reserv.regexp);
+ fprintf (output_description_file, "\n");
+ }
+ else if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ {
+ fprintf (output_description_file, "insn reservation %s ",
+ decl->decl.insn_reserv.name);
+ print_rtl (output_description_file, decl->decl.insn_reserv.condexp);
+ fprintf (output_description_file, ": ");
+ output_regexp (decl->decl.insn_reserv.regexp);
+ fprintf (output_description_file, "\n");
+ }
+ else if (decl->mode == dm_bypass)
+ fprintf (output_description_file, "bypass %d %s %s\n",
+ decl->decl.bypass.latency, decl->decl.bypass.out_insn_name,
+ decl->decl.bypass.in_insn_name);
+ }
+ fprintf (output_description_file, "\n\f\n");
+}
+
+/* The function outputs name of AUTOMATON. */
+static void
+output_automaton_name (f, automaton)
+ FILE *f;
+ automaton_t automaton;
+{
+ if (automaton->corresponding_automaton_decl == NULL)
+ fprintf (f, "#%d", automaton->automaton_order_num);
+ else
+ fprintf (f, "`%s'", automaton->corresponding_automaton_decl->name);
+}
+
+/* Maximal length of line for pretty printing into description
+ file. */
+#define MAX_LINE_LENGTH 70
+
+/* The function outputs units name belonging to AUTOMATON. */
+static void
+output_automaton_units (automaton)
+ automaton_t automaton;
+{
+ decl_t decl;
+ char *name;
+ int curr_line_length;
+ int there_is_an_automaton_unit;
+ int i;
+
+ fprintf (output_description_file, "\n Coresponding units:\n");
+ fprintf (output_description_file, " ");
+ curr_line_length = 4;
+ there_is_an_automaton_unit = 0;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_unit
+ && (decl->decl.unit.corresponding_automaton_num
+ == automaton->automaton_order_num))
+ {
+ there_is_an_automaton_unit = 1;
+ name = decl->decl.unit.name;
+ if (curr_line_length + strlen (name) + 1 > MAX_LINE_LENGTH )
+ {
+ curr_line_length = strlen (name) + 4;
+ fprintf (output_description_file, "\n ");
+ }
+ else
+ {
+ curr_line_length += strlen (name) + 1;
+ fprintf (output_description_file, " ");
+ }
+ fprintf (output_description_file, name);
+ }
+ }
+ if (!there_is_an_automaton_unit)
+ fprintf (output_description_file, "<None>");
+ fprintf (output_description_file, "\n\n");
+}
+
+/* The following variable is used for forming array of all possible cpu unit
+ reservations described by the current DFA state. */
+static vla_ptr_t state_reservs;
+
+/* The function forms `state_reservs' for STATE. */
+static void
+add_state_reservs (state)
+ state_t state;
+{
+ alt_state_t curr_alt_state;
+ reserv_sets_t reservs;
+
+ if (state->component_states != NULL)
+ for (curr_alt_state = state->component_states;
+ curr_alt_state != NULL;
+ curr_alt_state = curr_alt_state->next_sorted_alt_state)
+ add_state_reservs (curr_alt_state->state);
+ else
+ {
+ reservs = state->reservs;
+ VLA_PTR_ADD (state_reservs, reservs);
+ }
+}
+
+/* The function outputs readable represenatation of all out arcs of
+ STATE. */
+static void
+output_state_arcs (state)
+ state_t state;
+{
+ arc_t arc;
+ ainsn_t ainsn;
+ char *insn_name;
+ int curr_line_length;
+
+ for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
+ {
+ ainsn = arc->insn;
+ if (!ainsn->first_insn_with_same_reservs)
+ abort ();
+ fprintf (output_description_file, " ");
+ curr_line_length = 7;
+ fprintf (output_description_file, "%2d: ", ainsn->insn_equiv_class_num);
+ do
+ {
+ insn_name = ainsn->insn_reserv_decl->name;
+ if (curr_line_length + strlen (insn_name) > MAX_LINE_LENGTH)
+ {
+ if (ainsn != arc->insn)
+ {
+ fprintf (output_description_file, ",\n ");
+ curr_line_length = strlen (insn_name) + 6;
+ }
+ else
+ curr_line_length += strlen (insn_name);
+ }
+ else
+ {
+ curr_line_length += strlen (insn_name);
+ if (ainsn != arc->insn)
+ {
+ curr_line_length += 2;
+ fprintf (output_description_file, ", ");
+ }
+ }
+ fprintf (output_description_file, insn_name);
+ ainsn = ainsn->next_same_reservs_insn;
+ }
+ while (ainsn != NULL);
+ fprintf (output_description_file, " %d (%d)\n",
+ arc->to_state->order_state_num, arc->state_alts);
+ }
+ fprintf (output_description_file, "\n");
+}
+
+/* The following function is used for sorting possible cpu unit
+ reservation of a DFA state. */
+static int
+state_reservs_cmp (reservs_ptr_1, reservs_ptr_2)
+ const void *reservs_ptr_1;
+ const void *reservs_ptr_2;
+{
+ return reserv_sets_cmp (*(reserv_sets_t *) reservs_ptr_1,
+ *(reserv_sets_t *) reservs_ptr_2);
+}
+
+/* The following function is used for sorting possible cpu unit
+ reservation of a DFA state. */
+static void
+remove_state_duplicate_reservs ()
+{
+ reserv_sets_t *reservs_ptr;
+ reserv_sets_t *last_formed_reservs_ptr;
+
+ last_formed_reservs_ptr = NULL;
+ for (reservs_ptr = VLA_PTR_BEGIN (state_reservs);
+ reservs_ptr <= (reserv_sets_t *) VLA_PTR_LAST (state_reservs);
+ reservs_ptr++)
+ if (last_formed_reservs_ptr == NULL)
+ last_formed_reservs_ptr = reservs_ptr;
+ else if (reserv_sets_cmp (*last_formed_reservs_ptr, *reservs_ptr) != 0)
+ {
+ ++last_formed_reservs_ptr;
+ *last_formed_reservs_ptr = *reservs_ptr;
+ }
+ VLA_PTR_SHORTEN (state_reservs, reservs_ptr - last_formed_reservs_ptr - 1);
+}
+
+/* The following function output readable representation of DFA(s)
+ state used for fast recognition of pipeline hazards. State is
+ described by possible (current and scehduled) cpu unit
+ reservations. */
+static void
+output_state (state)
+ state_t state;
+{
+ reserv_sets_t *reservs_ptr;
+
+ VLA_PTR_CREATE (state_reservs, 150, "state reservations");
+ fprintf (output_description_file, " State #%d", state->order_state_num);
+ fprintf (output_description_file,
+ state->new_cycle_p ? " (new cycle)\n" : "\n");
+ add_state_reservs (state);
+ qsort (VLA_PTR_BEGIN (state_reservs), VLA_PTR_LENGTH (state_reservs),
+ sizeof (reserv_sets_t), state_reservs_cmp);
+ remove_state_duplicate_reservs ();
+ for (reservs_ptr = VLA_PTR_BEGIN (state_reservs);
+ reservs_ptr <= (reserv_sets_t *) VLA_PTR_LAST (state_reservs);
+ reservs_ptr++)
+ {
+ fprintf (output_description_file, " ");
+ output_reserv_sets (output_description_file, *reservs_ptr);
+ fprintf (output_description_file, "\n");
+ }
+ fprintf (output_description_file, "\n");
+ output_state_arcs (state);
+ VLA_PTR_DELETE (state_reservs);
+}
+
+/* The following function output readable representation of
+ DFAs used for fast recognition of pipeline hazards. */
+static void
+output_automaton_descriptions ()
+{
+ automaton_t automaton;
+
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ fprintf (output_description_file, "\nAutomaton ");
+ output_automaton_name (output_description_file, automaton);
+ fprintf (output_description_file, "\n");
+ output_automaton_units (automaton);
+ pass_states (automaton, output_state);
+ }
+}
+
+\f
+
+/* The page contains top level function for generation DFA(s) used for
+ PHR. */
+
+/* The function outputs statistics about work of different phases of
+ DFA generator. */
+static void
+output_statistics (f)
+ FILE *f;
+{
+ automaton_t automaton;
+#ifndef NDEBUG
+ int transition_comb_vect_els = 0;
+ int transition_full_vect_els = 0;
+ int state_alts_comb_vect_els = 0;
+ int state_alts_full_vect_els = 0;
+ int min_issue_delay_vect_els = 0;
+#endif
+
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ fprintf (f, "\nAutomaton ");
+ output_automaton_name (f, automaton);
+ fprintf (f, "\n %5d NDFA states, %5d NDFA arcs\n",
+ automaton->NDFA_states_num, automaton->NDFA_arcs_num);
+ fprintf (f, " %5d DFA states, %5d DFA arcs\n",
+ automaton->DFA_states_num, automaton->DFA_arcs_num);
+ if (!no_minimization_flag)
+ fprintf (f, " %5d minimal DFA states, %5d minimal DFA arcs\n",
+ automaton->minimal_DFA_states_num,
+ automaton->minimal_DFA_arcs_num);
+ fprintf (f, " %5d all insns %5d insn equivalence classes\n",
+ description->insns_num, automaton->insn_equiv_classes_num);
+#ifndef NDEBUG
+ fprintf
+ (f, "%5ld transition comb vector els, %5ld trans table els: %s\n",
+ (long) VLA_HWINT_LENGTH (automaton->trans_table->comb_vect),
+ (long) VLA_HWINT_LENGTH (automaton->trans_table->full_vect),
+ (comb_vect_p (automaton->trans_table)
+ ? "use comb vect" : "use simple vect"));
+ fprintf
+ (f, "%5ld state alts comb vector els, %5ld state alts table els: %s\n",
+ (long) VLA_HWINT_LENGTH (automaton->state_alts_table->comb_vect),
+ (long) VLA_HWINT_LENGTH (automaton->state_alts_table->full_vect),
+ (comb_vect_p (automaton->state_alts_table)
+ ? "use comb vect" : "use simple vect"));
+ fprintf
+ (f, "%5ld min delay table els, compression factor %d\n",
+ (long) automaton->DFA_states_num * automaton->insn_equiv_classes_num,
+ automaton->min_issue_delay_table_compression_factor);
+ transition_comb_vect_els
+ += VLA_HWINT_LENGTH (automaton->trans_table->comb_vect);
+ transition_full_vect_els
+ += VLA_HWINT_LENGTH (automaton->trans_table->full_vect);
+ state_alts_comb_vect_els
+ += VLA_HWINT_LENGTH (automaton->state_alts_table->comb_vect);
+ state_alts_full_vect_els
+ += VLA_HWINT_LENGTH (automaton->state_alts_table->full_vect);
+ min_issue_delay_vect_els
+ += automaton->DFA_states_num * automaton->insn_equiv_classes_num;
+#endif
+ }
+#ifndef NDEBUG
+ fprintf (f, "\n%5d all allocated states, %5d all allocated arcs\n",
+ allocated_states_num, allocated_arcs_num);
+ fprintf (f, "%5d all allocated alternative states\n",
+ allocated_alt_states_num);
+ fprintf (f, "%5d all transition comb vector els, %5d all trans table els\n",
+ transition_comb_vect_els, transition_full_vect_els);
+ fprintf
+ (f, "%5d all state alts comb vector els, %5d all state alts table els\n",
+ state_alts_comb_vect_els, state_alts_full_vect_els);
+ fprintf (f, "%5d all min delay table els\n", min_issue_delay_vect_els);
+ fprintf (f, "%5d locked states num\n", locked_states_num);
+#endif
+}
+
+/* The function output times of work of different phases of DFA
+ generator. */
+static void
+output_time_statistics (f)
+ FILE *f;
+{
+ fprintf (f, "\n transformation: ");
+ print_active_time (f, transform_time);
+ fprintf (f, (!ndfa_flag ? ", building DFA: " : ", building NDFA: "));
+ print_active_time (f, NDFA_time);
+ if (ndfa_flag)
+ {
+ fprintf (f, ", NDFA -> DFA: ");
+ print_active_time (f, NDFA_to_DFA_time);
+ }
+ fprintf (f, "\n DFA minimization: ");
+ print_active_time (f, minimize_time);
+ fprintf (f, ", making insn equivalence: ");
+ print_active_time (f, equiv_time);
+ fprintf (f, "\n all automaton generation: ");
+ print_active_time (f, automaton_generation_time);
+ fprintf (f, ", output: ");
+ print_active_time (f, output_time);
+ fprintf (f, "\n");
+}
+
+/* The function generates DFA (deterministic finate state automaton)
+ for fast recognition of pipeline hazards. No errors during
+ checking must be fixed before this function call. */
+static void
+generate ()
+{
+ automata_num = split_argument;
+ if (description->units_num < automata_num)
+ automata_num = description->units_num;
+ initiate_states ();
+ initiate_arcs ();
+ initiate_automata_lists ();
+ initiate_pass_states ();
+ initiate_excl_sets ();
+ initiate_presence_absence_sets ();
+ automaton_generation_time = create_ticker ();
+ transform_time = create_ticker ();
+ add_advance_cycle_insn_decl ();
+ fprintf (stderr, "Reservation transformation...");
+ fflush (stderr);
+ transform_insn_regexps ();
+ fprintf (stderr, "done\n");
+ ticker_off (&transform_time);
+ fflush (stderr);
+ create_automata ();
+ ticker_off (&automaton_generation_time);
+}
+
+\f
+
+/* The following function creates attribute which order number of insn
+ in pipeline hazard description translator. */
+static void
+make_insn_alts_attr ()
+{
+ int i, insn_num;
+ decl_t decl;
+ rtx condexp;
+
+ condexp = rtx_alloc (COND);
+ XVEC (condexp, 0) = rtvec_alloc ((description->insns_num - 1) * 2);
+ XEXP (condexp, 1) = make_numeric_value (0);
+ for (i = insn_num = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ {
+ XVECEXP (condexp, 0, 2 * insn_num) = decl->decl.insn_reserv.condexp;
+ XVECEXP (condexp, 0, 2 * insn_num + 1)
+ = make_numeric_value (decl->decl.insn_reserv.transformed_regexp
+ ->regexp.oneof.regexps_num);
+ insn_num++;
+ }
+ }
+ if (description->insns_num != insn_num + 1)
+ abort ();
+ make_internal_attr (attr_printf (sizeof ("*")
+ + strlen (INSN_ALTS_FUNC_NAME) + 1,
+ "*%s", INSN_ALTS_FUNC_NAME),
+ condexp, 0);
+}
+
+\f
+
+/* The following function creates attribute which is order number of
+ insn in pipeline hazard description translator. */
+static void
+make_internal_dfa_insn_code_attr ()
+{
+ int i, insn_num;
+ decl_t decl;
+ rtx condexp;
+
+ condexp = rtx_alloc (COND);
+ XVEC (condexp, 0) = rtvec_alloc ((description->insns_num - 1) * 2);
+ XEXP (condexp, 1) = make_numeric_value (advance_cycle_insn_decl
+ ->decl.insn_reserv.insn_num + 1);
+ for (i = insn_num = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ {
+ XVECEXP (condexp, 0, 2 * insn_num) = decl->decl.insn_reserv.condexp;
+ XVECEXP (condexp, 0, 2 * insn_num + 1)
+ = make_numeric_value (decl->decl.insn_reserv.insn_num);
+ insn_num++;
+ }
+ }
+ if (description->insns_num != insn_num + 1)
+ abort ();
+ make_internal_attr
+ (attr_printf (sizeof ("*")
+ + strlen (INTERNAL_DFA_INSN_CODE_FUNC_NAME) + 1,
+ "*%s", INTERNAL_DFA_INSN_CODE_FUNC_NAME),
+ condexp, 0);
+}
+
+\f
+
+/* The following function creates attribute which order number of insn
+ in pipeline hazard description translator. */
+static void
+make_default_insn_latency_attr ()
+{
+ int i, insn_num;
+ decl_t decl;
+ rtx condexp;
+
+ condexp = rtx_alloc (COND);
+ XVEC (condexp, 0) = rtvec_alloc ((description->insns_num - 1) * 2);
+ XEXP (condexp, 1) = make_numeric_value (0);
+ for (i = insn_num = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl)
+ {
+ XVECEXP (condexp, 0, 2 * insn_num) = decl->decl.insn_reserv.condexp;
+ XVECEXP (condexp, 0, 2 * insn_num + 1)
+ = make_numeric_value (decl->decl.insn_reserv.default_latency);
+ insn_num++;
+ }
+ }
+ if (description->insns_num != insn_num + 1)
+ abort ();
+ make_internal_attr (attr_printf (sizeof ("*")
+ + strlen (INSN_DEFAULT_LATENCY_FUNC_NAME)
+ + 1, "*%s", INSN_DEFAULT_LATENCY_FUNC_NAME),
+ condexp, 0);
+}
+
+\f
+
+/* The following function creates attribute which returns 1 if given
+ output insn has bypassing and 0 otherwise. */
+static void
+make_bypass_attr ()
+{
+ int i, bypass_insn;
+ int bypass_insns_num = 0;
+ decl_t decl;
+ rtx result_rtx;
+
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv
+ && decl->decl.insn_reserv.condexp != NULL
+ && decl->decl.insn_reserv.bypass_list != NULL)
+ bypass_insns_num++;
+ }
+ if (bypass_insns_num == 0)
+ result_rtx = make_numeric_value (0);
+ else
+ {
+ result_rtx = rtx_alloc (COND);
+ XVEC (result_rtx, 0) = rtvec_alloc (bypass_insns_num * 2);
+ XEXP (result_rtx, 1) = make_numeric_value (0);
+
+ for (i = bypass_insn = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv
+ && decl->decl.insn_reserv.condexp != NULL
+ && decl->decl.insn_reserv.bypass_list != NULL)
+ {
+ XVECEXP (result_rtx, 0, 2 * bypass_insn)
+ = decl->decl.insn_reserv.condexp;
+ XVECEXP (result_rtx, 0, 2 * bypass_insn + 1)
+ = make_numeric_value (1);
+ bypass_insn++;
+ }
+ }
+ }
+ make_internal_attr (attr_printf (sizeof ("*")
+ + strlen (BYPASS_P_FUNC_NAME) + 1,
+ "*%s", BYPASS_P_FUNC_NAME),
+ result_rtx, 0);
+}
+
+\f
+
+/* This page mainly contains top level functions of pipeline hazards
+ description translator. */
+
+/* The following macro value is suffix of name of description file of
+ pipeline hazards description translator. */
+#define STANDARD_OUTPUT_DESCRIPTION_FILE_SUFFIX ".dfa"
+
+/* The function returns suffix of given file name. The returned
+ string can not be changed. */
+static const char *
+file_name_suffix (file_name)
+ const char *file_name;
+{
+ const char *last_period;
+
+ for (last_period = NULL; *file_name != '\0'; file_name++)
+ if (*file_name == '.')
+ last_period = file_name;
+ return (last_period == NULL ? file_name : last_period);
+}
+
+/* The function returns base name of given file name, i.e. pointer to
+ first char after last `/' (or `\' for WIN32) in given file name,
+ given file name itself if the directory name is absent. The
+ returned string can not be changed. */
+static const char *
+base_file_name (file_name)
+ const char *file_name;
+{
+ int directory_name_length;
+
+ directory_name_length = strlen (file_name);
+#ifdef WIN32
+ while (directory_name_length >= 0 && file_name[directory_name_length] != '/'
+ && file_name[directory_name_length] != '\\')
+#else
+ while (directory_name_length >= 0 && file_name[directory_name_length] != '/')
+#endif
+ directory_name_length--;
+ return file_name + directory_name_length + 1;
+}
+
+/* The following is top level function to initialize the work of
+ pipeline hazards description translator. */
+void
+initiate_automaton_gen (argc, argv)
+ int argc;
+ char **argv;
+{
+ const char *base_name;
+ int i;
+
+ ndfa_flag = 0;
+ split_argument = 0; /* default value */
+ no_minimization_flag = 0;
+ time_flag = 0;
+ v_flag = 0;
+ w_flag = 0;
+ for (i = 2; i < argc; i++)
+ if (strcmp (argv [i], NO_MINIMIZATION_OPTION) == 0)
+ no_minimization_flag = 1;
+ else if (strcmp (argv [i], "-time") == 0)
+ time_flag = 1;
+ else if (strcmp (argv [i], "-v") == 0)
+ v_flag = 1;
+ else if (strcmp (argv [i], W_OPTION) == 0)
+ w_flag = 1;
+ else if (strcmp (argv [i], NDFA_OPTION) == 0)
+ ndfa_flag = 1;
+ else if (strcmp (argv [i], "-split") == 0)
+ {
+ if (i + 1 >= argc)
+ fatal ("-split has no argument.");
+ fatal ("option `-split' has not been implemented yet\n");
+ /* split_argument = atoi (argument_vect [i + 1]); */
+ }
+ VLA_PTR_CREATE (decls, 150, "decls");
+ /* Initialize IR storage. */
+ obstack_init (&irp);
+ initiate_automaton_decl_table ();
+ initiate_insn_decl_table ();
+ initiate_decl_table ();
+ output_file = stdout;
+ output_description_file = NULL;
+ base_name = base_file_name (argv[1]);
+ obstack_grow (&irp, base_name,
+ strlen (base_name) - strlen (file_name_suffix (base_name)));
+ obstack_grow (&irp, STANDARD_OUTPUT_DESCRIPTION_FILE_SUFFIX,
+ strlen (STANDARD_OUTPUT_DESCRIPTION_FILE_SUFFIX) + 1);
+ obstack_1grow (&irp, '\0');
+ output_description_file_name = obstack_base (&irp);
+ obstack_finish (&irp);
+}
+
+/* The following function checks existence at least one arc marked by
+ each insn. */
+static void
+check_automata ()
+{
+ automaton_t automaton;
+ ainsn_t ainsn, reserv_ainsn;
+
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ for (ainsn = automaton->ainsn_list;
+ ainsn != NULL;
+ ainsn = ainsn->next_ainsn)
+ if (ainsn->first_insn_with_same_reservs && !ainsn->arc_exists_p)
+ {
+ for (reserv_ainsn = ainsn;
+ reserv_ainsn != NULL;
+ reserv_ainsn = reserv_ainsn->next_same_reservs_insn)
+ if (automaton->corresponding_automaton_decl != NULL)
+ {
+ if (!w_flag)
+ error ("Automaton `%s': Insn `%s' will never be issued",
+ automaton->corresponding_automaton_decl->name,
+ reserv_ainsn->insn_reserv_decl->name);
+ else
+ warning
+ ("Automaton `%s': Insn `%s' will never be issued",
+ automaton->corresponding_automaton_decl->name,
+ reserv_ainsn->insn_reserv_decl->name);
+ }
+ else
+ {
+ if (!w_flag)
+ error ("Insn `%s' will never be issued",
+ reserv_ainsn->insn_reserv_decl->name);
+ else
+ warning ("Insn `%s' will never be issued",
+ reserv_ainsn->insn_reserv_decl->name);
+ }
+ }
+ }
+}
+
+/* The following vla is used for storing pointers to all achieved
+ states. */
+static vla_ptr_t automaton_states;
+
+/* This function is called by function pass_states to add an achieved
+ STATE. */
+static void
+add_automaton_state (state)
+ state_t state;
+{
+ VLA_PTR_ADD (automaton_states, state);
+}
+
+/* The following function forms list of important automata (whose
+ states may be changed after the insn issue) for each insn. */
+static void
+form_important_insn_automata_lists ()
+{
+ automaton_t automaton;
+ state_t *state_ptr;
+ decl_t decl;
+ ainsn_t ainsn;
+ arc_t arc;
+ int i;
+
+ VLA_PTR_CREATE (automaton_states, 1500,
+ "automaton states for forming important insn automata sets");
+ /* Mark important ainsns. */
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ {
+ VLA_PTR_NULLIFY (automaton_states);
+ pass_states (automaton, add_automaton_state);
+ for (state_ptr = VLA_PTR_BEGIN (automaton_states);
+ state_ptr <= (state_t *) VLA_PTR_LAST (automaton_states);
+ state_ptr++)
+ {
+ for (arc = first_out_arc (*state_ptr);
+ arc != NULL;
+ arc = next_out_arc (arc))
+ if (arc->to_state != *state_ptr)
+ {
+ if (!arc->insn->first_insn_with_same_reservs)
+ abort ();
+ for (ainsn = arc->insn;
+ ainsn != NULL;
+ ainsn = ainsn->next_same_reservs_insn)
+ ainsn->important_p = TRUE;
+ }
+ }
+ }
+ VLA_PTR_DELETE (automaton_states);
+ /* Create automata sets for the insns. */
+ for (i = 0; i < description->decls_num; i++)
+ {
+ decl = description->decls [i];
+ if (decl->mode == dm_insn_reserv)
+ {
+ automata_list_start ();
+ for (automaton = description->first_automaton;
+ automaton != NULL;
+ automaton = automaton->next_automaton)
+ for (ainsn = automaton->ainsn_list;
+ ainsn != NULL;
+ ainsn = ainsn->next_ainsn)
+ if (ainsn->important_p
+ && ainsn->insn_reserv_decl == &decl->decl.insn_reserv)
+ {
+ automata_list_add (automaton);
+ break;
+ }
+ decl->decl.insn_reserv.important_automata_list
+ = automata_list_finish ();
+ }
+ }
+}
+
+
+/* The following is top level function to generate automat(a,on) for
+ fast recognition of pipeline hazards. */
+void
+expand_automata ()
+{
+ int i;
+
+ description = create_node (sizeof (struct description)
+ /* One entry for cycle advancing insn. */
+ + sizeof (decl_t) * VLA_PTR_LENGTH (decls));
+ description->decls_num = VLA_PTR_LENGTH (decls);
+ description->query_units_num = 0;
+ for (i = 0; i < description->decls_num; i++)
+ {
+ description->decls [i] = VLA_PTR (decls, i);
+ if (description->decls [i]->mode == dm_unit
+ && description->decls [i]->decl.unit.query_p)
+ description->decls [i]->decl.unit.query_num
+ = description->query_units_num++;
+ }
+ all_time = create_ticker ();
+ check_time = create_ticker ();
+ fprintf (stderr, "Check description...");
+ fflush (stderr);
+ check_all_description ();
+ fprintf (stderr, "done\n");
+ ticker_off (&check_time);
+ generation_time = create_ticker ();
+ if (!have_error)
+ {
+ generate ();
+ check_automata ();
+ if (!have_error)
+ {
+ form_important_insn_automata_lists ();
+ fprintf (stderr, "Generation of attributes...");
+ fflush (stderr);
+ make_internal_dfa_insn_code_attr ();
+ make_insn_alts_attr ();
+ make_default_insn_latency_attr ();
+ make_bypass_attr ();
+ fprintf (stderr, "done\n");
+ }
+ }
+ ticker_off (&generation_time);
+ ticker_off (&all_time);
+ fprintf (stderr, "All other genattrtab stuff...");
+ fflush (stderr);
+}
+
+/* The following is top level function to output PHR and to finish
+ work with pipeline description translator. */
+void
+write_automata ()
+{
+ fprintf (stderr, "done\n");
+ if (have_error)
+ fatal ("Errors in DFA description");
+ ticker_on (&all_time);
+ output_time = create_ticker ();
+ fprintf (stderr, "Forming and outputing automata tables...");
+ fflush (stderr);
+ output_dfa_max_issue_rate ();
+ output_tables ();
+ fprintf (stderr, "done\n");
+ fprintf (stderr, "Output functions to work with automata...");
+ fflush (stderr);
+ output_chip_definitions ();
+ output_max_insn_queue_index_def ();
+ output_internal_min_issue_delay_func ();
+ output_internal_trans_func ();
+ /* Cache of insn dfa codes: */
+ fprintf (output_file, "\nstatic int *%s;\n", DFA_INSN_CODES_VARIABLE_NAME);
+ fprintf (output_file, "\nstatic int %s;\n\n",
+ DFA_INSN_CODES_LENGTH_VARIABLE_NAME);
+ output_dfa_insn_code_func ();
+ output_trans_func ();
+ fprintf (output_file, "\n#if %s\n\n", AUTOMATON_STATE_ALTS_MACRO_NAME);
+ output_internal_state_alts_func ();
+ output_state_alts_func ();
+ fprintf (output_file, "\n#endif /* #if %s */\n\n",
+ AUTOMATON_STATE_ALTS_MACRO_NAME);
+ output_min_issue_delay_func ();
+ output_internal_dead_lock_func ();
+ output_dead_lock_func ();
+ output_size_func ();
+ output_internal_reset_func ();
+ output_reset_func ();
+ output_min_insn_conflict_delay_func ();
+ output_internal_insn_latency_func ();
+ output_insn_latency_func ();
+ output_print_reservation_func ();
+ if (no_minimization_flag)
+ {
+ fprintf (output_file, "\n#if %s\n\n", CPU_UNITS_QUERY_MACRO_NAME);
+ output_get_cpu_unit_code_func ();
+ output_cpu_unit_reservation_p ();
+ fprintf (output_file, "\n#endif /* #if %s */\n\n",
+ CPU_UNITS_QUERY_MACRO_NAME);
+ }
+ output_dfa_start_func ();
+ output_dfa_finish_func ();
+ fprintf (stderr, "done\n");
+ if (v_flag)
+ {
+ output_description_file = fopen (output_description_file_name, "w");
+ if (output_description_file == NULL)
+ {
+ perror (output_description_file_name);
+ exit (FATAL_EXIT_CODE);
+ }
+ fprintf (stderr, "Output automata description...");
+ fflush (stderr);
+ output_description ();
+ output_automaton_descriptions ();
+ fprintf (stderr, "done\n");
+ output_statistics (output_description_file);
+ }
+ output_statistics (stderr);
+ ticker_off (&output_time);
+ output_time_statistics (stderr);
+ finish_states ();
+ finish_arcs ();
+ finish_automata_lists ();
+ if (time_flag)
+ {
+ fprintf (stderr, "Summary:\n");
+ fprintf (stderr, " check time ");
+ print_active_time (stderr, check_time);
+ fprintf (stderr, ", generation time ");
+ print_active_time (stderr, generation_time);
+ fprintf (stderr, ", all time ");
+ print_active_time (stderr, all_time);
+ fprintf (stderr, "\n");
+ }
+ /* Finish all work. */
+ if (output_description_file != NULL)
+ {
+ fflush (output_description_file);
+ if (ferror (stdout) != 0)
+ fatal ("Error in writing DFA description file %s",
+ output_description_file_name);
+ fclose (output_description_file);
+ }
+ finish_automaton_decl_table ();
+ finish_insn_decl_table ();
+ finish_decl_table ();
+ obstack_free (&irp, NULL);
+ if (have_error && output_description_file != NULL)
+ remove (output_description_file_name);
+}
projects / platform / upstream / linaro-gcc.git / commitdiff