1 /* Target Code for ft32
2 Copyright (C) 2015-2019 Free Software Foundation, Inc.
3 Contributed by FTDI <support@ftdi.com>
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #define IN_TARGET_CODE 1
25 #include "coretypes.h"
30 #include "stringpool.h"
37 #include "diagnostic-core.h"
39 #include "stor-layout.h"
43 #include "print-tree.h"
45 /* This file should be included last. */
46 #include "target-def.h"
50 #define LOSE_AND_RETURN(msgid, x) \
53 ft32_operand_lossage (msgid, x); \
57 /* Worker function for TARGET_RETURN_IN_MEMORY. */
60 ft32_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
62 const HOST_WIDE_INT size = int_size_in_bytes (type);
63 return (size == -1 || size > 2 * UNITS_PER_WORD);
66 /* Define how to find the value returned by a function.
67 VALTYPE is the data type of the value (as a tree).
68 If the precise function being called is known, FUNC is its
69 FUNCTION_DECL; otherwise, FUNC is 0.
71 We always return values in register $r0 for ft32. */
74 ft32_function_value (const_tree valtype,
75 const_tree fntype_or_decl ATTRIBUTE_UNUSED,
76 bool outgoing ATTRIBUTE_UNUSED)
78 return gen_rtx_REG (TYPE_MODE (valtype), FT32_R0);
81 /* Define how to find the value returned by a library function.
83 We always return values in register $r0 for ft32. */
86 ft32_libcall_value (machine_mode mode, const_rtx fun ATTRIBUTE_UNUSED)
88 return gen_rtx_REG (mode, FT32_R0);
91 /* Handle TARGET_FUNCTION_VALUE_REGNO_P.
93 We always return values in register $r0 for ft32. */
96 ft32_function_value_regno_p (const unsigned int regno)
98 return (regno == FT32_R0);
101 /* Emit an error message when we're in an asm, and a fatal error for
102 "normal" insns. Formatted output isn't easily implemented, since we
103 use output_operand_lossage to output the actual message and handle the
104 categorization of the error. */
107 ft32_operand_lossage (const char *msgid, rtx op)
110 output_operand_lossage ("%s", msgid);
113 /* The PRINT_OPERAND_ADDRESS worker. */
116 ft32_print_operand_address (FILE * file, rtx x)
118 switch (GET_CODE (x))
121 fprintf (file, "%s,0", reg_names[REGNO (x)]);
125 switch (GET_CODE (XEXP (x, 1)))
128 fprintf (file, "%s,%ld",
129 reg_names[REGNO (XEXP (x, 0))], INTVAL (XEXP (x, 1)));
132 output_addr_const (file, XEXP (x, 1));
133 fprintf (file, "(%s)", reg_names[REGNO (XEXP (x, 0))]);
137 rtx plus = XEXP (XEXP (x, 1), 0);
138 if (GET_CODE (XEXP (plus, 0)) == SYMBOL_REF
139 && CONST_INT_P (XEXP (plus, 1)))
141 output_addr_const (file, XEXP (plus, 0));
142 fprintf (file, "+%ld(%s)", INTVAL (XEXP (plus, 1)),
143 reg_names[REGNO (XEXP (x, 0))]);
155 output_addr_const (file, x);
160 /* The PRINT_OPERAND worker. */
163 ft32_print_operand (FILE * file, rtx x, int code)
167 /* New code entries should just be added to the switch below. If
168 handling is finished, just return. If handling was just a
169 modification of the operand, the modified operand should be put in
170 "operand", and then do a break to let default handling
171 (zero-modifier) output the operand. */
176 /* No code, print as usual. */
180 if (GET_CODE (operand) != REG)
181 internal_error ("%<h%> applied to non-register operand");
182 fprintf (file, "%s", reg_names[REGNO (operand) + 1]);
186 fprintf (file, "%ld", (long) (- INTVAL(x)));
189 case 'd': // a DW spec, from an integer alignment (for BLKmode insns)
206 internal_error ("bad alignment: %d", i);
211 fprintf (file, "%c", dwspec);
217 int bf = ft32_as_bitfield (INTVAL (x));
218 fprintf (file, "512|(%d<<5)|%d", bf >> 5, bf & 31);
224 int bf = ft32_as_bitfield (0xffffffff ^ INTVAL (x));
225 fprintf (file, "(%d<<5)|%d", bf >> 5, bf & 31);
231 ft32_print_operand (file, XEXP (x, 0), 0);
236 LOSE_AND_RETURN ("invalid operand modifier letter", x);
239 /* Print an operand as without a modifier letter. */
240 switch (GET_CODE (operand))
243 fprintf (file, "%s", reg_names[REGNO (operand)]);
247 output_address (GET_MODE (XEXP (operand, 0)), XEXP (operand, 0));
251 /* No need to handle all strange variants, let output_addr_const
253 if (CONSTANT_P (operand))
255 output_addr_const (file, operand);
259 LOSE_AND_RETURN ("unexpected operand", x);
264 ft32_load_immediate (rtx dst, int32_t i)
268 if (i >= -524288 && i <= 524287)
270 sprintf (pattern, "ldk.l %%0,%d", i);
271 output_asm_insn (pattern, &dst);
273 else if (i >= -536870912 && i <= 536870911)
275 ft32_load_immediate (dst, i >> 10);
276 sprintf (pattern, "ldl.l %%0,%%0,%d", i & 1023);
277 output_asm_insn (pattern, &dst);
281 int rd; // rotate distance
283 for (rd = 1; rd < 32; rd++)
285 u = ((u >> 31) & 1) | (u << 1);
286 if ((int32_t) u >= -524288 && (int32_t) u <= 524287)
288 ft32_load_immediate (dst, (int32_t) u);
289 sprintf (pattern, "ror.l %%0,%%0,%d", rd);
290 output_asm_insn (pattern, &dst);
294 ft32_load_immediate (dst, i >> 10);
295 sprintf (pattern, "ldl.l %%0,%%0,%d", i & 1023);
296 output_asm_insn (pattern, &dst);
302 // x is a bit mask, for example:
303 // 00000000000000000000001111111110
304 // If x contains a single bit mask, return the bitfield spec.
305 // in the above case it returns ((9 << 5) | 1)
306 // Otherwise return -1.
309 #define NBITS(n) ((1U << (n)) - 1U)
312 ft32_as_bitfield (unsigned int x)
319 for (lobit = 0; lobit < 32; lobit++)
320 if (x & (1 << lobit))
322 for (hibit = 31; hibit >= 0; hibit--)
323 if (x & (1 << hibit))
326 int width = 1 + hibit - lobit;
330 if (x != (NBITS (width) << lobit))
331 return -1; // not a clean bitfield
333 return ((width & 15) << 5) | lobit;
336 /* Per-function machine data. */
337 struct GTY (()) machine_function
339 /* Number of bytes saved on the stack for callee saved registers. */
340 int callee_saved_reg_size;
342 /* Number of bytes saved on the stack for local variables. */
345 /* The sum of 2 sizes: locals vars and padding byte for saving the
346 * registers. Used in expand_prologue () and expand_epilogue (). */
347 int size_for_adjusting_sp;
350 /* Zero initialization is OK for all current fields. */
352 static struct machine_function *
353 ft32_init_machine_status (void)
355 return ggc_cleared_alloc < machine_function > ();
359 /* The TARGET_OPTION_OVERRIDE worker.
360 All this curently does is set init_machine_status. */
362 ft32_option_override (void)
364 /* Set the per-function-data initializer. */
365 init_machine_status = ft32_init_machine_status;
368 /* Implement targetm.select_section. */
370 ft32_select_section (tree decl, int reloc, unsigned HOST_WIDE_INT align)
372 /* Variables and constants defined in the __ea address space
373 go into a special section named "._ea". */
374 if (TREE_TYPE (decl) != error_mark_node
375 && TYPE_ADDR_SPACE (TREE_TYPE (decl)) == ADDR_SPACE_PM)
377 /* We might get called with string constants, but get_named_section
378 doesn't like them as they are not DECLs. Also, we need to set
379 flags in that case. */
381 return get_section ("._pm", SECTION_WRITE | SECTION_DEBUG, NULL);
383 return get_named_section (decl, "._pm", reloc);
386 return default_elf_select_section (decl, reloc, align);
389 /* Compute the size of the local area and the size to be adjusted by the
390 * prologue and epilogue. */
393 ft32_compute_frame (void)
395 /* For aligning the local variables. */
396 int stack_alignment = STACK_BOUNDARY / BITS_PER_UNIT;
400 /* Padding needed for each element of the frame. */
401 cfun->machine->local_vars_size = get_frame_size ();
403 /* Align to the stack alignment. */
404 padding_locals = cfun->machine->local_vars_size % stack_alignment;
406 padding_locals = stack_alignment - padding_locals;
408 cfun->machine->local_vars_size += padding_locals;
410 cfun->machine->callee_saved_reg_size = 0;
412 /* Save callee-saved registers. */
413 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
414 if (df_regs_ever_live_p (regno) && !call_used_or_fixed_reg_p (regno))
415 cfun->machine->callee_saved_reg_size += 4;
417 cfun->machine->size_for_adjusting_sp =
418 0 // crtl->args.pretend_args_size
419 + cfun->machine->local_vars_size
420 + (ACCUMULATE_OUTGOING_ARGS
421 ? (HOST_WIDE_INT) crtl->outgoing_args_size : 0);
424 // Must use LINK/UNLINK when...
425 // the frame is bigger than 512 bytes so cannot just "SUB" from SP
426 // the function actually uses $fp
431 int bigframe = (cfun->machine->size_for_adjusting_sp >= 512);
432 return (bigframe || frame_pointer_needed || df_regs_ever_live_p (FT32_FP)
433 || df_regs_ever_live_p (FT32_FP));
437 ft32_expand_prologue (void)
442 ft32_compute_frame ();
444 int args_to_push = crtl->args.pretend_args_size;
449 insn = emit_insn (gen_movsi_pop ((gen_rtx_REG (Pmode, FT32_R29))));
451 for (i = 0; i < (args_to_push / 4); i++)
454 emit_insn (gen_movsi_push ((gen_rtx_REG (Pmode, FT32_R5 - i))));
455 RTX_FRAME_RELATED_P (insn) = 1;
458 insn = emit_insn (gen_movsi_push ((gen_rtx_REG (Pmode, FT32_R29))));
461 if (flag_stack_usage_info)
462 current_function_static_stack_size = cfun->machine->size_for_adjusting_sp;
464 if (!must_link () && (cfun->machine->callee_saved_reg_size == 4))
468 (gen_rtx_REG (Pmode, FT32_R13),
469 GEN_INT (-cfun->machine->size_for_adjusting_sp)));
470 RTX_FRAME_RELATED_P (insn) = 1;
473 /* Save callee-saved registers. */
476 for (regno = FIRST_PSEUDO_REGISTER; regno-- > 0;)
478 if (!fixed_regs[regno] && !call_used_or_fixed_reg_p (regno)
479 && df_regs_ever_live_p (regno))
481 rtx preg = gen_rtx_REG (Pmode, regno);
482 emit_insn (gen_call_prolog (preg));
489 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
491 if (!fixed_regs[regno] && df_regs_ever_live_p (regno)
492 && !call_used_or_fixed_reg_p (regno))
494 insn = emit_insn (gen_movsi_push (gen_rtx_REG (Pmode, regno)));
495 RTX_FRAME_RELATED_P (insn) = 1;
500 if (cfun->machine->size_for_adjusting_sp >= 65536)
502 error ("stack frame must be smaller than 64K");
509 (gen_rtx_REG (Pmode, FT32_FP),
510 GEN_INT (-cfun->machine->size_for_adjusting_sp)));
511 RTX_FRAME_RELATED_P (insn) = 1;
513 else if (cfun->machine->size_for_adjusting_sp > 0)
515 int adj = cfun->machine->size_for_adjusting_sp;
516 insn = emit_insn (gen_addsi3 (gen_rtx_REG (SImode, FT32_SP),
517 gen_rtx_REG (SImode, FT32_SP),
519 RTX_FRAME_RELATED_P (insn) = 1;
524 ft32_expand_epilogue (void)
527 int pretend = crtl->args.pretend_args_size;
530 && (cfun->machine->size_for_adjusting_sp == 24)
531 && (cfun->machine->callee_saved_reg_size == 0))
533 emit_jump_insn (gen_returner24 ());
537 // Set when the epilog code will also add 24 to $sp
538 int epilog24 = (!must_link ()
539 && (cfun->machine->size_for_adjusting_sp == 24)
544 emit_insn (gen_unlink ());
546 else if (!epilog24 && (cfun->machine->size_for_adjusting_sp > 0))
548 emit_insn (gen_addsi3 (gen_rtx_REG (SImode, FT32_SP),
549 gen_rtx_REG (SImode, FT32_SP),
550 GEN_INT (cfun->machine->size_for_adjusting_sp)));
553 if (cfun->machine->callee_saved_reg_size != 0)
555 for (regno = FIRST_PSEUDO_REGISTER; regno-- > 0;)
557 if (!fixed_regs[regno] && !call_used_or_fixed_reg_p (regno)
558 && df_regs_ever_live_p (regno))
560 rtx preg = gen_rtx_REG (Pmode, regno);
561 if (optimize_size && (pretend == 0))
564 emit_insn (gen_jump_epilog24 (preg));
566 emit_insn (gen_jump_epilog (preg));
569 emit_insn (gen_movsi_pop (preg));
575 emit_jump_insn (gen_pretend_returner (GEN_INT (pretend)));
577 emit_jump_insn (gen_returner ());
580 #undef TARGET_FRAME_POINTER_REQUIRED
581 #define TARGET_FRAME_POINTER_REQUIRED ft32_frame_pointer_required
583 ft32_frame_pointer_required (void)
585 return cfun->calls_alloca;
588 #undef TARGET_CAN_ELIMINATE
589 #define TARGET_CAN_ELIMINATE ft32_can_eliminate
591 /* Return true if register FROM can be eliminated via register TO. */
594 ft32_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
597 return (to == FRAME_POINTER_REGNUM) || !ft32_frame_pointer_required ();
600 /* Implements the macro INITIAL_ELIMINATION_OFFSET, return the OFFSET. */
603 ft32_initial_elimination_offset (int from, int to)
605 ft32_compute_frame ();
607 if (from == ARG_POINTER_REGNUM && to == FRAME_POINTER_REGNUM)
609 return cfun->machine->callee_saved_reg_size + 2 * UNITS_PER_WORD;
612 if (from == ARG_POINTER_REGNUM && to == STACK_POINTER_REGNUM)
615 arg_offset = must_link ()? 2 : 1;
616 return ((cfun->machine->callee_saved_reg_size
617 + arg_offset * UNITS_PER_WORD)
618 + cfun->machine->size_for_adjusting_sp);
621 if ((from == FRAME_POINTER_REGNUM) && (to == STACK_POINTER_REGNUM))
623 return cfun->machine->size_for_adjusting_sp;
629 /* Worker function for TARGET_SETUP_INCOMING_VARARGS. */
632 ft32_setup_incoming_varargs (cumulative_args_t cum_v,
633 const function_arg_info &arg,
634 int *pretend_size, int no_rtl ATTRIBUTE_UNUSED)
636 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
638 GET_MODE_SIZE (SImode) * (*cum - FT32_R0) + GET_MODE_SIZE (arg.mode);
641 *pretend_size = 24 - named_size;
646 /* Return the fixed registers used for condition codes. */
649 ft32_fixed_condition_code_regs (unsigned int *p1, unsigned int *p2)
652 *p2 = INVALID_REGNUM;
656 /* Return the next register to be used to hold a function argument or
657 NULL_RTX if there's no more space. */
660 ft32_function_arg (cumulative_args_t cum_v, const function_arg_info &arg)
662 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
665 return gen_rtx_REG (arg.mode, *cum);
670 #define FT32_FUNCTION_ARG_SIZE(MODE, TYPE) \
671 ((MODE) != BLKmode ? GET_MODE_SIZE (MODE) \
672 : (unsigned) int_size_in_bytes (TYPE))
675 ft32_function_arg_advance (cumulative_args_t cum_v,
676 const function_arg_info &arg)
678 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
680 *cum = (*cum < FT32_R6
681 ? *cum + ((3 + FT32_FUNCTION_ARG_SIZE (arg.mode, arg.type)) / 4)
685 /* Return non-zero if the function argument described by ARG is to be
686 passed by reference. */
689 ft32_pass_by_reference (cumulative_args_t, const function_arg_info &arg)
691 if (arg.aggregate_type_p ())
693 unsigned HOST_WIDE_INT size = arg.type_size_in_bytes ();
697 /* Some function arguments will only partially fit in the registers
698 that hold arguments. Given a new arg, return the number of bytes
699 that fit in argument passing registers. */
702 ft32_arg_partial_bytes (cumulative_args_t cum_v, const function_arg_info &arg)
704 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
705 int bytes_left, size;
710 if (ft32_pass_by_reference (cum_v, arg))
714 if (AGGREGATE_TYPE_P (arg.type))
716 size = int_size_in_bytes (arg.type);
719 size = GET_MODE_SIZE (arg.mode);
721 bytes_left = (4 * 6) - ((*cum - 2) * 4);
723 if (size > bytes_left)
729 /* Used by constraints.md to distinguish between GENERIC and PM
733 ft32_is_mem_pm (rtx o)
736 && !ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (o)));
739 /* The Global `targetm' Variable. */
741 /* Initialize the GCC target structure. */
743 #undef TARGET_PROMOTE_PROTOTYPES
744 #define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true
746 #undef TARGET_RETURN_IN_MEMORY
747 #define TARGET_RETURN_IN_MEMORY ft32_return_in_memory
748 #undef TARGET_MUST_PASS_IN_STACK
749 #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size
750 #undef TARGET_PASS_BY_REFERENCE
751 #define TARGET_PASS_BY_REFERENCE ft32_pass_by_reference
752 #undef TARGET_ARG_PARTIAL_BYTES
753 #define TARGET_ARG_PARTIAL_BYTES ft32_arg_partial_bytes
754 #undef TARGET_FUNCTION_ARG
755 #define TARGET_FUNCTION_ARG ft32_function_arg
756 #undef TARGET_FUNCTION_ARG_ADVANCE
757 #define TARGET_FUNCTION_ARG_ADVANCE ft32_function_arg_advance
760 #undef TARGET_SETUP_INCOMING_VARARGS
761 #define TARGET_SETUP_INCOMING_VARARGS ft32_setup_incoming_varargs
763 #undef TARGET_FIXED_CONDITION_CODE_REGS
764 #define TARGET_FIXED_CONDITION_CODE_REGS ft32_fixed_condition_code_regs
766 /* Define this to return an RTX representing the place where a
767 function returns or receives a value of data type RET_TYPE, a tree
768 node representing a data type. */
769 #undef TARGET_FUNCTION_VALUE
770 #define TARGET_FUNCTION_VALUE ft32_function_value
771 #undef TARGET_LIBCALL_VALUE
772 #define TARGET_LIBCALL_VALUE ft32_libcall_value
773 #undef TARGET_FUNCTION_VALUE_REGNO_P
774 #define TARGET_FUNCTION_VALUE_REGNO_P ft32_function_value_regno_p
776 #undef TARGET_OPTION_OVERRIDE
777 #define TARGET_OPTION_OVERRIDE ft32_option_override
779 #undef TARGET_ASM_SELECT_SECTION
780 #define TARGET_ASM_SELECT_SECTION ft32_select_section
782 #undef TARGET_VALID_POINTER_MODE
783 #define TARGET_VALID_POINTER_MODE ft32_valid_pointer_mode
785 ft32_valid_pointer_mode (scalar_int_mode mode)
792 #undef TARGET_ADDR_SPACE_POINTER_MODE
793 #define TARGET_ADDR_SPACE_POINTER_MODE ft32_addr_space_pointer_mode
794 static scalar_int_mode
795 ft32_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED)
800 #undef TARGET_ADDR_SPACE_ADDRESS_MODE
801 #define TARGET_ADDR_SPACE_ADDRESS_MODE ft32_addr_space_address_mode
802 static scalar_int_mode
803 ft32_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED)
808 #undef TARGET_ADDR_SPACE_SUBSET_P
809 #define TARGET_ADDR_SPACE_SUBSET_P ft32_addr_space_subset_p
811 ft32_addr_space_subset_p (addr_space_t subset ATTRIBUTE_UNUSED,
812 addr_space_t superset ATTRIBUTE_UNUSED)
817 #undef TARGET_CASE_VALUES_THRESHOLD
818 #define TARGET_CASE_VALUES_THRESHOLD ft32_target_case_values_threshold
821 ft32_target_case_values_threshold (void)
826 #undef TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P
827 #define TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P \
828 ft32_addr_space_legitimate_address_p
831 // Enabling LRA gives the infamous
832 // internal compiler error: Max. number of generated reload insns per insn is achieved (90)
833 // errors e.g. when compiling sieve.c
838 return ft32_lra_flag;
842 #define TARGET_LRA_P ft32_lra_p
845 reg_ok_for_base_p (rtx r, bool strict)
849 return (HARD_REGNO_OK_FOR_BASE_P (NUM)
850 || HARD_REGNO_OK_FOR_BASE_P (reg_renumber[(NUM)]));
852 return ((NUM) >= FIRST_PSEUDO_REGISTER || HARD_REGNO_OK_FOR_BASE_P (NUM));
856 ft32_addr_space_legitimate_address_p (machine_mode mode, rtx x, bool strict,
857 addr_space_t as ATTRIBUTE_UNUSED)
859 int max_offset = TARGET_FT32B ? 16384 : 128;
863 if (GET_CODE (x) == PLUS)
868 if (GET_CODE (op1) == REG
870 && (-max_offset <= INTVAL (op2))
871 && (INTVAL (op2) < max_offset)
872 && reg_ok_for_base_p (op1, strict))
874 if (GET_CODE (op1) == SYMBOL_REF && CONST_INT_P (op2))
877 if (REG_P (x) && reg_ok_for_base_p (x, strict))
879 if (GET_CODE (x) == SYMBOL_REF
880 || GET_CODE (x) == LABEL_REF || CONST_INT_P (x))
885 if (REG_P (x) && reg_ok_for_base_p (x, strict))
894 #undef TARGET_ENCODE_SECTION_INFO
895 #define TARGET_ENCODE_SECTION_INFO ft32_elf_encode_section_info
898 ft32_elf_encode_section_info (tree decl, rtx rtl, int first)
903 /* Careful not to prod global register variables. */
906 symbol = XEXP (rtl, 0);
907 if (GET_CODE (symbol) != SYMBOL_REF)
910 default_encode_section_info (decl, rtl, first);
912 code = TREE_CODE (decl);
913 switch (TREE_CODE_CLASS (code))
915 case tcc_declaration:
917 tree type = TREE_TYPE (decl);
918 int is_flash = (type && TYPE_P (type)
919 && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)));
920 if ((code == VAR_DECL) && !is_flash)
921 SYMBOL_REF_FLAGS (symbol) |= 0x1000;
926 case tcc_exceptional:
927 if (code == STRING_CST)
928 SYMBOL_REF_FLAGS (symbol) |= 0x1000;
936 #undef TARGET_CONSTANT_ALIGNMENT
937 #define TARGET_CONSTANT_ALIGNMENT constant_alignment_word_strings
939 struct gcc_target targetm = TARGET_INITIALIZER;