* tree-tailcall.c (suitable_for_tail_call_opt_p): Use TREE_ADDRESSABLE
when alias info is not ready.
(pass_tail_recursion): Do not require aliasing.
* tree-ssa-copyrename.c (pass_rename_ssa_cop): Likewise.
* tree-ssa-ccp.c (pass_ccp, pass_fold_builtins): Likewise.
* tree-ssa-copy.c (pass_copy_prop): Likewise.
* tree-ssa-forwprop.c (pass_forwprop): Likewise.
* tree-ssa-dce.c (pass_dce, pass_dce_loop, pass_cd_dce): Likewise.
* passes.c (init_optimization_passes): Execute rename_ssa_copies,
ccp, forwprop, copy_prop, merge_phi, copy_prop, dce and tail recursion
before inlining.
* tree-ssa-operands.c (add_virtual_operand, get_indirect_ref_operand):
When aliasing is not build, mark statement as volatile.
* gcc.dg/tree-ssa/tailrecursion-4.c: Update dump file.
* gcc.dg/tree-ssa/tailrecursion-1.c: Update dump file.
* gcc.dg/tree-ssa/tailrecursion-2.c: Update dump file.
* gcc.dg/tree-ssa/tailrecursion-3.c: Update dump file.
* gcc.dg/tree-ssa/pr21658.c: Likewise.
* gcc.dg/tree-ssa/pr15349.c: Likewise.
* gcc.dg/tree-ssa/pr25501.c: Likewise.
* gcc.dg/tree-ssa/vrp11.c: Make more complex so it still test
transformation in question.
* gcc.dg/tree-ssa/vrp05.c: Likewise.
* gcc.dg/tree-ssa/pr20701.c: Likewise.
* gcc.dg/always_inline3.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120681
138bc75d-0d04-0410-961f-
82ee72b054a4
+2007-01-11 Jan Hubicka <jh@suse.cz>
+
+ PR tree-optimization/1046
+ * tree-tailcall.c (suitable_for_tail_call_opt_p): Use TREE_ADDRESSABLE
+ when alias info is not ready.
+ (pass_tail_recursion): Do not require aliasing.
+ * tree-ssa-copyrename.c (pass_rename_ssa_cop): Likewise.
+ * tree-ssa-ccp.c (pass_ccp, pass_fold_builtins): Likewise.
+ * tree-ssa-copy.c (pass_copy_prop): Likewise.
+ * tree-ssa-forwprop.c (pass_forwprop): Likewise.
+ * tree-ssa-dce.c (pass_dce, pass_dce_loop, pass_cd_dce): Likewise.
+ * passes.c (init_optimization_passes): Execute rename_ssa_copies,
+ ccp, forwprop, copy_prop, merge_phi, copy_prop, dce and tail recursion
+ before inlining.
+ * tree-ssa-operands.c (add_virtual_operand, get_indirect_ref_operand):
+ When aliasing is not build, mark statement as volatile.
+
2007-01-11 Tom Tromey <tromey@redhat.com>
PR preprocessor/15185, PR preprocessor/20989:
NEXT_PASS (pass_build_ssa);
NEXT_PASS (pass_early_warn_uninitialized);
NEXT_PASS (pass_cleanup_cfg);
+ NEXT_PASS (pass_rename_ssa_copies);
+ NEXT_PASS (pass_ccp);
+
+ NEXT_PASS (pass_forwprop);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_merge_phi);
+ NEXT_PASS (pass_dce);
+ NEXT_PASS (pass_tail_recursion);
+ NEXT_PASS (pass_release_ssa_names);
*p = NULL;
{
gcc_assert (!current_function_decl);
gcc_assert (!cfun);
+ if (!quiet_flag)
+ {
+ fprintf (stderr, " <%s>", pass->name ? pass->name : "");
+ fflush (stderr);
+ }
if (execute_one_pass (pass) && pass->sub)
do_per_function ((void (*)(void *))execute_pass_list, pass->sub);
if (!current_function_decl)
extern struct tree_opt_pass pass_set_nothrow_function_flags;
extern struct tree_opt_pass pass_final;
extern struct tree_opt_pass pass_rtl_seqabstr;
+extern struct tree_opt_pass pass_release_ssa_names;
/* The root of the compilation pass tree, once constructed. */
extern struct tree_opt_pass *all_passes, *all_ipa_passes, *all_lowering_passes;
NULL, /* next */
0, /* static_pass_number */
TV_TREE_CCP, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
0, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_COPY_PROP, /* tv_id */
- PROP_ssa | PROP_alias | PROP_cfg, /* properties_required */
+ PROP_ssa | PROP_cfg, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_COPY_RENAME, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_DCE, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_DCE, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_CD_DCE, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_FORWPROP, /* tv_id */
- PROP_cfg | PROP_ssa
- | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
aliases = v_ann->may_aliases;
if (aliases == NULL)
{
+ if (s_ann && !gimple_aliases_computed_p (cfun))
+ s_ann->has_volatile_ops = true;
/* The variable is not aliased or it is an alias tag. */
if (flags & opf_def)
append_vdef (var);
stmt_ann_t s_ann = stmt_ann (stmt);
s_ann->references_memory = true;
+ if (s_ann && TREE_THIS_VOLATILE (expr))
+ s_ann->has_volatile_ops = true;
if (SSA_VAR_P (ptr))
{
if (v_ann->symbol_mem_tag)
add_virtual_operand (v_ann->symbol_mem_tag, s_ann, flags,
full_ref, offset, size, false);
+ /* Aliasing information is missing; mark statement as volatile so we
+ won't optimize it out too actively. */
+ else if (s_ann && !gimple_aliases_computed_p (cfun)
+ && (flags & opf_def))
+ s_ann->has_volatile_ops = true;
}
}
else if (TREE_CODE (ptr) == INTEGER_CST)
#include "varray.h"
#include "ggc.h"
#include "tree-flow.h"
+#include "tree-pass.h"
/* Rewriting a function into SSA form can create a huge number of SSA_NAMEs,
many of which may be thrown away shortly after their creation if jumps
SSA_NAME_VAR (ssa_name) = sym;
TREE_TYPE (ssa_name) = TREE_TYPE (sym);
}
+
+/* Return SSA names that are unused to GGC memory. This is used to keep
+ footprint of compiler during interprocedural optimization.
+ As a side effect the SSA_NAME_VERSION number reuse is reduced
+ so this function should not be used too often. */
+static unsigned int
+release_dead_ssa_names (void)
+{
+ tree t, next;
+ int n = 0;
+ referenced_var_iterator rvi;
+
+ /* Current defs point to various dead SSA names that in turn points to dead
+ statements so bunch of dead memory is holded from releasing. */
+ FOR_EACH_REFERENCED_VAR (t, rvi)
+ set_current_def (t, NULL);
+ /* Now release the freelist. */
+ for (t = FREE_SSANAMES (cfun); t; t = next)
+ {
+ next = TREE_CHAIN (t);
+ ggc_free (t);
+ n++;
+ }
+ FREE_SSANAMES (cfun) = NULL;
+ if (dump_file)
+ fprintf (dump_file, "Released %i names, %.2f%%\n", n, n * 100.0 / num_ssa_names);
+ return 0;
+}
+
+struct tree_opt_pass pass_release_ssa_names =
+{
+ "release_ssa", /* name */
+ NULL, /* gate */
+ release_dead_ssa_names, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ 0, /* tv_id */
+ PROP_ssa, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
+ 0 /* letter */
+};
FOR_EACH_REFERENCED_VAR (var, rvi)
{
-
if (!is_global_var (var)
&& (!MTAG_P (var) || TREE_CODE (var) == STRUCT_FIELD_TAG)
- && is_call_clobbered (var))
+ && (gimple_aliases_computed_p (cfun) ? is_call_clobbered (var)
+ : TREE_ADDRESSABLE (var)))
return false;
}
NULL, /* next */
0, /* static_pass_number */
0, /* tv_id */
- PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
+ PROP_cfg | PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */