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| author | Richard Guenther <rguenther@suse.de> | 2009-06-29 12:23:21 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-06-29 12:23:21 +0000 |
| commit | 74d27244ecfc02a14355efc26855034a684daeb9 (patch) | |
| tree | 9628cef93c202d8f6bd22c558673343fbd31f01a /gcc/tree-ssa-alias.h | |
| parent | 5b21f0f37dd072967e60c5e413dbabec1eb1c837 (diff) | |
| download | gcc-74d27244ecfc02a14355efc26855034a684daeb9.tar.gz | |
re PR middle-end/14187 ([tree-ssa] C restricted pointers are not properly implemented)
2009-06-29 Richard Guenther <rguenther@suse.de>
PR middle-end/14187
* tree-ssa-alias.h (struct pt_solution): Add vars_contains_restrict
flag.
(pt_solutions_same_restrict_base): Declare.
* tree-ssa-structalias.c (struct variable_info): Add is_restrict_var
flag.
(new_var_info): Initialize is_global_var properly for SSA_NAMEs.
(make_constraint_from, make_copy_constraint): Move earlier.
(make_constraint_from_heapvar): New function.
(make_constraint_from_restrict): Likewise.
(handle_lhs_call): Use it.
(find_func_aliases): Use it to track conversions to restrict
qualified pointers.
(struct fieldoff): Add only_restrict_pointers flag.
(push_fields_onto_fieldstack): Initialize it.
(create_variable_info_for): Track global restrict qualified pointers.
(intra_create_variable_infos): Use make_constraint_from_heapvar.
Track restrict qualified pointer arguments.
(set_uids_in_ptset): Use varinfo is_global_var flag.
(find_what_var_points_to): Set the vars_contains_restrict flag.
Always create the points-to solution for sets including restrict tags.
(pt_solutions_same_restrict_base): New function.
* tree-ssa-alias.c (ptr_derefs_may_alias_p): For two restrict
qualified pointers use pt_solutions_same_restrict_base as
additional source for disambiguation.
* gcc.dg/tree-ssa/restrict-1.c: New testcase.
* gcc.dg/tree-ssa/restrict-2.c: Likewise.
* gcc.dg/tree-ssa/restrict-3.c: Likewise.
* gcc.c-torture/execute/20090623-1.c: Likewise.
* gcc.dg/tree-ssa/ldist-13.c: Likewise.
* gcc.dg/tree-ssa/ldist-14.c: Likewise.
From-SVN: r149048
Diffstat (limited to 'gcc/tree-ssa-alias.h')
| -rw-r--r-- | gcc/tree-ssa-alias.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-ssa-alias.h b/gcc/tree-ssa-alias.h index 9115e61c22c..b071e4b1b81 100644 --- a/gcc/tree-ssa-alias.h +++ b/gcc/tree-ssa-alias.h @@ -49,6 +49,9 @@ struct GTY(()) pt_solution /* Nonzero if the pt_vars bitmap includes a global variable. */ unsigned int vars_contains_global : 1; + /* Nonzero if the pt_vars bitmap includes a restrict tag variable. */ + unsigned int vars_contains_restrict : 1; + /* Set of variables that this pointer may point to. */ bitmap vars; }; @@ -115,6 +118,8 @@ extern void delete_alias_heapvars (void); extern bool pt_solution_includes_global (struct pt_solution *); extern bool pt_solution_includes (struct pt_solution *, const_tree); extern bool pt_solutions_intersect (struct pt_solution *, struct pt_solution *); +extern bool pt_solutions_same_restrict_base (struct pt_solution *, + struct pt_solution *); extern void pt_solution_reset (struct pt_solution *); extern void dump_pta_stats (FILE *); |