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Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 9522b28..e619190 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -208,6 +208,14 @@ ptr_deref_may_alias_decl_p (tree ptr, tree decl) if (!pi) return true; + /* If the decl can be used as a restrict tag and we have a restrict + pointer and that pointers points-to set doesn't contain this decl + then they can't alias. */ + if (DECL_RESTRICTED_P (decl) + && TYPE_RESTRICT (TREE_TYPE (ptr)) + && pi->pt.vars_contains_restrict) + return bitmap_bit_p (pi->pt.vars, DECL_UID (decl)); + return pt_solution_includes (&pi->pt, decl); } |