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| author | Jakub Jelinek <jakub@redhat.com> | 2011-10-06 18:38:29 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-10-06 18:38:29 +0200 |
| commit | b799033017f0b33846490fc4612b4eb29b9ed0c6 (patch) | |
| tree | 6d63b4a87380ed4deee53471eb0ac57a208ac508 /gcc/tree-ssa-structalias.c | |
| parent | b966d3a966a20aaa3de54d6a7ea78703ffb22a8d (diff) | |
| download | gcc-b799033017f0b33846490fc4612b4eb29b9ed0c6.zip gcc-b799033017f0b33846490fc4612b4eb29b9ed0c6.tar.gz gcc-b799033017f0b33846490fc4612b4eb29b9ed0c6.tar.bz2 | |
re PR tree-optimization/49279 (Optimization incorrectly presuming constant variable inside loop in g++ 4.5 and 4.6 with -O2 and -O3 for x86_64 targets)
PR tree-optimization/49279
* tree-ssa-structalias.c (find_func_aliases): Don't handle
CAST_RESTRICT.
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Allow
restrict propagation.
* tree-ssa.c (useless_type_conversion_p): Don't return false
if TYPE_RESTRICT differs.
* gcc.dg/tree-ssa/restrict-4.c: XFAIL.
* gcc.c-torture/execute/pr49279.c: New test.
From-SVN: r179620
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 821fc7d..7de22aa 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -4494,15 +4494,6 @@ find_func_aliases (gimple origt) && (!in_ipa_mode || DECL_EXTERNAL (lhsop) || TREE_PUBLIC (lhsop))) make_escape_constraint (rhsop); - /* If this is a conversion of a non-restrict pointer to a - restrict pointer track it with a new heapvar. */ - else if (gimple_assign_cast_p (t) - && POINTER_TYPE_P (TREE_TYPE (rhsop)) - && POINTER_TYPE_P (TREE_TYPE (lhsop)) - && !TYPE_RESTRICT (TREE_TYPE (rhsop)) - && TYPE_RESTRICT (TREE_TYPE (lhsop))) - make_constraint_from_restrict (get_vi_for_tree (lhsop), - "CAST_RESTRICT"); } /* Handle escapes through return. */ else if (gimple_code (t) == GIMPLE_RETURN |