diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-02 07:37:35 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-02 07:37:35 +0000 |
| commit | 1464518be776d99cf3d4dac4317ee9593d873407 (patch) | |
| tree | da79f9f2b5d7561937a823eb7a573eb0f7aec873 /gcc/tree-ssa-dom.c | |
| parent | d69a4955403cbb9cf3332b8511be5c5629335843 (diff) | |
| download | gcc-1464518be776d99cf3d4dac4317ee9593d873407.tar.gz | |
2015-07-02 Richard Biener <rguenther@suse.de>
* tree-ssa-dom.c (build_and_record_new_cond): Add optional
parameter to record a condition that is false.
(record_conditions): When recording an extra NE_EXPR that is
true also record a EQ_EXPR that is false.
* gcc.dg/tree-ssa/ssa-dom-cse-4.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225299 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-dom.c')
| -rw-r--r-- | gcc/tree-ssa-dom.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index e45b78c411a..698f78a5239 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -813,7 +813,8 @@ free_all_edge_infos (void) static void build_and_record_new_cond (enum tree_code code, tree op0, tree op1, - vec<cond_equivalence> *p) + vec<cond_equivalence> *p, + bool val = true) { cond_equivalence c; struct hashable_expr *cond = &c.cond; @@ -826,7 +827,7 @@ build_and_record_new_cond (enum tree_code code, cond->ops.binary.opnd0 = op0; cond->ops.binary.opnd1 = op1; - c.value = boolean_true_node; + c.value = val ? boolean_true_node : boolean_false_node; p->safe_push (c); } @@ -865,6 +866,8 @@ record_conditions (struct edge_info *edge_info, tree cond, tree inverted) op0, op1, &edge_info->cond_equivalences); build_and_record_new_cond (NE_EXPR, op0, op1, &edge_info->cond_equivalences); + build_and_record_new_cond (EQ_EXPR, op0, op1, + &edge_info->cond_equivalences, false); break; case GE_EXPR: |