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authordorit <dorit@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-28 15:12:49 +0000
committerdorit <dorit@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-28 15:12:49 +0000
commit7e5716af1a26da6ae7a83d0a088fdc2b3cc02fb6 (patch)
treefdb8de2cbf7dd17ca5af05ea3b9e411ebaaebcac /gcc/tree-vectorizer.c
parentcf4ad854eaf66220da0e4264f0ed53d28f7bb279 (diff)
downloadgcc-7e5716af1a26da6ae7a83d0a088fdc2b3cc02fb6.tar.gz
PR tree-optimization/22506
* tree-vectorizer.c (update_phi_nodes_for_guard2): Skip loop-closed phis whose argument is constant. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102487 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vectorizer.c')
-rw-r--r--gcc/tree-vectorizer.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index 4a9bbe8f49c..b38156aab1a 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -640,6 +640,10 @@ slpeel_update_phi_nodes_for_guard2 (edge guard_edge, struct loop *loop,
{
orig_phi = update_phi;
orig_def = PHI_ARG_DEF_FROM_EDGE (orig_phi, e);
+ /* This loop-closed-phi actually doesn't represent a use
+ out of the loop - the phi arg is a constant. */
+ if (TREE_CODE (orig_def) != SSA_NAME)
+ continue;
orig_def_new_name = get_current_def (orig_def);
arg = NULL_TREE;