diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr22506.c | 12 | ||||
| -rw-r--r-- | gcc/tree-vectorizer.c | 4 |
4 files changed, 27 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index df7cb00..404286c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-07-28 Dorit Nuzman <dorit@il.ibm.com> + + PR tree-optimization/22506 + * tree-vectorizer.c (update_phi_nodes_for_guard2): Skip loop-closed + phis whose argument is constant. + 2005-07-28 J"orn Rennecke <joern.rennecke@st.com> PR rtl-optimization/18992 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 89f6ea2..c979383 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2005-07-28 Dorit Nuzman <dorit@il.ibm.com> + + PR tree-optimization/22506 + * gcc.dg/vect/ps22506.c: New test. + 2005-07-28 Jakub Jelinek <jakub@redhat.com> PR target/21149 diff --git a/gcc/testsuite/gcc.dg/vect/pr22506.c b/gcc/testsuite/gcc.dg/vect/pr22506.c new file mode 100644 index 0000000..fa22118 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr22506.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target vect_int } */ + +float x[3]; + +void foo() +{ + int i; + + for (i=0; i<5; ++i) x[i]=0; + for (i=0; i<4; ++i) ; +} diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c index 4a9bbe8..b38156a 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; |