This avoids vectorizing and thus chaning loop trip count.
Tested on x86_64, applied.
Richard.
2015-01-16 Richard Biener <rguent...@suse.de>
PR tree-optimization/61743
* gcc.dg/tree-ssa/pr61743-1.c: Add -fno-tree-vectorize.
* gcc.dg/tree-ssa/pr61743-2.c: Likewise.
Index: gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c
===================================================================
--- gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c (revision 219714)
+++ gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c (working copy)
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O3 -funroll-loops -fdump-tree-cunroll-details" } */
+/* { dg-options "-O3 -funroll-loops -fno-tree-vectorize
-fdump-tree-cunroll-details" } */
#define N 8
#define M 14
Index: gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c
===================================================================
--- gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c (revision 219714)
+++ gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c (working copy)
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O3 -funroll-loops -fdump-tree-cunroll-details" } */
+/* { dg-options "-O3 -funroll-loops -fno-tree-vectorize
-fdump-tree-cunroll-details" } */
#define N 8
#define M 14
