This avoids bigger than V2DF vectorization which disturbs the ability
to consistently check for the vectorization result after us now
also vectorizing the V2DF tail of a V4DF vectorization variant.
tested on x86_64-unknown-linux-gnu, pushed.
2021-09-28 Richard Biener <rguent...@suse.de>
* gcc.dg/vect/bb-slp-pr65935.c: Prefer 128bit vectorization
on x86.
---
gcc/testsuite/gcc.dg/vect/bb-slp-pr65935.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-pr65935.c
b/gcc/testsuite/gcc.dg/vect/bb-slp-pr65935.c
index 5d80f560f56..ee121364910 100644
--- a/gcc/testsuite/gcc.dg/vect/bb-slp-pr65935.c
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pr65935.c
@@ -1,5 +1,6 @@
/* { dg-additional-options "-O3" } */
/* { dg-require-effective-target vect_double } */
+/* { dg-additional-options "-mprefer-vector-width=128" { target x86_64-*-*
i?86-*-* } } */
#include "tree-vect.h"
--
2.31.1
