Ping?
https://gcc.gnu.org/pipermail/gcc-patches/2021-March/566524.html
The loop we're supposed to try to vectorize in
gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c is turned into a memset
before the vectorizer runs.
Various other tests in this set have already run into this, and the
solution has been to disable this loop distribution transformation,
enabled at -O2, so that the vectorizer gets a chance to transform the
loop and, in this testcase, fail to do so.
Regstrapped on x86_64-linux-gnu and ppc64el-linux-gnu. Also tested with
gcc-13 on ppc64-vx7r2 and ppc-vx7r2. Ok to install?
for gcc/testsuite/ChangeLog
* gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c: Disable
ldist.
---
.../gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
b/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
index 454a714a30916..90b5d5a7f400b 100644
--- a/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
+++ b/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
@@ -1,4 +1,5 @@
/* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-fno-tree-loop-distribute-patterns" } */
#include <stdarg.h>
#include "../../tree-vect.h"
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
More tolerance and less prejudice are key for inclusion and diversity
Excluding neuro-others for not behaving ""normal"" is *not* inclusive
