Hi!
>From what I can see, this test has been written for a backend fix and
assumes the loop isn't vectorized (at least, it wasn't when the test was
added, it contains an early exit), but that is no longer true and because
of the vectorization it now contains an instruction which the test scans
for not being present.
I think we should just disable vectorization here.
Regtested on x86_64-linux and i686-linux, ok for trunk?
2024-01-18 Jakub Jelinek <ja...@redhat.com>
PR testsuite/113452
* gcc.target/i386/sse4_1-stv-1.c: Add -fno-tree-vectorize to
dg-options.
--- gcc/testsuite/gcc.target/i386/sse4_1-stv-1.c.jj 2022-05-31
11:33:51.603250042 +0200
+++ gcc/testsuite/gcc.target/i386/sse4_1-stv-1.c 2024-01-17
17:46:21.999689350 +0100
@@ -1,5 +1,5 @@
/* { dg-do compile { target ia32 } } */
-/* { dg-options "-O2 -msse4.1 -mstv -mno-stackrealign" } */
+/* { dg-options "-O2 -msse4.1 -mstv -mno-stackrealign -fno-tree-vectorize" } */
long long a[1024];
long long b[1024];
Jakub
