Hi!
-fprefetch-loop-arrays isn't supported on ia32 with just -march=i386 and
similar, the following patch adds extra options similar testcases use.
2022-07-27 Jakub Jelinek <ja...@redhat.com>
PR tree-optimization/106397
* gcc.dg/pr106397.c: For ia32, add dg-additional-options
-march=i686 -msse.
--- gcc/testsuite/gcc.dg/pr106397.c.jj 2022-07-26 10:32:23.962268163 +0200
+++ gcc/testsuite/gcc.dg/pr106397.c 2022-07-27 10:55:49.492975896 +0200
@@ -1,5 +1,6 @@
/* { dg-do compile } */
/* { dg-options "-O3 -fprefetch-loop-arrays --param l2-cache-size=0 --param
prefetch-latency=3 -fprefetch-loop-arrays" } */
+/* { dg-additional-options "-march=i686 -msse" { target { { i?86-*-*
x86_64-*-* } && ia32 } } } */
int
bar (void)
Jakub
