[gcc(refs/users/aoliva/heads/testme)] testsuite: ppc: bump darn-3.c to -O3 for unrolling [PR115825]

[Alexandre Oliva]

https://gcc.gnu.org/g:b27cc970dc6466d65a3ecfaa9b43b143417a8d90

commit b27cc970dc6466d65a3ecfaa9b43b143417a8d90
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Tue Mar 10 04:21:14 2026 -0300

    testsuite: ppc: bump darn-3.c to -O3 for unrolling [PR115825]
    
    Since the unrolling heuristics changed, darn-3.c hasn't got the
    expected unrolling at -O2.  It does at -O3, so adjust the
    expectations.
    
    
    for  gcc/testsuite/ChangeLog
    
            * gcc.target/powerpc/darn-3.c: Bump to -O3.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/darn-3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.target/powerpc/darn-3.c b/gcc/testsuite/gcc.target/powerpc/darn-3.c
index 4c68fad80d5d..27df2526898b 100644
--- a/gcc/testsuite/gcc.target/powerpc/darn-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/darn-3.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
 /* { dg-skip-if "" { powerpc*-*-aix* } } */
-/* { dg-options "-O2 -mdejagnu-cpu=power9" } */
+/* { dg-options "-O3 -mdejagnu-cpu=power9" } */
 
 static int darn32(void) { return __builtin_darn_32(); }