[gcc r16-6700] testsuite: Disable vector-compare-1.C for arm targets [PR121752]

[Andrew Pinski]

https://gcc.gnu.org/g:e63baf1db6888a5e245f3fdf90d4db39baef1dad

commit r16-6700-ge63baf1db6888a5e245f3fdf90d4db39baef1dad
Author: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
Date:   Sun Jan 11 19:57:20 2026 -0800

    testsuite: Disable vector-compare-1.C for arm targets [PR121752]
    
    So arm is a bit special, non_strict_align is sometimes true but
    it does not represent the true value of STRICT_ALIGN inside the compiler,
    so this testcase fails. This disables the testcase for arm targets where
    STRICT_ALIGN is always true even when there is unaligned loads.
    
    Pushed as obvious after testing on x86_64 and arm-eabi (with -march=armv7) to make
    sure the testcase no longer run on arm.
    
            PR testsuite/121752
    gcc/testsuite/ChangeLog:
    
            * g++.dg/tree-ssa/vector-compare-1.C: Disable for arm targets.
    
    Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>

Diff:
---
 gcc/testsuite/g++.dg/tree-ssa/vector-compare-1.C | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/g++.dg/tree-ssa/vector-compare-1.C b/gcc/testsuite/g++.dg/tree-ssa/vector-compare-1.C
index e3f5421aba43..af280f62a91a 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/vector-compare-1.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/vector-compare-1.C
@@ -1,4 +1,6 @@
-// { dg-do compile { target { c++11 && non_strict_align } } }
+// Even though arm sometimes has unaligned loads, memcmp is not transformed so disable
+// the test for arm targets.
+// { dg-do compile { target { c++11 && { non_strict_align && { ! { arm*-*-* } } } } } }
 // { dg-options "-O2 -fdump-tree-optimized" }
 
 // PR tree-optimization/116651