[gcc r16-9313] testsuite: arm: xfail predcom-8.c test in hard float without MVE [PR118407]

https://gcc.gnu.org/g:04549eb0bea2b33f0478e2f0c2a57b1febb6d63e

commit r16-9313-g04549eb0bea2b33f0478e2f0c2a57b1febb6d63e
Author: Torbjörn SVENSSON <[email protected]>
Date:   Tue Jul 14 10:22:06 2026 +0200

    testsuite: arm: xfail predcom-8.c test in hard float without MVE [PR118407]
    
    In r15-6807-g68326d5d1a593d, more early break loops were vectorized.
    This change causes the test to fail:
    
    $ arm-none-eabi-gcc gcc.dg/tree-ssa/predcom-8.c \
        -mthumb -march=armv7ve+neon -mtune=cortex-a7 -mfloat-abi=hard -mfpu=auto \
        -O3 -fdump-tree-pcom-details-blocks -S -o predcom-8.s && grep "Invalid sum" predcom-8.*.pcom
    ;;   Invalid sum of incoming counts 267993001 (estimated locally, freq 2.3331), should be 234459439 (estimated locally, freq 2.0412)
    ;;   Invalid sum of incoming counts 31724316 (estimated locally, freq 0.2762), should be 78153146 (estimated locally, freq 0.6804)
    ;;   Invalid sum of incoming counts 37162368 (estimated locally, freq 0.3235), should be 67298542 (estimated locally, freq 0.5859)
    ;;   Invalid sum of incoming counts 487993506 (estimated locally, freq 4.2485), should be 471089795 (estimated locally, freq 4.1013)
    ;;   Invalid sum of incoming counts 140991263 (estimated locally, freq 1.2275), should be 114863531 (estimated locally, freq 1.0000)
    
    The failures only happens for non-MVE targets in hard float ABI, thus
    xfail test for these targets.
    
    gcc/testsuite/ChangeLog:
    
            PR testsuite/118407
            * gcc.dg/tree-ssa/predcom-8.c: Xfail test for arm*-*-* in hard
            float ABI without MVE.
    
    Signed-off-by: Torbjörn SVENSSON <[email protected]>
    (cherry picked from commit 383854a7016ad2381165b66cba79dd88f24678ab)

Diff:
---
 gcc/testsuite/gcc.dg/tree-ssa/predcom-8.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-8.c b/gcc/testsuite/gcc.dg/tree-ssa/predcom-8.c
index dcddf5731458..d2f0ae0df6f0 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-8.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-8.c
@@ -10,4 +10,4 @@ int is_sorted(int *a, int n)
 }
 
 /* { dg-final { scan-tree-dump "Executing predictive commoning without unrolling" "pcom" } } */
-/* { dg-final { scan-tree-dump-not "Invalid sum" "pcom" } } */
+/* { dg-final { scan-tree-dump-not "Invalid sum" "pcom" { xfail { arm*-*-* && { hard_float && { ! arm_mve } } } } } } */