Like we already do when Neon enablement does not need a compiler
option, return 0 when MVE is enabled by default.
For instance when checking for -march=armv8.1-m.main+mve.fp+fp.dp (or
-mcpu=cortex-m55), this makes the following tests UNSUPPORTED:
gcc.dg/tree-ssa/gen-vect-11.c
gcc.dg/tree-ssa/gen-vect-11a.c
gcc.dg/tree-ssa/gen-vect-11b.c
gcc.dg/tree-ssa/gen-vect-11c.c
gcc.dg/tree-ssa/gen-vect-2.c
and thus avoids
FAIL: gcc.dg/tree-ssa/gen-vect-11b.c scan-tree-dump-times vect "vectorized 0
loops" 1
FAIL: gcc.dg/tree-ssa/gen-vect-11c.c scan-tree-dump-times vect "vectorized 0
loops" 1
This may be overkill Given that all the other tests mentioned above
PASS, but this is consistent with what we already do for Neon.
gcc/testsuite/ChangeLog:
PR target/124704
* lib/target-supports.exp
(check_effective_target_vect_cmdline_neeed): Handle arm_mve
similarly to arm_neon.
---
gcc/testsuite/lib/target-supports.exp | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index 77b719138df..11b6156cc8b 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -4596,7 +4596,9 @@ proc check_effective_target_vect_cmdline_needed { } {
|| ([istarget powerpc*-*-*]
&& [check_effective_target_powerpc_altivec])
|| ([istarget sparc*-*-*] && [check_effective_target_sparc_vis])
- || ([istarget arm*-*-*] && [check_effective_target_arm_neon])
+ || ([istarget arm*-*-*] && ([check_effective_target_arm_neon]
+ || [check_effective_target_arm_mve])
+ )
|| [istarget aarch64*-*-*]
|| [istarget amdgcn*-*-*]
|| [istarget riscv*-*-*]
--
2.43.0
