[gcc r14-4540] RISC-V Regression: Fix FAIL of pr65947-8.c for RVV

[Pan Li]

https://gcc.gnu.org/g:8a361405375a82ed1975c72b9900a6775e0de037

commit r14-4540-g8a361405375a82ed1975c72b9900a6775e0de037
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Tue Oct 10 20:55:47 2023 +0800

    RISC-V Regression: Fix FAIL of pr65947-8.c for RVV
    
    This test is testing fold_extract_last pattern so it's more reasonable use
    vect_fold_extract_last instead of specifying targets.
    
    This is the vect_fold_extract_last property:
    proc check_effective_target_vect_fold_extract_last { } {
        return [expr { [check_effective_target_aarch64_sve]
                       || [istarget amdgcn*-*-*]
                       || [check_effective_target_riscv_v] }]
    }
    
    include ARM SVE/GCN/RVV.
    
    It perfectly matches what we want and more reasonable, better maintainment.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/vect/pr65947-8.c: Use vect_fold_extract_last.

Diff:
---
 gcc/testsuite/gcc.dg/vect/pr65947-8.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/vect/pr65947-8.c b/gcc/testsuite/gcc.dg/vect/pr65947-8.c
index d0426792e35..9ced4dbb69f 100644
--- a/gcc/testsuite/gcc.dg/vect/pr65947-8.c
+++ b/gcc/testsuite/gcc.dg/vect/pr65947-8.c
@@ -41,6 +41,6 @@ main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-not "LOOP VECTORIZED" "vect" { target { ! { amdgcn*-*-* || aarch64_sve } } } } } */
-/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target { amdgcn*-*-* || aarch64_sve } } } } */
-/* { dg-final { scan-tree-dump "multiple types in double reduction or condition reduction" "vect" { target { ! { amdgcn*-*-* || aarch64_sve } } } } } */
+/* { dg-final { scan-tree-dump-not "LOOP VECTORIZED" "vect" { target { ! { vect_fold_extract_last } } } } } */
+/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target { vect_fold_extract_last } } } } */
+/* { dg-final { scan-tree-dump "multiple types in double reduction or condition reduction" "vect" { target { ! { vect_fold_extract_last } } } } } */