[gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] TEST: Fix dump FAIL for RVV (RISCV-V vector)

[gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] TEST: Fix dump FAIL for RVV (RISCV-V vector)

[Jeff Law]

https://gcc.gnu.org/g:1e9c53e625a7dec7501a8c04eedc45ce8cb6c01b

commit 1e9c53e625a7dec7501a8c04eedc45ce8cb6c01b
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Sun Oct 8 16:20:05 2023 +0800

    TEST: Fix dump FAIL for RVV (RISCV-V vector)
    
    As this showed: https://godbolt.org/z/3K9oK7fx3
    
    ARM SVE 2 times for FOLD_EXTRACT_LAST wheras RVV 4 times.
    
    This is because RISC-V doesn't enable vec_pack_trunc so we will failed conversion and fold_extract_last at the first time analysis.
    Then we succeed at the second time.
    
    So RVV has 4 times of showing "FOLD_EXTRACT_LAST:.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/vect/vect-cond-reduc-4.c: Add vect_pack_trunc variant.
    
    (cherry picked from commit 873586ebc565b6c8abbaaba58b900dbe984bf64f)

Diff:
---
 gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c b/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
index 8820075b1dc..8ea8c538713 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
@@ -42,6 +42,7 @@ main (void)
 }
 
 /* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 2 "vect" } } */
-/* { dg-final { scan-tree-dump-times "optimizing condition reduction with FOLD_EXTRACT_LAST" 2 "vect" { target vect_fold_extract_last } } } */
+/* { dg-final { scan-tree-dump-times "optimizing condition reduction with FOLD_EXTRACT_LAST" 2 "vect" { target { vect_fold_extract_last && vect_pack_trunc } } } } */
+/* { dg-final { scan-tree-dump-times "optimizing condition reduction with FOLD_EXTRACT_LAST" 4 "vect" { target { { vect_fold_extract_last } && { ! vect_pack_trunc } } } } } */
 /* { dg-final { scan-tree-dump-times "condition expression based on integer induction." 2 "vect" { target { ! vect_fold_extract_last } } } } */