[gcc r14-4541] RISC-V Regression: Fix FAIL of predcom-2.c

[Pan Li]

https://gcc.gnu.org/g:0b0fcb272b4d6e9f7c98cfbc355ca69c8a653922

commit r14-4541-g0b0fcb272b4d6e9f7c98cfbc355ca69c8a653922
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Tue Oct 10 10:58:35 2023 +0800

    RISC-V Regression: Fix FAIL of predcom-2.c
    
    Like GCN, add -fno-tree-vectorize.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/tree-ssa/predcom-2.c: Add riscv.

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

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c b/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
index f19edd4cd74..681ff7c696b 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
@@ -1,6 +1,6 @@
 /* { dg-do run } */
 /* { dg-options "-O2 -funroll-loops --param max-unroll-times=8 -fpredictive-commoning -fdump-tree-pcom-details-blocks -fno-tree-pre" } */
-/* { dg-additional-options "-fno-tree-vectorize" { target amdgcn-*-* } } */
+/* { dg-additional-options "-fno-tree-vectorize" { target amdgcn-*-* riscv*-*-* } } */
 
 void abort (void);