[Committed] RISC-V: Add missing dump check of pr112438.c

[Juzhe-Zhong]

Notice the dump check is missing, add it.

Committed as it is obvious.
gcc/testsuite/ChangeLog:

        * gcc.target/riscv/rvv/autovec/pr112438.c: Add missing dump check.

---
 gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112438.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112438.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112438.c
index 51f90df38a0..d6770af1842 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112438.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112438.c
@@ -31,3 +31,4 @@ float * __restrict out, float x)
 }
 
 /* We don't want to see vect_vec_iv_.21_25 + { POLY_INT_CST [4, 4], ... }.  */
+/* { dg-final { scan-tree-dump-not "\\+ \{ POLY_INT_CST" "optimized" } } */
-- 
2.36.3