[PATCH] test: Fix bb-slp-33.c for RVV

[Juzhe-Zhong]

As https://godbolt.org/z/hPsqahEa5 shows.
RVV failed dump check since "vectorizing stmts using SLP" shows 3 times instead 
of 2.

The root cause is this code in main:

  if (a[0] != 1
      || a[1] != 2
      || a[2] != 3
      || a[3] != 4
      || a[4] != 7
      || a[5] != 0
      || a[6] != 0
      || a[7] != 0
      || a[8] != 0)
    abort ();

is vectorized. So add -fno-tree-vectorize avoid the confusing check.

gcc/testsuite/ChangeLog:

        * gcc.dg/vect/bb-slp-33.c: Add -fno-tree-vectorize to main.

---
 gcc/testsuite/gcc.dg/vect/bb-slp-33.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-33.c 
b/gcc/testsuite/gcc.dg/vect/bb-slp-33.c
index bbb13ef798e..f44cbdcfbcf 100644
--- a/gcc/testsuite/gcc.dg/vect/bb-slp-33.c
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-33.c
@@ -17,7 +17,8 @@ test(int *__restrict__ a, int *__restrict__ b)
   a[8] = 0;
 }
 
-int main()
+int __attribute__((optimize(("-fno-tree-vectorize"))))
+main()
 {
   int a[9];
   int b[4];
-- 
2.36.3