testsuite/96147 - scan for vectorized load

This changes gcc.dg/vect/bb-slp-9.c to scan for a vectorized load
instead of a vectorized BB which then correctly captures the
unaligned load we try to test and not some intermediate built
from scalar vector.

2021-01-15  Richard Biener  <rguenther@suse.de>

	PR testsuite/96147
	* gcc.dg/vect/bb-slp-9.c: Scan for a vector load transform.

gcc/testsuite/gcc.dg/vect/bb-slp-9.c

@@ -46,5 +46,5 @@ int main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "optimized: basic block" 1 "slp2"  { xfail  { vect_no_align && { ! vect_hw_misalign } } } } } */
+/* { dg-final { scan-tree-dump-times "transform load" 1 "slp2"  { xfail  { vect_no_align && { ! vect_hw_misalign } } } } } */