Adjust expected output for bb-slp-21.c (PR 92527)

After r278246, we can try building the out[] store value from scalars
if the target has no multiplication support.  That's not necessarily
a good thing, but like most of vect/, this test is run with the cost
model disabled.

2019-11-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	PR testsuite/92527
	* gcc.dg/vect/bb-slp-21.c: Expect both SLP groups to be vectorized,
	regardless of whether the target supports multiplication.

From-SVN: r278531

gcc/testsuite/ChangeLog

+2019-11-20  Richard Sandiford  <richard.sandiford@arm.com>
+
+	PR testsuite/92527
+	* gcc.dg/vect/bb-slp-21.c: Expect both SLP groups to be vectorized,
+	regardless of whether the target supports multiplication.
+
 2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* g++.dg/parse/error43.C: Adjust expected error.

gcc/testsuite/gcc.dg/vect/bb-slp-21.c

@@ -64,6 +64,5 @@ int main (void)
 }
 
 /* { dg-final { scan-tree-dump-times "basic block vectorized" 1 "slp2"  } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "slp2" { target { ! {vect_int_mult } } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "slp2" { target vect_int_mult } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "slp2" } } */