This fixes another syntax error in slp-3.c. I missed a '{ ... }' in
order to properly exclude s390_vx.
gcc/testsuite/ChangeLog:
* gcc.dg/vect/slp-3.c: Add '{ ... }'.
/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { target { { ! { vect_partial_vectors || vect32 } } || s390_vx } } } } */
/* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect" { target { { vect_partial_vectors || vect32 } && { ! s390_vx } } } } } */
/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 3 "vect" { target { { ! { vect_partial_vectors || vect32 } } || s390_vx } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" { target { vect_partial_vectors || vect32 } && { ! s390_vx } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" { target { { vect_partial_vectors || vect32 } && { ! s390_vx } } } } } */