Like s390, add riscv to fix the fail.
gcc/testsuite/ChangeLog:
* gcc.dg/vect/bb-slp-39.c: Add RISCV.
}
/* See that we vectorize three SLP instances. */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 3 "slp2" { target { ! s390*-*-* } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 5 "slp2" { target { s390*-*-* } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 3 "slp2" { target { ! { s390*-*-* riscv*-*-* } } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 5 "slp2" { target { s390*-*-* riscv*-*-* } } } } */