VAX: Add a test for the SImode `ffs' operation

	gcc/testsuite/
	* gcc.target/vax/ffssi.c: New test.

diff --git a/gcc/testsuite/gcc.target/vax/ffssi.c b/gcc/testsuite/gcc.target/vax/ffssi.c
new file mode 100644 (file)
index 0000000..3e7a3c2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/vax/ffssi.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+
+int
+ffssi (int x)
+{
+  return __builtin_ffs (x);
+}
+
+/* Expect assembly like:
+
+       ffs $0,$32,%r1,%r0
+       jneq .L2
+       mnegl $1,%r0
+.L2:
+       incl %r0
+
+ */
+
+/* { dg-final { scan-assembler "\tffs \\\$0,\\\$32," } } */