1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtin-ffs-1.c b/gcc/testsuite/gcc.dg/builtin-ffs-1.c
new file mode 100644
index 0000000..2bf0e98
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-ffs-1.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+extern int ffs (int) __asm ("__GI_ffs") __attribute__ ((nothrow, const));
+
+int
+ffsll (long long int i)
+{
+  unsigned long long int x = i & -i;
+  
+  if (x <= 0xffffffff)
+    return ffs (i);
+  else
+    return 32 + ffs (i >> 32);
+}
+
+/* { dg-final { scan-assembler-not "\nffs\n|\nffs\[^a-zA-Z0-9_\]|\[^a-zA-Z0-9_\]ffs\n" } } */