--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/tree-ssa/popcount2.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,28 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -fno-tree-ch -fdump-tree-optimized" } */
+
+int
+__attribute__ ((noinline, noclone))
+foo (long b)
+{
+    int c = 0;
+
+    while (b) {
+	b &= b - 1;
+	c++;
+    }
+    return c;
+}
+
+int main()
+{
+  if (foo (7) != 3)
+   __builtin_abort ();
+  if (foo (0) != 0)
+   __builtin_abort ();
+  if (foo (0xff) != 8)
+   __builtin_abort ();
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "__builtin_popcount" 1 "optimized" } } */