Implementation of __builtin_ctlz.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51595 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/builtin-count-zeros.c b/test/CodeGen/builtin-count-zeros.c
new file mode 100644
index 0000000..26b139a
--- /dev/null
+++ b/test/CodeGen/builtin-count-zeros.c
@@ -0,0 +1,4 @@
+// RUN: clang -emit-llvm %s -o - | grep 'cttz' | count 2
+// RUN: clang -emit-llvm %s -o - | grep 'ctlz' | count 2
+
+int a(int a) {return __builtin_ctz(a) + __builtin_clz(a);}