1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/test/FrontendC/2007-08-22-CTTZ.c b/llvm/test/FrontendC/2007-08-22-CTTZ.c
new file mode 100644
index 00000000000..9e74f24cdcb
--- /dev/null
+++ b/llvm/test/FrontendC/2007-08-22-CTTZ.c
@@ -0,0 +1,6 @@
+// RUN: %llvmgcc -O2 -S -o - %s | grep {llvm.cttz.i64} | count 2
+// RUN: %llvmgcc -O2 -S -o - %s | not grep {lshr}
+
+int bork(unsigned long long x) {
+  return __builtin_ctzll(x);
+}