1 files changed, 33 insertions, 0 deletions
diff --git a/test/CodeGen/attr-no-tail.c b/test/CodeGen/attr-no-tail.c
new file mode 100644
index 000000000000..1c9aca6edf83
--- /dev/null
+++ b/test/CodeGen/attr-no-tail.c
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -o - | FileCheck %s
+
+// CHECK: %{{[a-z0-9]+}} = notail call i32 @callee0(i32 %
+// CHECK: %{{[a-z0-9]+}} = notail call i32 @callee1(i32 %
+
+// Check that indirect calls do not have the notail marker.
+// CHECK: store i32 (i32)* @callee1, i32 (i32)** [[ALLOCA1:%[A-Za-z0-9]+]], align 8
+// CHECK: [[INDIRFUNC:%[0-9]+]] = load i32 (i32)*, i32 (i32)** [[ALLOCA1]], align 8
+// CHECK: %{{[a-z0-9]+}} = call i32 [[INDIRFUNC]](i32 %{{[0-9]+}}
+
+// CHECK: %{{[a-z0-9]+}} = call i32 @callee2(i32 %
+
+int callee0(int a) __attribute__((not_tail_called)) {
+  return a + 1;
+}
+
+int callee1(int) __attribute__((not_tail_called));
+
+int callee2(int);
+
+typedef int (*FuncTy)(int);
+
+int foo0(int a) {
+  if (a > 1)
+    return callee0(a);
+  if (a == 1)
+    return callee1(a);
+  if (a < 0) {
+    FuncTy F = callee1;
+    return (*F)(a);
+  }
+  return callee2(a);
+}