1 // RUN: %clang_cc1 -x c++-header -triple x86_64-apple-darwin11 -emit-pch -O1 -fblocks -fno-escaping-block-tail-calls -o %t %S/no-escaping-block-tail-calls.h
2 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -include-pch %t -emit-llvm -O1 -fblocks -fno-escaping-block-tail-calls -o - %s | FileCheck %s
3
4 // Check that -fno-escaping-block-tail-calls doesn't disable tail-call
5 // optimization if the block is non-escaping.
6
7 // CHECK-LABEL: define internal i32 @___ZN1S1mEv_block_invoke(
8 // CHECK: %[[CALL:.*]] = tail call i32 @_ZN1S3fooER2S0(
9 // CHECK-NEXT: ret i32 %[[CALL]]
10
test()11 void test() {
12 S s;
13 s.m();
14 }
15