1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -o - | FileCheck %s
2
3 void t1() __attribute__((naked));
4
5 // Basic functionality check
6 // (Note that naked needs to imply noinline to work properly.)
7 // CHECK: define void @t1() [[NAKED_OPTNONE:#[0-9]+]] {
t1()8 void t1()
9 {
10 }
11
12 // Make sure this doesn't explode in the verifier.
13 // (It doesn't really make sense, but it isn't invalid.)
14 // CHECK: define void @t2() [[NAKED:#[0-9]+]] {
t2()15 __attribute((naked, always_inline)) void t2() {
16 }
17
18 // Make sure not to generate prolog or epilog for naked functions.
t3(int x)19 __attribute((naked)) void t3(int x) {
20 // CHECK: define void @t3(i32 %0)
21 // CHECK-NOT: alloca
22 // CHECK-NOT: store
23 // CHECK: unreachable
24 }
25
26 // CHECK: attributes [[NAKED_OPTNONE]] = { naked noinline nounwind optnone{{.*}} }
27 // CHECK: attributes [[NAKED]] = { naked noinline nounwind{{.*}} }
28