1 // RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s
2 // RUN: %clang_cc1 -O2 -fno-inline -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s
3 // RUN: %clang_cc1 -flto -O2 -fno-inline -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s -check-prefix=LTO
4
5 // Ensure that we don't emit available_externally functions at -O0.
6 // Also should not emit them at -O2, unless -flto is present in which case
7 // we should preserve them for link-time inlining decisions.
8 int x;
9
f0(int y)10 inline void f0(int y) { x = y; }
11
12 // CHECK-LABEL: define void @test()
13 // CHECK: declare void @f0(i32)
14 // LTO-LABEL: define void @test()
15 // LTO: define available_externally void @f0
test()16 void test() {
17 f0(17);
18 }
19
f1(int x)20 inline int __attribute__((always_inline)) f1(int x) {
21 int blarg = 0;
22 for (int i = 0; i < x; ++i)
23 blarg = blarg + x * i;
24 return blarg;
25 }
26
27 // CHECK: @test1
28 // LTO: @test1
test1(int x)29 int test1(int x) {
30 // CHECK: br i1
31 // CHECK-NOT: call {{.*}} @f1
32 // CHECK: ret i32
33 // LTO: br i1
34 // LTO-NOT: call {{.*}} @f1
35 // LTO: ret i32
36 return f1(x);
37 }
38