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 | |
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 |
16 | void test() { |
17 | f0(17); |
18 | } |
19 | |
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 |
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 | |