| 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 | |