| // RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s |
| // RUN: %clang_cc1 -O2 -fno-inline -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s |
| // RUN: %clang_cc1 -flto -O2 -fno-inline -emit-llvm -o - -triple x86_64-apple-darwin10 %s | FileCheck %s -check-prefix=LTO |
| |
| // Ensure that we don't emit available_externally functions at -O0. |
| // Also should not emit them at -O2, unless -flto is present in which case |
| // we should preserve them for link-time inlining decisions. |
| int x; |
| |
| inline void f0(int y) { x = y; } |
| |
| // CHECK-LABEL: define void @test() |
| // CHECK: declare void @f0(i32) |
| // LTO-LABEL: define void @test() |
| // LTO: define available_externally void @f0 |
| void test() { |
| f0(17); |
| } |
| |
| inline int __attribute__((always_inline)) f1(int x) { |
| int blarg = 0; |
| for (int i = 0; i < x; ++i) |
| blarg = blarg + x * i; |
| return blarg; |
| } |
| |
| // CHECK: @test1 |
| // LTO: @test1 |
| int test1(int x) { |
| // CHECK: br i1 |
| // CHECK-NOT: call {{.*}} @f1 |
| // CHECK: ret i32 |
| // LTO: br i1 |
| // LTO-NOT: call {{.*}} @f1 |
| // LTO: ret i32 |
| return f1(x); |
| } |
