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
