| // RUN: %clang_cc1 -O3 -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s |
| |
| // Is FP_CONTRACT is honored in a simple case? |
| float fp_contract_1(float a, float b, float c) { |
| // CHECK: _Z13fp_contract_1fff |
| // CHECK: tail call float @llvm.fmuladd |
| #pragma STDC FP_CONTRACT ON |
| return a * b + c; |
| } |
| |
| // Is FP_CONTRACT state cleared on exiting compound statements? |
| float fp_contract_2(float a, float b, float c) { |
| // CHECK: _Z13fp_contract_2fff |
| // CHECK: %[[M:.+]] = fmul float %a, %b |
| // CHECK-NEXT: fadd float %[[M]], %c |
| { |
| #pragma STDC FP_CONTRACT ON |
| } |
| return a * b + c; |
| } |
| |
| // Does FP_CONTRACT survive template instatiation? |
| class Foo {}; |
| Foo operator+(Foo, Foo); |
| |
| template <typename T> |
| T template_muladd(T a, T b, T c) { |
| #pragma STDC FP_CONTRACT ON |
| return a * b + c; |
| } |
| |
| float fp_contract_3(float a, float b, float c) { |
| // CHECK: _Z13fp_contract_3fff |
| // CHECK: tail call float @llvm.fmuladd |
| return template_muladd<float>(a, b, c); |
| } |
| |
| template<typename T> class fp_contract_4 { |
| float method(float a, float b, float c) { |
| #pragma STDC FP_CONTRACT ON |
| return a * b + c; |
| } |
| }; |
| |
| template class fp_contract_4<int>; |
| // CHECK: _ZN13fp_contract_4IiE6methodEfff |
| // CHECK: tail call float @llvm.fmuladd |
| |
| // Check file-scoped FP_CONTRACT |
| #pragma STDC FP_CONTRACT ON |
| float fp_contract_5(float a, float b, float c) { |
| // CHECK: _Z13fp_contract_5fff |
| // CHECK: tail call float @llvm.fmuladd |
| return a * b + c; |
| } |
| |
| #pragma STDC FP_CONTRACT OFF |
| float fp_contract_6(float a, float b, float c) { |
| // CHECK: _Z13fp_contract_6fff |
| // CHECK: %[[M:.+]] = fmul float %a, %b |
| // CHECK-NEXT: fadd float %[[M]], %c |
| return a * b + c; |
| } |
| |