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Diffstat (limited to 'test/CodeGen/fp-contract-fast-pragma.cpp')
-rw-r--r-- | test/CodeGen/fp-contract-fast-pragma.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/test/CodeGen/fp-contract-fast-pragma.cpp b/test/CodeGen/fp-contract-fast-pragma.cpp new file mode 100644 index 000000000000..c2e52f070e93 --- /dev/null +++ b/test/CodeGen/fp-contract-fast-pragma.cpp @@ -0,0 +1,69 @@ +// RUN: %clang_cc1 -O3 -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s + +// Is FP_CONTRACT honored in a simple case? +float fp_contract_1(float a, float b, float c) { +// CHECK: _Z13fp_contract_1fff +// CHECK: %[[M:.+]] = fmul contract float %a, %b +// CHECK-NEXT: fadd contract float %[[M]], %c +#pragma clang fp contract(fast) + 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 clang fp contract(fast) + } + return a * b + c; +} + +// Does FP_CONTRACT survive template instantiation? +class Foo {}; +Foo operator+(Foo, Foo); + +template <typename T> +T template_muladd(T a, T b, T c) { +#pragma clang fp contract(fast) + return a * b + c; +} + +float fp_contract_3(float a, float b, float c) { + // CHECK: _Z13fp_contract_3fff + // CHECK: %[[M:.+]] = fmul contract float %a, %b + // CHECK-NEXT: fadd contract float %[[M]], %c + return template_muladd<float>(a, b, c); +} + +template <typename T> +class fp_contract_4 { + float method(float a, float b, float c) { +#pragma clang fp contract(fast) + return a * b + c; + } +}; + +template class fp_contract_4<int>; +// CHECK: _ZN13fp_contract_4IiE6methodEfff +// CHECK: %[[M:.+]] = fmul contract float %a, %b +// CHECK-NEXT: fadd contract float %[[M]], %c + +// Check file-scoped FP_CONTRACT +#pragma clang fp contract(fast) +float fp_contract_5(float a, float b, float c) { + // CHECK: _Z13fp_contract_5fff + // CHECK: %[[M:.+]] = fmul contract float %a, %b + // CHECK-NEXT: fadd contract float %[[M]], %c + return a * b + c; +} + +// Verify that we can handle multiple flags on the same pragma +#pragma clang fp contract(fast) 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; +} |