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106 lines
4.7 KiB
C++
106 lines
4.7 KiB
C++
// RUN: %clang_cc1 -O3 -triple %itanium_abi_triple \
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// RUN: -emit-llvm -o - %s \
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// RUN: | FileCheck -check-prefixes=COMMON,CHECK %s
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// RUN: %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -ffp-exception-behavior=strict -O3 \
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// RUN: -triple %itanium_abi_triple -emit-llvm -o - %s \
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// RUN: | FileCheck -check-prefixes=COMMON,STRICT %s
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// Is FP_CONTRACT honored in a simple case?
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float fp_contract_1(float a, float b, float c) {
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// COMMON: _Z13fp_contract_1fff
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// CHECK: %[[M:.+]] = fmul contract float %a, %b
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// CHECK-NEXT: fadd contract float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call contract float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call contract float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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#pragma clang fp contract(fast)
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return a * b + c;
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}
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// Is FP_CONTRACT state cleared on exiting compound statements?
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float fp_contract_2(float a, float b, float c) {
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// COMMON: _Z13fp_contract_2fff
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// CHECK: %[[M:.+]] = fmul float %a, %b
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// CHECK-NEXT: fadd float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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{
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#pragma clang fp contract(fast)
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}
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return a * b + c;
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}
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// Does FP_CONTRACT survive template instantiation?
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class Foo {};
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Foo operator+(Foo, Foo);
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template <typename T>
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T template_muladd(T a, T b, T c) {
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#pragma clang fp contract(fast)
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return a * b + c;
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}
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float fp_contract_3(float a, float b, float c) {
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// COMMON: _Z13fp_contract_3fff
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// CHECK: %[[M:.+]] = fmul contract float %a, %b
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// CHECK-NEXT: fadd contract float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call contract float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call contract noundef float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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return template_muladd<float>(a, b, c);
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}
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template <typename T>
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class fp_contract_4 {
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float method(float a, float b, float c) {
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#pragma clang fp contract(fast)
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return a * b + c;
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}
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};
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template class fp_contract_4<int>;
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// COMMON: _ZN13fp_contract_4IiE6methodEfff
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// CHECK: %[[M:.+]] = fmul contract float %a, %b
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// CHECK-NEXT: fadd contract float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call contract float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call contract float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// Check file-scoped FP_CONTRACT
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#pragma clang fp contract(fast)
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float fp_contract_5(float a, float b, float c) {
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// COMMON: _Z13fp_contract_5fff
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// CHECK: %[[M:.+]] = fmul contract float %a, %b
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// CHECK-NEXT: fadd contract float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call contract float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call contract float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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return a * b + c;
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}
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// Verify that we can handle multiple flags on the same pragma
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#pragma clang fp contract(fast) contract(off)
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float fp_contract_6(float a, float b, float c) {
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// COMMON: _Z13fp_contract_6fff
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// CHECK: %[[M:.+]] = fmul float %a, %b
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// CHECK-NEXT: fadd float %[[M]], %c
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// STRICT: %[[M:.+]] = tail call float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// STRICT-NEXT: tail call float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata !"round.tonearest", metadata !"fpexcept.strict")
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return a * b + c;
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}
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#pragma clang fp contract(fast)
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float fp_contract_7(float a) {
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// COMMON: _Z13fp_contract_7f
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// CHECK: tail call contract float @llvm.sqrt.f32(float %a)
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// STRICT: tail call contract float @llvm.experimental.constrained.sqrt.f32(float %a, metadata !"round.tonearest", metadata !"fpexcept.strict")
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return __builtin_sqrtf(a);
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}
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float fp_contract_8(float a) {
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// COMMON: _Z13fp_contract_8f
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// CHECK: tail call float @llvm.sqrt.f32(float %a)
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// STRICT: tail call float @llvm.experimental.constrained.sqrt.f32(float %a, metadata !"round.tonearest", metadata !"fpexcept.strict")
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#pragma clang fp contract(off)
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return __builtin_sqrtf(a);
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}
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