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af57dbf12e
Add options to control floating point behavior: trapping and
exception behavior, rounding, and control of optimizations that affect
floating point calculations. More details in UsersManual.rst.
Reviewers: rjmccall
Differential Revision: https://reviews.llvm.org/D62731
24 lines
1.7 KiB
C
24 lines
1.7 KiB
C
// RUN: %clang_cc1 -ftrapping-math -frounding-math -ffp-exception-behavior=strict -emit-llvm -o - %s | FileCheck %s -check-prefix=FPMODELSTRICT
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// RUN: %clang_cc1 -ffp-contract=fast -emit-llvm -o - %s | FileCheck %s -check-prefix=PRECISE
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// RUN: %clang_cc1 -ffast-math -ffp-contract=fast -emit-llvm -o - %s | FileCheck %s -check-prefix=FAST
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// RUN: %clang_cc1 -ffast-math -emit-llvm -o - %s | FileCheck %s -check-prefix=FAST
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// RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=ignore -emit-llvm -o - %s | FileCheck %s -check-prefix=FAST
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// RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=strict -emit-llvm -o - %s | FileCheck %s -check-prefix=EXCEPT
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// RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=maytrap -emit-llvm -o - %s | FileCheck %s -check-prefix=MAYTRAP
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float f0, f1, f2;
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void foo() {
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// CHECK-LABEL: define {{.*}}void @foo()
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// MAYTRAP: llvm.experimental.constrained.fadd.f32(float %0, float %1, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
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// EXCEPT: llvm.experimental.constrained.fadd.f32(float %0, float %1, metadata !"round.tonearest", metadata !"fpexcept.strict")
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// FPMODELSTRICT: llvm.experimental.constrained.fadd.f32(float %0, float %1, metadata !"round.dynamic", metadata !"fpexcept.strict")
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// STRICTEXCEPT: llvm.experimental.constrained.fadd.f32(float %0, float %1, metadata !"round.dynamic", metadata !"fpexcept.strict")
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// STRICTNOEXCEPT: llvm.experimental.constrained.fadd.f32(float %0, float %1, metadata !"round.dynamic", metadata !"fpexcept.ignore")
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// PRECISE: fadd contract float %0, %1
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// FAST: fadd fast
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f0 = f1 + f2;
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// CHECK: ret
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}
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