cab9c02bd9
-ffp-model=strict -ffp-model=fast will still enable strict exception handling behavior, therefore clang still emits constrained FP operations in IR. -ffp-model=fast -ffp-model=strict emits two warnings: one for strict overriding fast, the other for strict overriding strict, which is confusing. Reviewed By: zahiraam Differential Revision: https://reviews.llvm.org/D137618
49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
// REQUIRES: x86-registered-target
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// RUN: %clang -S -emit-llvm -ffp-model=fast -emit-llvm %s -o - \
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// RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-FAST
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// RUN: %clang -S -emit-llvm -ffp-model=precise %s -o - \
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// RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-PRECISE
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// RUN: %clang -S -emit-llvm -ffp-model=strict %s -o - \
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// RUN: -target x86_64 | FileCheck %s --check-prefixes=CHECK,CHECK-STRICT
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// RUN: %clang -S -emit-llvm -ffp-model=strict -ffast-math \
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// RUN: -target x86_64 %s -o - | FileCheck %s \
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// RUN: --check-prefixes CHECK,CHECK-STRICT-FAST
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// RUN: %clang -S -emit-llvm -ffp-model=precise -ffast-math \
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// RUN: %s -o - | FileCheck %s --check-prefixes CHECK,CHECK-FAST1
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float mymuladd(float x, float y, float z) {
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// CHECK: define{{.*}} float @mymuladd
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return x * y + z;
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// CHECK-FAST: fmul fast float
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// CHECK-FAST: load float, ptr
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// CHECK-FAST: fadd fast float
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// CHECK-PRECISE: load float, ptr
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// CHECK-PRECISE: load float, ptr
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// CHECK-PRECISE: load float, ptr
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// CHECK-PRECISE: call float @llvm.fmuladd.f32(float {{.*}}, float {{.*}}, float {{.*}})
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// CHECK-STRICT: load float, ptr
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// CHECK-STRICT: load float, ptr
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// CHECK-STRICT: call float @llvm.experimental.constrained.fmul.f32(float {{.*}}, float {{.*}}, {{.*}})
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// CHECK-STRICT: load float, ptr
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// CHECK-STRICT: call float @llvm.experimental.constrained.fadd.f32(float {{.*}}, float {{.*}}, {{.*}})
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// CHECK-STRICT-FAST: load float, ptr
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// CHECK-STRICT-FAST: load float, ptr
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// CHECK-STRICT-FAST: fmul fast float {{.*}}, {{.*}}
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// CHECK-STRICT-FAST: load float, ptr
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// CHECK-STRICT-FAST: fadd fast float {{.*}}, {{.*}}
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// CHECK-FAST1: load float, ptr
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// CHECK-FAST1: load float, ptr
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// CHECK-FAST1: fmul fast float {{.*}}, {{.*}}
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// CHECK-FAST1: load float, ptr {{.*}}
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// CHECK-FAST1: fadd fast float {{.*}}, {{.*}}
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}
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