2aeefcf40f
These global flags block furthur improvements for clang, users should always use fast-math flags see also https://discourse.llvm.org/t/rfc-honor-pragmas-with-ffp-contract-fast/80797 Remove them incrementally, this is the clang part.
28 lines
1.2 KiB
C
28 lines
1.2 KiB
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffast-math \
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// RUN: -ffp-contract=fast -emit-llvm -o - %s | \
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// RUN: FileCheck %s --check-prefixes=CHECK,FINITEONLY
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -funsafe-math-optimizations \
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// RUN: -ffp-contract=fast -emit-llvm -o - %s | \
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// RUN: FileCheck %s --check-prefixes=CHECK,NOFINITEONLY
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -funsafe-math-optimizations \
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// RUN: -ffp-contract=on -emit-llvm -o - %s | \
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// RUN: FileCheck %s --check-prefixes=CHECK,NOFINITEONLY
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -funsafe-math-optimizations \
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// RUN: -ffp-contract=off -emit-llvm -o - %s | \
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// RUN: FileCheck %s --check-prefixes=CHECK,NOFINITEONLY
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float foo(float a, float b) {
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return a+b;
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}
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// FINITEONLY: define{{.*}} float @foo(float noundef nofpclass(nan inf) %{{.*}}, float noundef nofpclass(nan inf) %{{.*}}){{.*}} [[ATTRS:#[0-9]+]]
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// NOFINITEONLY: define{{.*}} float @foo(float noundef %{{.*}}, float noundef %{{.*}}){{.*}} [[ATTRS:#[0-9]+]]
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// CHECK: attributes [[ATTRS]] = {
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// CHECK-SAME: "no-signed-zeros-fp-math"="true"
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// CHECK-SAME: "no-trapping-math"="true"
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// CHECK-SAME: }
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