3e287b4d35
There are 20 LLVM math intrinsics that correspond to mathlib calls according to the LangRef: http://llvm.org/docs/LangRef.html#standard-c-library-intrinsics We were only converting 3 mathlib calls (sqrt, fma, pow) and 12 builtin calls (ceil, copysign, fabs, floor, fma, fmax, fmin, nearbyint, pow, rint, round, trunc) to their intrinsic-equivalents. This patch pulls the transforms together and handles all 20 cases. The switch is guarded by a check for const-ness to make sure we're not doing the transform if errno could possibly be set by the libcall or builtin. Differential Revision: https://reviews.llvm.org/D40044 llvm-svn: 319593
16 lines
625 B
C
16 lines
625 B
C
// RUN: %clang_cc1 -fmath-errno -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=HAS_ERRNO
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// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=NO_ERRNO
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float foo(float X) {
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// HAS_ERRNO: call float @sqrtf(float
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// NO_ERRNO: call float @llvm.sqrt.f32(float
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return __builtin_sqrtf(X);
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}
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// HAS_ERRNO: declare float @sqrtf(float) [[ATTR:#[0-9]+]]
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// HAS_ERRNO-NOT: attributes [[ATTR]] = {{{.*}} readnone
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// NO_ERRNO: declare float @llvm.sqrt.f32(float) [[ATTR:#[0-9]+]]
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// NO_ERRNO: attributes [[ATTR]] = { nounwind readnone {{.*}}}
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