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// RUN: %clang_cc1 -fmath-errno -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=HAS_ERRNO
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=NO_ERRNO
// FIXME: If a builtin is supposed to have identical semantics to its libm twin, then it
// should not be marked "constant" in Builtins.def because that means it can't set errno.
// Note that both runs have 'readnone' on the libcall here.
float foo(float X) {
// HAS_ERRNO: call float @sqrtf(float
// NO_ERRNO: call float @sqrtf(float
return __builtin_sqrtf(X);
}
// HAS_ERRNO: declare float @sqrtf(float) [[ATTR:#[0-9]+]]
// HAS_ERRNO: attributes [[ATTR]] = { nounwind readnone {{.*}}}
// NO_ERRNO: declare float @sqrtf(float) [[ATTR:#[0-9]+]]
// NO_ERRNO: attributes [[ATTR]] = { nounwind readnone {{.*}}}
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