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Pull in r163967 from upstream llvm trunk:

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X86: Emitting x87 fsin/fcos for sinf/cosf is not safe without unsafe
  fp math.

This should make clang emit calls to libm for sinf/cosf by default.

MFC after:	1 week
This commit is contained in:
dim 2012-09-15 17:02:05 +00:00
parent 4e376ee7fa
commit 0d3f939ba7
1 changed files with 2 additions and 0 deletions
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2
contrib/llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -643,7 +643,9 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
if (!TM.Options.UnsafeFPMath) {
setOperationAction(ISD::FSIN , MVT::f32 , Expand);
setOperationAction(ISD::FSIN , MVT::f64 , Expand);
setOperationAction(ISD::FCOS , MVT::f32 , Expand);
setOperationAction(ISD::FCOS , MVT::f64 , Expand);
}
addLegalFPImmediate(APFloat(+0.0)); // FLD0