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[X86] Remove override of shouldUseStrictFP_TO_INT for fp80. NFC

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I suspect this became unnecessary after r354161. Prior to that
we may have been going through the default expansion of FP_TO_UINT
on 64-bit targets and then ending up back in Custom X86 handling
to handle the FP_TO_SINT for it. Now we just Custom handle the
FP_TO_UINT directly. We already need to handle it for 32-bit mode
during type legalization so we wouldn't save any code by using
the default expansion on 64-bit.
This commit is contained in:
Craig Topper 2019-12-04 17:44:32 -08:00
parent 8d0558ea7e
commit f32abf466c
2 changed files with 0 additions and 9 deletions
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6
lib/Target/X86/X86ISelLowering.cpp
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@ -5007,12 +5007,6 @@ bool X86TargetLowering::decomposeMulByConstant(LLVMContext &Context, EVT VT,
(1 - MulC).isPowerOf2() || (-(MulC + 1)).isPowerOf2();
}
bool X86TargetLowering::shouldUseStrictFP_TO_INT(EVT FpVT, EVT IntVT,
bool IsSigned) const {
// f80 UINT_TO_FP is more efficient using Strict code if FCMOV is available.
return !IsSigned && FpVT == MVT::f80 && Subtarget.hasCMov();
}
bool X86TargetLowering::isExtractSubvectorCheap(EVT ResVT, EVT SrcVT,
unsigned Index) const {
if (!isOperationLegalOrCustom(ISD::EXTRACT_SUBVECTOR, ResVT))

3
lib/Target/X86/X86ISelLowering.h
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@ -1126,9 +1126,6 @@ namespace llvm {
bool decomposeMulByConstant(LLVMContext &Context, EVT VT,
SDValue C) const override;
bool shouldUseStrictFP_TO_INT(EVT FpVT, EVT IntVT,
bool IsSigned) const override;
/// Return true if EXTRACT_SUBVECTOR is cheap for this result type
/// with this index.
bool isExtractSubvectorCheap(EVT ResVT, EVT SrcVT,