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Correctly Expand or Promote FP_TO_UINT based on the capabilities of the

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machine.  This allows us to generate great code for i32 FP_TO_UINT now on
targets with 64 bit extensions.

llvm-svn: 23993
This commit is contained in:
Nate Begeman 2005-10-25 23:48:36 +00:00
parent 98c5495992
commit c3ab5792e9
1 changed files with 5 additions and 3 deletions
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8
lib/Target/PowerPC/PPCISelLowering.cpp
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@ -81,9 +81,6 @@ PPCTargetLowering::PPCTargetLowering(TargetMachine &TM)
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::BRCONDTWOWAY, MVT::Other, Expand);
// PowerPC does not have FP_TO_UINT
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
// PowerPC turns FP_TO_SINT into FCTIWZ and some load/stores.
setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
@ -98,6 +95,11 @@ PPCTargetLowering::PPCTargetLowering(TargetMachine &TM)
// They also have instructions for converting between i64 and fp.
setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
// To take advantage of the above i64 FP_TO_SINT, promote i32 FP_TO_UINT
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Promote);
} else {
// PowerPC does not have FP_TO_UINT on 32 bit implementations.
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
}
if (TM.getSubtarget<PPCSubtarget>().has64BitRegs()) {