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ppc64 doesn't have lwau, don't attempt to form it.

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llvm-svn: 31656
This commit is contained in:
Chris Lattner 2006-11-11 00:08:42 +00:00
parent ecf811ba9d
commit 9c5d395b0e
1 changed files with 9 additions and 3 deletions
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12
lib/Target/PowerPC/PPCISelLowering.cpp
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@ -876,9 +876,6 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDOperand &Base,
SDOperand Ptr;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
Ptr = LD->getBasePtr();
// FIXME: PPC has no LWAU!
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
ST = ST;
//Ptr = ST->getBasePtr();
@ -891,6 +888,15 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDOperand &Base,
// TODO: Handle reg+reg.
if (!SelectAddressRegImm(Ptr, Offset, Base, DAG))
return false;
// PPC64 doesn't have lwau, but it does have lwaux. Reject preinc load of
// sext i32 to i64 when addr mode is r+i.
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
if (LD->getValueType(0) == MVT::i64 && LD->getLoadedVT() == MVT::i32 &&
LD->getExtensionType() == ISD::SEXTLOAD &&
isa<ConstantSDNode>(Offset))
return false;
}
AM = ISD::PRE_INC;
return true;