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ppc64 doesn't have lwau, don't attempt to form it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31656 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -876,9 +876,6 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDOperand &Base,
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SDOperand Ptr;
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if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
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Ptr = LD->getBasePtr();
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// FIXME: PPC has no LWAU!
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} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
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ST = ST;
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//Ptr = ST->getBasePtr();
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@ -891,6 +888,15 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDOperand &Base,
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// TODO: Handle reg+reg.
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if (!SelectAddressRegImm(Ptr, Offset, Base, DAG))
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return false;
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// PPC64 doesn't have lwau, but it does have lwaux. Reject preinc load of
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// sext i32 to i64 when addr mode is r+i.
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if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
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if (LD->getValueType(0) == MVT::i64 && LD->getLoadedVT() == MVT::i32 &&
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LD->getExtensionType() == ISD::SEXTLOAD &&
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isa<ConstantSDNode>(Offset))
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return false;
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}
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AM = ISD::PRE_INC;
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return true;
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