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[X86] Fix inconsistencies in different places where we split loads/stores.
-Use MinAlign instead of std::min. -Use SelectionDAG::getMemBasePlusOffset. -Apply offset to the pointer info for the second load/store created. llvm-svn: 321536
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@ -18728,13 +18728,12 @@ static SDValue LowerExtended1BitVectorLoad(SDValue Op,
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Ld->getBasePtr(),
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Ld->getMemOperand());
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SDValue BasePtrHi =
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DAG.getNode(ISD::ADD, dl, BasePtr.getValueType(), BasePtr,
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DAG.getConstant(2, dl, BasePtr.getValueType()));
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SDValue BasePtrHi = DAG.getMemBasePlusOffset(BasePtr, 2, dl);
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SDValue LoadHi = DAG.getLoad(MVT::v16i1, dl, Ld->getChain(),
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BasePtrHi,
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Ld->getMemOperand());
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SDValue LoadHi = DAG.getLoad(MVT::v16i1, dl, Ld->getChain(), BasePtrHi,
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Ld->getPointerInfo().getWithOffset(2),
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MinAlign(Ld->getAlignment(), 2U),
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Ld->getMemOperand()->getFlags());
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SDValue NewChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
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LoadLo.getValue(1), LoadHi.getValue(1));
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@ -34051,8 +34050,9 @@ static SDValue combineLoad(SDNode *N, SelectionDAG &DAG,
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Ptr = DAG.getMemBasePlusOffset(Ptr, 16, dl);
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SDValue Load2 =
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DAG.getLoad(HalfVT, dl, Ld->getChain(), Ptr, Ld->getPointerInfo(),
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std::min(16U, Alignment), Ld->getMemOperand()->getFlags());
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DAG.getLoad(HalfVT, dl, Ld->getChain(), Ptr,
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Ld->getPointerInfo().getWithOffset(16),
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MinAlign(Alignment, 16U), Ld->getMemOperand()->getFlags());
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SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
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Load1.getValue(1),
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Load2.getValue(1));
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@ -34465,8 +34465,9 @@ static SDValue combineStore(SDNode *N, SelectionDAG &DAG,
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DAG.getStore(St->getChain(), dl, Value0, Ptr0, St->getPointerInfo(),
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Alignment, St->getMemOperand()->getFlags());
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SDValue Ch1 =
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DAG.getStore(St->getChain(), dl, Value1, Ptr1, St->getPointerInfo(),
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std::min(16U, Alignment), St->getMemOperand()->getFlags());
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DAG.getStore(St->getChain(), dl, Value1, Ptr1,
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St->getPointerInfo().getWithOffset(16),
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MinAlign(Alignment, 16U), St->getMemOperand()->getFlags());
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return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ch0, Ch1);
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}
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