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[mips] Factor out unaligned store lowering code. 

llvm-svn: 182050
This commit is contained in:
Akira Hatanaka 2013-05-16 20:45:17 +00:00
parent 778c73c56c
commit d82ee940c3
1 changed files with 14 additions and 10 deletions
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24
llvm/lib/Target/Mips/MipsISelLowering.cpp
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@ -1999,16 +1999,8 @@ static SDValue createStoreLR(unsigned Opc, SelectionDAG &DAG, StoreSDNode *SD,
}
// Expand an unaligned 32 or 64-bit integer store node.
SDValue MipsTargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
StoreSDNode *SD = cast<StoreSDNode>(Op);
EVT MemVT = SD->getMemoryVT();
// Return if store is aligned or if MemVT is neither i32 nor i64.
if ((SD->getAlignment() >= MemVT.getSizeInBits() / 8) ||
((MemVT != MVT::i32) && (MemVT != MVT::i64)))
return SDValue();
bool IsLittle = Subtarget->isLittle();
static SDValue lowerUnalignedIntStore(StoreSDNode *SD, SelectionDAG &DAG,
bool IsLittle) {
SDValue Value = SD->getValue(), Chain = SD->getChain();
EVT VT = Value.getValueType();
@ -2035,6 +2027,18 @@ SDValue MipsTargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
return createStoreLR(MipsISD::SDR, DAG, SD, SDL, IsLittle ? 0 : 7);
}
SDValue MipsTargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
StoreSDNode *SD = cast<StoreSDNode>(Op);
EVT MemVT = SD->getMemoryVT();
// Lower unaligned integer stores.
if ((SD->getAlignment() < MemVT.getSizeInBits() / 8) &&
((MemVT == MVT::i32) || (MemVT == MVT::i64)))
return lowerUnalignedIntStore(SD, DAG, Subtarget->isLittle());
return SDValue();
}
SDValue MipsTargetLowering::lowerADD(SDValue Op, SelectionDAG &DAG) const {
if (Op->getOperand(0).getOpcode() != ISD::FRAMEADDR
|| cast<ConstantSDNode>