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Added invariant field to the DAG.getLoad method and changed all calls.

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When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144100 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper
2011-11-08 18:42:53 +00:00
parent 30b4d8b83b
commit d752e0f7e6
26 changed files with 253 additions and 202 deletions
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14
lib/Target/XCore/XCoreISelLowering.cpp
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@@ -427,7 +427,7 @@ LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
//
return DAG.getLoad(getPointerTy(), DL, Chain, BasePtr,
MachinePointerInfo(),
false, false, 0);
false, false, false, 0);
}
// Lower to
// ldw low, base[offset >> 2]
@@ -444,9 +444,11 @@ LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
SDValue HighAddr = DAG.getNode(ISD::ADD, DL, MVT::i32, Base, HighOffset);
SDValue Low = DAG.getLoad(getPointerTy(), DL, Chain,
LowAddr, MachinePointerInfo(), false, false, 0);
LowAddr, MachinePointerInfo(),
false, false, false, 0);
SDValue High = DAG.getLoad(getPointerTy(), DL, Chain,
HighAddr, MachinePointerInfo(), false, false, 0);
HighAddr, MachinePointerInfo(),
false, false, false, 0);
SDValue LowShifted = DAG.getNode(ISD::SRL, DL, MVT::i32, Low, LowShift);
SDValue HighShifted = DAG.getNode(ISD::SHL, DL, MVT::i32, High, HighShift);
SDValue Result = DAG.getNode(ISD::OR, DL, MVT::i32, LowShifted, HighShifted);
@@ -761,7 +763,7 @@ LowerVAARG(SDValue Op, SelectionDAG &DAG) const
EVT VT = Node->getValueType(0);
SDValue VAList = DAG.getLoad(getPointerTy(), dl, Node->getOperand(0),
Node->getOperand(1), MachinePointerInfo(V),
false, false, 0);
false, false, false, 0);
// Increment the pointer, VAList, to the next vararg
SDValue Tmp3 = DAG.getNode(ISD::ADD, dl, getPointerTy(), VAList,
DAG.getConstant(VT.getSizeInBits(),
@@ -771,7 +773,7 @@ LowerVAARG(SDValue Op, SelectionDAG &DAG) const
MachinePointerInfo(V), false, false, 0);
// Load the actual argument out of the pointer VAList
return DAG.getLoad(VT, dl, Tmp3, VAList, MachinePointerInfo(),
false, false, 0);
false, false, false, 0);
}
SDValue XCoreTargetLowering::
@@ -1146,7 +1148,7 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,
SDValue FIN = DAG.getFrameIndex(FI, MVT::i32);
InVals.push_back(DAG.getLoad(VA.getLocVT(), dl, Chain, FIN,
MachinePointerInfo::getFixedStack(FI),
false, false, 0));
false, false, false, 0));
}
}