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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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67
lib/Target/ARM/ARMISelLowering.cpp
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@@ -1339,7 +1339,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
SDValue AddArg = DAG.getNode(ISD::ADD, dl, PtrVT, Arg, Const);
SDValue Load = DAG.getLoad(PtrVT, dl, Chain, AddArg,
MachinePointerInfo(),
false, false, 0);
false, false, false, 0);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(j, Load));
}
@@ -1432,7 +1432,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
Callee = DAG.getLoad(getPointerTy(), dl,
DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
} else if (ExternalSymbolSDNode *S=dyn_cast<ExternalSymbolSDNode>(Callee)) {
const char *Sym = S->getSymbol();
@@ -1447,7 +1447,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
Callee = DAG.getLoad(getPointerTy(), dl,
DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
}
} else if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
const GlobalValue *GV = G->getGlobal();
@@ -1468,7 +1468,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
Callee = DAG.getLoad(getPointerTy(), dl,
DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
Callee = DAG.getNode(ARMISD::PIC_ADD, dl,
getPointerTy(), Callee, PICLabel);
@@ -1497,7 +1497,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
Callee = DAG.getLoad(getPointerTy(), dl,
DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
Callee = DAG.getNode(ARMISD::PIC_ADD, dl,
getPointerTy(), Callee, PICLabel);
@@ -1968,7 +1968,7 @@ SDValue ARMTargetLowering::LowerBlockAddress(SDValue Op,
CPAddr = DAG.getNode(ARMISD::Wrapper, DL, PtrVT, CPAddr);
SDValue Result = DAG.getLoad(PtrVT, DL, DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
if (RelocM == Reloc::Static)
return Result;
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
@@ -1992,7 +1992,7 @@ ARMTargetLowering::LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
Argument = DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, Argument);
Argument = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), Argument,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue Chain = Argument.getValue(1);
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
@@ -2040,7 +2040,7 @@ ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
Offset = DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, Offset);
Offset = DAG.getLoad(PtrVT, dl, Chain, Offset,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
Chain = Offset.getValue(1);
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
@@ -2048,7 +2048,7 @@ ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
Offset = DAG.getLoad(PtrVT, dl, Chain, Offset,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
} else {
// local exec model
ARMConstantPoolValue *CPV =
@@ -2057,7 +2057,7 @@ ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
Offset = DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, Offset);
Offset = DAG.getLoad(PtrVT, dl, Chain, Offset,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
}
// The address of the thread local variable is the add of the thread
@@ -2095,13 +2095,14 @@ SDValue ARMTargetLowering::LowerGlobalAddressELF(SDValue Op,
SDValue Result = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(),
CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue Chain = Result.getValue(1);
SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(PtrVT);
Result = DAG.getNode(ISD::ADD, dl, PtrVT, Result, GOT);
if (!UseGOTOFF)
Result = DAG.getLoad(PtrVT, dl, Chain, Result,
MachinePointerInfo::getGOT(), false, false, 0);
MachinePointerInfo::getGOT(),
false, false, false, 0);
return Result;
}
@@ -2118,7 +2119,7 @@ SDValue ARMTargetLowering::LowerGlobalAddressELF(SDValue Op,
CPAddr = DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, CPAddr);
return DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
}
}
@@ -2146,7 +2147,8 @@ SDValue ARMTargetLowering::LowerGlobalAddressDarwin(SDValue Op,
DAG.getTargetGlobalAddress(GV, dl, PtrVT));
if (Subtarget->GVIsIndirectSymbol(GV, RelocM))
Result = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), Result,
MachinePointerInfo::getGOT(), false, false, 0);
MachinePointerInfo::getGOT(),
false, false, false, 0);
return Result;
}
@@ -2166,7 +2168,7 @@ SDValue ARMTargetLowering::LowerGlobalAddressDarwin(SDValue Op,
SDValue Result = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue Chain = Result.getValue(1);
if (RelocM == Reloc::PIC_) {
@@ -2176,7 +2178,7 @@ SDValue ARMTargetLowering::LowerGlobalAddressDarwin(SDValue Op,
if (Subtarget->GVIsIndirectSymbol(GV, RelocM))
Result = DAG.getLoad(PtrVT, dl, Chain, Result, MachinePointerInfo::getGOT(),
false, false, 0);
false, false, false, 0);
return Result;
}
@@ -2198,7 +2200,7 @@ SDValue ARMTargetLowering::LowerGLOBAL_OFFSET_TABLE(SDValue Op,
CPAddr = DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, CPAddr);
SDValue Result = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
return DAG.getNode(ARMISD::PIC_ADD, dl, PtrVT, Result, PICLabel);
}
@@ -2256,7 +2258,7 @@ ARMTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG,
SDValue Result =
DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), CPAddr,
MachinePointerInfo::getConstantPool(),
false, false, 0);
false, false, false, 0);
if (RelocM == Reloc::PIC_) {
SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32);
@@ -2388,7 +2390,7 @@ ARMTargetLowering::GetF64FormalArgument(CCValAssign &VA, CCValAssign &NextVA,
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
ArgValue2 = DAG.getLoad(MVT::i32, dl, Root, FIN,
MachinePointerInfo::getFixedStack(FI),
false, false, 0);
false, false, false, 0);
} else {
Reg = MF.addLiveIn(NextVA.getLocReg(), RC);
ArgValue2 = DAG.getCopyFromReg(Root, dl, Reg, MVT::i32);
@@ -2524,7 +2526,7 @@ ARMTargetLowering::LowerFormalArguments(SDValue Chain,
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
ArgValue2 = DAG.getLoad(MVT::f64, dl, Chain, FIN,
MachinePointerInfo::getFixedStack(FI),
false, false, 0);
false, false, false, 0);
} else {
ArgValue2 = GetF64FormalArgument(VA, ArgLocs[++i],
Chain, DAG, dl);
@@ -2615,7 +2617,7 @@ ARMTargetLowering::LowerFormalArguments(SDValue Chain,
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
InVals.push_back(DAG.getLoad(VA.getValVT(), dl, Chain, FIN,
MachinePointerInfo::getFixedStack(FI),
false, false, 0));
false, false, false, 0));
}
lastInsIndex = index;
}
@@ -2850,7 +2852,7 @@ static SDValue bitcastf32Toi32(SDValue Op, SelectionDAG &DAG) {
return DAG.getLoad(MVT::i32, Op.getDebugLoc(),
Ld->getChain(), Ld->getBasePtr(), Ld->getPointerInfo(),
Ld->isVolatile(), Ld->isNonTemporal(),
Ld->getAlignment());
Ld->isInvariant(), Ld->getAlignment());
llvm_unreachable("Unknown VFP cmp argument!");
}
@@ -2869,7 +2871,7 @@ static void expandf64Toi32(SDValue Op, SelectionDAG &DAG,
Ld->getChain(), Ptr,
Ld->getPointerInfo(),
Ld->isVolatile(), Ld->isNonTemporal(),
Ld->getAlignment());
Ld->isInvariant(), Ld->getAlignment());
EVT PtrType = Ptr.getValueType();
unsigned NewAlign = MinAlign(Ld->getAlignment(), 4);
@@ -2879,7 +2881,7 @@ static void expandf64Toi32(SDValue Op, SelectionDAG &DAG,
Ld->getChain(), NewPtr,
Ld->getPointerInfo().getWithOffset(4),
Ld->isVolatile(), Ld->isNonTemporal(),
NewAlign);
Ld->isInvariant(), NewAlign);
return;
}
@@ -3003,13 +3005,14 @@ SDValue ARMTargetLowering::LowerBR_JT(SDValue Op, SelectionDAG &DAG) const {
if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
Addr = DAG.getLoad((EVT)MVT::i32, dl, Chain, Addr,
MachinePointerInfo::getJumpTable(),
false, false, 0);
false, false, false, 0);
Chain = Addr.getValue(1);
Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, Table);
return DAG.getNode(ARMISD::BR_JT, dl, MVT::Other, Chain, Addr, JTI, UId);
} else {
Addr = DAG.getLoad(PTy, dl, Chain, Addr,
MachinePointerInfo::getJumpTable(), false, false, 0);
MachinePointerInfo::getJumpTable(),
false, false, false, 0);
Chain = Addr.getValue(1);
return DAG.getNode(ARMISD::BR_JT, dl, MVT::Other, Chain, Addr, JTI, UId);
}
@@ -3179,7 +3182,7 @@ SDValue ARMTargetLowering::LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const{
SDValue Offset = DAG.getConstant(4, MVT::i32);
return DAG.getLoad(VT, dl, DAG.getEntryNode(),
DAG.getNode(ISD::ADD, dl, VT, FrameAddr, Offset),
MachinePointerInfo(), false, false, 0);
MachinePointerInfo(), false, false, false, 0);
}
// Return LR, which contains the return address. Mark it an implicit live-in.
@@ -3200,7 +3203,7 @@ SDValue ARMTargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
while (Depth--)
FrameAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), FrameAddr,
MachinePointerInfo(),
false, false, 0);
false, false, false, 0);
return FrameAddr;
}
@@ -4595,7 +4598,8 @@ static SDValue SkipExtension(SDNode *N, SelectionDAG &DAG) {
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N))
return DAG.getLoad(LD->getMemoryVT(), N->getDebugLoc(), LD->getChain(),
LD->getBasePtr(), LD->getPointerInfo(), LD->isVolatile(),
LD->isNonTemporal(), LD->getAlignment());
LD->isNonTemporal(), LD->isInvariant(),
LD->getAlignment());
// Otherwise, the value must be a BUILD_VECTOR. For v2i64, it will
// have been legalized as a BITCAST from v4i32.
if (N->getOpcode() == ISD::BITCAST) {
@@ -7067,13 +7071,14 @@ static SDValue PerformVMOVRRDCombine(SDNode *N,
SDValue BasePtr = LD->getBasePtr();
SDValue NewLD1 = DAG.getLoad(MVT::i32, DL, LD->getChain(), BasePtr,
LD->getPointerInfo(), LD->isVolatile(),
LD->isNonTemporal(), LD->getAlignment());
LD->isNonTemporal(), LD->isInvariant(),
LD->getAlignment());
SDValue OffsetPtr = DAG.getNode(ISD::ADD, DL, MVT::i32, BasePtr,
DAG.getConstant(4, MVT::i32));
SDValue NewLD2 = DAG.getLoad(MVT::i32, DL, NewLD1.getValue(1), OffsetPtr,
LD->getPointerInfo(), LD->isVolatile(),
LD->isNonTemporal(),
LD->isNonTemporal(), LD->isInvariant(),
std::min(4U, LD->getAlignment() / 2));
DAG.ReplaceAllUsesOfValueWith(SDValue(LD, 1), NewLD2.getValue(1));