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Differential D47334

AMDGPU: Add nuw to add off of kernarg ptr
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Authored by arsenm on May 24 2018, 10:18 AM.

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rampitec

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Event Timeline

arsenm created this revision.May 24 2018, 10:18 AM
Herald added subscribers: t-tye, tpr, dstuttard and 4 others. · View Herald TranscriptMay 24 2018, 10:18 AM
rampitec accepted this revision.May 24 2018, 10:24 AM

LGTM

This revision is now accepted and ready to land.May 24 2018, 10:24 AM
arsenm closed this revision.May 29 2018, 10:47 AM

r333441

Revision Contents

PathSize
lib/
Target/
AMDGPU/
3 lines

Diff 148439

lib/Target/AMDGPU/SIISelLowering.cpp

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Show First 20 Lines • Show All 1,070 Lines • ▼ Show 20 LinesSDValue SITargetLowering::lowerKernArgParameterPtr(SelectionDAG &DAG,
std::tie(InputPtrReg, RC) std::tie(InputPtrReg, RC)
= Info->getPreloadedValue(AMDGPUFunctionArgInfo::KERNARG_SEGMENT_PTR); = Info->getPreloadedValue(AMDGPUFunctionArgInfo::KERNARG_SEGMENT_PTR);
MachineRegisterInfo &MRI = DAG.getMachineFunction().getRegInfo(); MachineRegisterInfo &MRI = DAG.getMachineFunction().getRegInfo();
MVT PtrVT = getPointerTy(DL, AMDGPUASI.CONSTANT_ADDRESS); MVT PtrVT = getPointerTy(DL, AMDGPUASI.CONSTANT_ADDRESS);
SDValue BasePtr = DAG.getCopyFromReg(Chain, SL, SDValue BasePtr = DAG.getCopyFromReg(Chain, SL,
MRI.getLiveInVirtReg(InputPtrReg->getRegister()), PtrVT); MRI.getLiveInVirtReg(InputPtrReg->getRegister()), PtrVT);
return DAG.getNode(ISD::ADD, SL, PtrVT, BasePtr, return DAG.getObjectPtrOffset(SL, BasePtr, Offset);
DAG.getConstant(Offset, SL, PtrVT));
} }
SDValue SITargetLowering::getImplicitArgPtr(SelectionDAG &DAG, SDValue SITargetLowering::getImplicitArgPtr(SelectionDAG &DAG,
const SDLoc &SL) const { const SDLoc &SL) const {
auto MFI = DAG.getMachineFunction().getInfo<SIMachineFunctionInfo>(); auto MFI = DAG.getMachineFunction().getInfo<SIMachineFunctionInfo>();
uint64_t Offset = getImplicitParameterOffset(MFI, FIRST_IMPLICIT); uint64_t Offset = getImplicitParameterOffset(MFI, FIRST_IMPLICIT);
return lowerKernArgParameterPtr(DAG, SL, DAG.getEntryNode(), Offset); return lowerKernArgParameterPtr(DAG, SL, DAG.getEntryNode(), Offset);
} }
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