maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

GlobalISel: Remove unnecessary .getReg(0)s

This commit is contained in:
Matt Arsenault 2021-06-07 14:11:52 -04:00
parent 38540d71c7
commit f6555b917b
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
View File

@ -2800,14 +2800,14 @@ LegalizerHelper::lowerLoad(MachineInstr &MI) {
LLT::scalar(PtrTy.getSizeInBits()), LargeSplitSize / 8);
Register PtrAddReg = MRI.createGenericVirtualRegister(PtrTy);
auto SmallPtr =
MIRBuilder.buildPtrAdd(PtrAddReg, PtrReg, OffsetCst.getReg(0));
auto SmallLoad = MIRBuilder.buildLoad(SmallLdReg, SmallPtr.getReg(0),
MIRBuilder.buildPtrAdd(PtrAddReg, PtrReg, OffsetCst);
auto SmallLoad = MIRBuilder.buildLoad(SmallLdReg, SmallPtr,
*SmallMMO);
auto ShiftAmt = MIRBuilder.buildConstant(AnyExtTy, LargeSplitSize);
auto Shift = MIRBuilder.buildShl(AnyExtTy, SmallLoad, ShiftAmt);
auto Or = MIRBuilder.buildOr(AnyExtTy, Shift, LargeLoad);
MIRBuilder.buildTrunc(DstReg, {Or.getReg(0)});
MIRBuilder.buildTrunc(DstReg, {Or});
MI.eraseFromParent();
return Legalized;
}
@ -2855,15 +2855,15 @@ LegalizerHelper::lowerStore(MachineInstr &MI) {
LLT::scalar(PtrTy.getSizeInBits()), LargeSplitSize / 8);
Register PtrAddReg = MRI.createGenericVirtualRegister(PtrTy);
auto SmallPtr =
MIRBuilder.buildPtrAdd(PtrAddReg, PtrReg, OffsetCst.getReg(0));
MIRBuilder.buildPtrAdd(PtrAddReg, PtrReg, OffsetCst);
MachineFunction &MF = MIRBuilder.getMF();
MachineMemOperand *LargeMMO =
MF.getMachineMemOperand(&MMO, 0, LargeSplitSize / 8);
MachineMemOperand *SmallMMO =
MF.getMachineMemOperand(&MMO, LargeSplitSize / 8, SmallSplitSize / 8);
MIRBuilder.buildStore(ExtVal.getReg(0), PtrReg, *LargeMMO);
MIRBuilder.buildStore(SmallVal.getReg(0), SmallPtr.getReg(0), *SmallMMO);
MIRBuilder.buildStore(ExtVal, PtrReg, *LargeMMO);
MIRBuilder.buildStore(SmallVal, SmallPtr, *SmallMMO);
MI.eraseFromParent();
return Legalized;
}