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AMDGPU: Remove dead code 

There's no point in checking VReg_1 because all uses
of it should already have been removed by SILowerI1Copies.

llvm-svn: 249081
This commit is contained in:
Matt Arsenault 2015-10-01 21:51:57 +00:00
parent dc7f5f2b77
commit db7f0ef367
1 changed files with 4 additions and 7 deletions
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11
llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
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@ -193,15 +193,12 @@ bool SIFixSGPRCopies::isVGPRToSGPRCopy(const MachineInstr &Copy,
return false; return false;
} }
const TargetRegisterClass *DstRC = MRI.getRegClass(DstReg); if (!TargetRegisterInfo::isVirtualRegister(SrcReg))
const TargetRegisterClass *SrcRC;
if (!TargetRegisterInfo::isVirtualRegister(SrcReg) ||
MRI.getRegClass(SrcReg) == &AMDGPU::VReg_1RegClass)
return false; return false;
SrcRC = TRI->getSubRegClass(MRI.getRegClass(SrcReg), SrcSubReg); const TargetRegisterClass *DstRC = MRI.getRegClass(DstReg);
const TargetRegisterClass *SrcRC
= TRI->getSubRegClass(MRI.getRegClass(SrcReg), SrcSubReg);
return TRI->isSGPRClass(DstRC) && TRI->hasVGPRs(SrcRC); return TRI->isSGPRClass(DstRC) && TRI->hasVGPRs(SrcRC);
} }