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R600/SI: Use IMPLICIT_DEF and KILL when failing to spill VGPRs 

This helps us avoid 'invalid register class for operand' verifier
errors.

llvm-svn: 225989
This commit is contained in:
Tom Stellard 2015-01-14 15:42:34 +00:00
parent 42fb60e1a7
commit 0febe685ed
1 changed files with 2 additions and 3 deletions
llvm/lib/Target/R600
SIInstrInfo.cpp

5
llvm/lib/Target/R600/SIInstrInfo.cpp
View File

@ -488,7 +488,7 @@ void SIInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
LLVMContext &Ctx = MF->getFunction()->getContext();
Ctx.emitError("SIInstrInfo::storeRegToStackSlot - Do not know how to"
" spill register");
BuildMI(MBB, MI, DL, get(AMDGPU::V_MOV_B32_e32), AMDGPU::VGPR0)
BuildMI(MBB, MI, DL, get(AMDGPU::KILL))
.addReg(SrcReg);
}
}
@ -535,8 +535,7 @@ void SIInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
LLVMContext &Ctx = MF->getFunction()->getContext();
Ctx.emitError("SIInstrInfo::loadRegFromStackSlot - Do not know how to"
" restore register");
BuildMI(MBB, MI, DL, get(AMDGPU::V_MOV_B32_e32), DestReg)
.addReg(AMDGPU::VGPR0);
BuildMI(MBB, MI, DL, get(AMDGPU::IMPLICIT_DEF), DestReg);
}
}