Commit 0febe685 authored by Tom Stellard's avatar Tom Stellard
Browse files

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
parent 42fb60e1

llvm/lib/Target/R600/SIInstrInfo.cpp

+2 −3
Original line number Diff line number Diff line
@@ -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);

  }

}