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R600/SI: Add hack to copy from a VGPR to VCC
This hopefully should be fixed when VReg_1 is removed. llvm-svn: 229225
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@ -332,6 +332,16 @@ SIInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
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return;
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} else if (AMDGPU::SReg_64RegClass.contains(DestReg)) {
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if (DestReg == AMDGPU::VCC) {
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// FIXME: Hack until VReg_1 removed.
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assert(AMDGPU::VGPR_32RegClass.contains(SrcReg));
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BuildMI(MBB, MI, DL, get(AMDGPU::V_CMP_NE_I32_e32), AMDGPU::VCC)
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.addImm(0)
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.addReg(SrcReg, getKillRegState(KillSrc));
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return;
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}
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assert(AMDGPU::SReg_64RegClass.contains(SrcReg));
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BuildMI(MBB, MI, DL, get(AMDGPU::S_MOV_B64), DestReg)
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.addReg(SrcReg, getKillRegState(KillSrc));
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