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R600/SI: Add hack to copy from a VGPR to VCC

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This hopefully should be fixed when VReg_1 is removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229225 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2015-02-14 02:55:54 +00:00
parent 4eba62d6c2
commit 582d603f17
1 changed files with 10 additions and 0 deletions
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10
lib/Target/R600/SIInstrInfo.cpp
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@ -332,6 +332,16 @@ SIInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
return;
} else if (AMDGPU::SReg_64RegClass.contains(DestReg)) {
if (DestReg == AMDGPU::VCC) {
// FIXME: Hack until VReg_1 removed.
assert(AMDGPU::VGPR_32RegClass.contains(SrcReg));
BuildMI(MBB, MI, DL, get(AMDGPU::V_CMP_NE_I32_e32), AMDGPU::VCC)
.addImm(0)
.addReg(SrcReg, getKillRegState(KillSrc));
return;
}
assert(AMDGPU::SReg_64RegClass.contains(SrcReg));
BuildMI(MBB, MI, DL, get(AMDGPU::S_MOV_B64), DestReg)
.addReg(SrcReg, getKillRegState(KillSrc));