diff options
Diffstat (limited to 'lib/CodeGen/RegisterScavenging.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterScavenging.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp index f878eaa55e..ada7b4665d 100644 --- a/lib/CodeGen/RegisterScavenging.cpp +++ b/lib/CodeGen/RegisterScavenging.cpp @@ -241,7 +241,8 @@ unsigned RegScavenger::findSurvivorReg(MachineBasicBlock::iterator MI, // Remove any candidates touched by instruction. for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { const MachineOperand &MO = MI->getOperand(i); - if (!MO.isReg() || MO.isUndef() || !MO.getReg()) + if (!MO.isReg() || MO.isUndef() || !MO.getReg() || + TRI->isVirtualRegister(MO.getReg())) continue; Candidates.reset(MO.getReg()); for (const unsigned *R = TRI->getAliasSet(MO.getReg()); *R; R++) @@ -279,7 +280,7 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC, // Exclude all the registers being used by the instruction. for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) { MachineOperand &MO = I->getOperand(i); - if (MO.isReg()) + if (MO.isReg() && !TRI->isVirtualRegister(MO.getReg())) Candidates.reset(MO.getReg()); } |