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Only track physical registers in LivePhysRegs

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283561 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Krzysztof Parzyszek 2016-10-07 14:50:49 +00:00
parent a7de0c7962
commit 5cbeeedeaa
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/LivePhysRegs.cpp
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@ -49,7 +49,7 @@ void LivePhysRegs::stepBackward(const MachineInstr &MI) {
if (!O->isDef())
continue;
unsigned Reg = O->getReg();
if (Reg == 0)
if (!TargetRegisterInfo::isPhysicalRegister(Reg))
continue;
removeReg(Reg);
} else if (O->isRegMask())
@ -61,7 +61,7 @@ void LivePhysRegs::stepBackward(const MachineInstr &MI) {
if (!O->isReg() || !O->readsReg())
continue;
unsigned Reg = O->getReg();
if (Reg == 0)
if (!TargetRegisterInfo::isPhysicalRegister(Reg))
continue;
addReg(Reg);
}
@ -77,7 +77,7 @@ void LivePhysRegs::stepForward(const MachineInstr &MI,
for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
if (O->isReg()) {
unsigned Reg = O->getReg();
if (Reg == 0)
if (!TargetRegisterInfo::isPhysicalRegister(Reg))
continue;
if (O->isDef()) {
// Note, dead defs are still recorded. The caller should decide how to