[llvm-dev] Check for isConstantPhysReg() in bool LiveRangeCalc::findReachingDefs

[Great Indian Bison via llvm-dev]

Hello LLVMDevs,
Should following code in bool LiveRangeCalc::findReachingDefs() check for isConstantPhysReg()?
Or there is a code which should prevent error below to hit for constant physical register?

2 if (Register::isPhysicalRegister(PhysReg) && !MBB->isLiveIn(PhysReg)) {
1 MBB->getParent()->verify();
225 const TargetRegisterInfo *TRI = MRI->getTargetRegisterInfo();
1 errs() << "The register " << printReg(PhysReg, TRI)
2 << " needs to be live in to " << printMBBReference(*MBB)
3 << ", but is missing from the live-in list.\n";
4 report_fatal_error("Invalid global physical register");
5 }

Thanks!
GI Bison.

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