[llvm] [ReachingDefAnalysis] Extend the analysis to stack objects. (PR #118097)

[Michael Maitland via llvm-commits]

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@@ -529,14 +612,21 @@ ReachingDefAnalysis::getLocalLiveOutMIDef(MachineBasicBlock *MBB,
                                           MCRegister PhysReg) const {
   LiveRegUnits LiveRegs(*TRI);
   LiveRegs.addLiveOuts(*MBB);
-  if (LiveRegs.available(PhysReg))
+  if (Register::isPhysicalRegister(PhysReg) && LiveRegs.available(PhysReg))
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michaelmaitland wrote:

If `PhysReg` isn't `isPhysicalRegister`, then is there something wrong with the naming here? Or is this statement always true and can be dropped?

https://github.com/llvm/llvm-project/pull/118097