[clang] [LifetimeSafety] Add parameter lifetime tracking in CFG (PR #169320)

[Yitzhak Mandelbaum via cfe-commits]

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@@ -2246,6 +2252,9 @@ LocalScope* CFGBuilder::addLocalScopeForVarDecl(VarDecl *VD,
   if (!VD->hasLocalStorage())
     return Scope;
 
+  if (isa<ParmVarDecl>(VD) && VD->getType()->isReferenceType())
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ymand wrote:

Maybe comment on why we exclude this case?

https://github.com/llvm/llvm-project/pull/169320