[clang] [Lifetime Safety] Highlight lifetimebound calls in alias chain diagnostics (PR #206337)

[via cfe-commits]

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@@ -664,20 +664,66 @@ class LifetimeSafetySemaHelperImpl : public LifetimeSafetySemaHelper {
     return CurrExpr->getSourceRange() != LastExpr->getSourceRange();
   }
 
+  bool shouldCarryHiddenLifetimeBound(const Expr *HiddenExpr,
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NeKon69 wrote:

Oh, now, seeing `IgnoreImpCasts` on the expressions makes me realize, can't we just compare them directly to see if they match? Something like `return A->IgnoreUnlessSpelledInSource() == B->IgnoreUnlessSpelledInSource();`

https://github.com/llvm/llvm-project/pull/206337