[clang] Adding use-after-return in Lifetime Analysis (PR #165370)

[Utkarsh Saxena via cfe-commits]

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@@ -44,6 +44,8 @@ class Fact {
     Use,
     /// A marker for a specific point in the code, for testing.
     TestPoint,
+    OriginEscapes,
+    // An origin that stores a loan escapes the function.
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usx95 wrote:

Wording suggestion: /// Indicates that an origin escapes the function scope (e.g., via return).

https://github.com/llvm/llvm-project/pull/165370