[clang] [clang] Implement lifetime analysis for lifetime_capture_by(X) (PR #115921)

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``````````bash
git-clang-format --diff f9125ddc1faafaceac9064e889cd9b4a77523677 4f6e2bf7ae5356e226442755bb88833b01a9d683 --extensions cpp,h -- clang/test/AST/attr-lifetime-capture-by.cpp clang/test/SemaCXX/attr-lifetime-capture-by.cpp clang/include/clang/Sema/Sema.h clang/lib/AST/TypePrinter.cpp clang/lib/Sema/CheckExprLifetime.cpp clang/lib/Sema/CheckExprLifetime.h clang/lib/Sema/SemaChecking.cpp clang/lib/Sema/SemaDecl.cpp clang/lib/Sema/SemaDeclAttr.cpp clang/lib/Sema/SemaType.cpp clang/test/Sema/warn-lifetime-analysis-nocfg.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/CheckExprLifetime.cpp b/clang/lib/Sema/CheckExprLifetime.cpp
index 57c70fc357..89d088c98e 100644
--- a/clang/lib/Sema/CheckExprLifetime.cpp
+++ b/clang/lib/Sema/CheckExprLifetime.cpp
@@ -1120,13 +1120,11 @@ static bool shouldRunGSLAssignmentAnalysis(const Sema &SemaRef,
            isAssignmentOperatorLifetimeBound(Entity.AssignmentOperator)));
 }
 
-static void checkExprLifetimeImpl(Sema &SemaRef,
-                                  const InitializedEntity *InitEntity,
-                                  const InitializedEntity *ExtendingEntity,
-                                  LifetimeKind LK,
-                                  const AssignedEntity *AEntity, 
-                                  const CapturingEntity* CapEntity,
-                                  Expr *Init) {
+static void
+checkExprLifetimeImpl(Sema &SemaRef, const InitializedEntity *InitEntity,
+                      const InitializedEntity *ExtendingEntity, LifetimeKind LK,
+                      const AssignedEntity *AEntity,
+                      const CapturingEntity *CapEntity, Expr *Init) {
   assert((AEntity && LK == LK_Assignment) ||
          (CapEntity && LK == LK_LifetimeCapture) ||
          (InitEntity && LK != LK_Assignment));

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https://github.com/llvm/llvm-project/pull/115921