Address perf regression

Author: cor3ntin

clang/include/clang/Sema/Sema.h

@@ -13140,8 +13140,10 @@ class Sema final : public SemaBase {
       if (PushedCodeSynthesisContext)
         S.popCodeSynthesisContext();
 
-      if (auto *FD = dyn_cast<FunctionDecl>(S.CurContext))
+      if (auto *FD = dyn_cast<FunctionDecl>(S.CurContext)) {
         FD->setWillHaveBody(false);
+        S.CheckImmediateEscalatingFunctionDefinition(FD, S.getCurFunction());
+      }
 
       S.PopExpressionEvaluationContext();
       S.PopFunctionScopeInfo();

clang/lib/Sema/SemaDecl.cpp

@@ -16396,6 +16396,9 @@ Decl *Sema::ActOnFinishFunctionBody(Decl *dcl, Stmt *Body,
     // the declaration context below. Otherwise, we're unable to transform
     // 'this' expressions when transforming immediate context functions.
 
+  if(FD)
+    CheckImmediateEscalatingFunctionDefinition(FD, getCurFunction());
+
   if (!IsInstantiation)
     PopDeclContext();
 

clang/lib/Sema/SemaExpr.cpp

@@ -17881,9 +17881,6 @@ void Sema::PopExpressionEvaluationContext() {
   WarnOnPendingNoDerefs(Rec);
   HandleImmediateInvocations(*this, Rec);
 
-  if (auto *FD = dyn_cast<FunctionDecl>(CurContext); FD && getCurFunction())
-    CheckImmediateEscalatingFunctionDefinition(FD, getCurFunction());
-
   // Warn on any volatile-qualified simple-assignments that are not discarded-
   // value expressions nor unevaluated operands (those cases get removed from
   // this list by CheckUnusedVolatileAssignment).