Remove an unneeded function parameter by inlining its body.

There is only one call site of this helper function, so we are not gaining any
flexibility by doing this. It only makes it harder to reason about what the
function actually does without providing any benefit.

I am doing this before I make in the next commit an actual semantic changing
commit to ease review.

(cherry picked from commit ca6cde6)

Author: gottesmm

lib/Sema/TypeCheckConcurrency.cpp

@@ -1624,12 +1624,37 @@ bool ReferencedActor::isKnownToBeLocal() const {
   }
 }
 
-static AbstractFunctionDecl const *
-isActorInitOrDeInitContext(const DeclContext *dc) {
-  return swift::isActorInitOrDeInitContext(
-      dc, [](const AbstractClosureExpr *closure) {
-        return isSendableClosure(closure, /*forActorIsolation=*/false);
-      });
+const AbstractFunctionDecl *
+swift::isActorInitOrDeInitContext(const DeclContext *dc) {
+  while (true) {
+    // Non-Sendable closures are considered part of the enclosing context.
+    if (auto *closure = dyn_cast<AbstractClosureExpr>(dc)) {
+      if (isSendableClosure(closure, /*for actor isolation*/ false))
+        return nullptr;
+
+      dc = dc->getParent();
+      continue;
+    }
+
+    if (auto func = dyn_cast<AbstractFunctionDecl>(dc)) {
+      // If this is an initializer or deinitializer of an actor, we're done.
+      if ((isa<ConstructorDecl>(func) || isa<DestructorDecl>(func)) &&
+          getSelfActorDecl(dc->getParent()))
+        return func;
+
+      // Non-Sendable local functions are considered part of the enclosing
+      // context.
+      if (func->getDeclContext()->isLocalContext()) {
+        if (func->isSendable())
+          return nullptr;
+
+        dc = dc->getParent();
+        continue;
+      }
+    }
+
+    return nullptr;
+  }
 }
 
 static bool isStoredProperty(ValueDecl const *member) {
@@ -6452,40 +6477,6 @@ bool swift::completionContextUsesConcurrencyFeatures(const DeclContext *dc) {
     });
 }
 
-AbstractFunctionDecl const *swift::isActorInitOrDeInitContext(
-    const DeclContext *dc,
-    llvm::function_ref<bool(const AbstractClosureExpr *)> isSendable) {
-  while (true) {
-    // Non-Sendable closures are considered part of the enclosing context.
-    if (auto *closure = dyn_cast<AbstractClosureExpr>(dc)) {
-      if (isSendable(closure))
-        return nullptr;
-
-      dc = dc->getParent();
-      continue;
-    }
-
-    if (auto func = dyn_cast<AbstractFunctionDecl>(dc)) {
-      // If this is an initializer or deinitializer of an actor, we're done.
-      if ((isa<ConstructorDecl>(func) || isa<DestructorDecl>(func)) &&
-          getSelfActorDecl(dc->getParent()))
-        return func;
-
-      // Non-Sendable local functions are considered part of the enclosing
-      // context.
-      if (func->getDeclContext()->isLocalContext()) {
-        if (func->isSendable())
-          return nullptr;
-
-        dc = dc->getParent();
-        continue;
-      }
-    }
-
-    return nullptr;
-  }
-}
-
 /// Find the directly-referenced parameter or capture of a parameter for
 /// for the given expression.
 VarDecl *swift::getReferencedParamOrCapture(

lib/Sema/TypeCheckConcurrency.h

@@ -591,9 +591,7 @@ ProtocolConformance *deriveImplicitSendableConformance(Evaluator &evaluator,
 /// Check whether we are in an actor's initializer or deinitializer.
 /// \returns nullptr iff we are not in such a declaration. Otherwise,
 ///          returns a pointer to the declaration.
-AbstractFunctionDecl const *isActorInitOrDeInitContext(
-    const DeclContext *dc,
-    llvm::function_ref<bool(const AbstractClosureExpr *)> isSendable);
+const AbstractFunctionDecl *isActorInitOrDeInitContext(const DeclContext *dc);
 
 /// Determine whether this declaration is always accessed asynchronously.
 bool isAsyncDecl(ConcreteDeclRef declRef);