[NFC] [Serialization] Remove redundant hasPendingBody member

The hasPendingBody member is redundant with the
PendingBodies.count(Decl*) method. This patch removes the redundant
hasPendingBody member and the corresponding InterestingDecl struct.

Author: ChuanqiXu9

clang/include/clang/Serialization/ASTReader.h

@@ -1089,27 +1089,13 @@ class ASTReader
   /// the last time we loaded information about this identifier.
   llvm::DenseMap<IdentifierInfo *, unsigned> IdentifierGeneration;
 
-  class InterestingDecl {
-    Decl *D;
-    bool DeclHasPendingBody;
-
-  public:
-    InterestingDecl(Decl *D, bool HasBody)
-        : D(D), DeclHasPendingBody(HasBody) {}
-
-    Decl *getDecl() { return D; }
-
-    /// Whether the declaration has a pending body.
-    bool hasPendingBody() { return DeclHasPendingBody; }
-  };
-
   /// Contains declarations and definitions that could be
   /// "interesting" to the ASTConsumer, when we get that AST consumer.
   ///
   /// "Interesting" declarations are those that have data that may
   /// need to be emitted, such as inline function definitions or
   /// Objective-C protocols.
-  std::deque<InterestingDecl> PotentiallyInterestingDecls;
+  std::deque<Decl *> PotentiallyInterestingDecls;
 
   /// The list of deduced function types that we have not yet read, because
   /// they might contain a deduced return type that refers to a local type

clang/lib/Serialization/ASTReaderDecl.cpp

@@ -94,8 +94,6 @@ namespace clang {
     GlobalDeclID NamedDeclForTagDecl = 0;
     IdentifierInfo *TypedefNameForLinkage = nullptr;
 
-    bool HasPendingBody = false;
-
     ///A flag to carry the information for a decl from the entity is
     /// used. We use it to delay the marking of the canonical decl as used until
     /// the entire declaration is deserialized and merged.
@@ -314,9 +312,6 @@ namespace clang {
     static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
     static void markIncompleteDeclChainImpl(...);
 
-    /// Determine whether this declaration has a pending body.
-    bool hasPendingBody() const { return HasPendingBody; }
-
     void ReadFunctionDefinition(FunctionDecl *FD);
     void Visit(Decl *D);
 
@@ -541,7 +536,6 @@ void ASTDeclReader::ReadFunctionDefinition(FunctionDecl *FD) {
   }
   // Store the offset of the body so we can lazily load it later.
   Reader.PendingBodies[FD] = GetCurrentCursorOffset();
-  HasPendingBody = true;
 }
 
 void ASTDeclReader::Visit(Decl *D) {
@@ -1164,7 +1158,6 @@ void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
     // Load the body on-demand. Most clients won't care, because method
     // definitions rarely show up in headers.
     Reader.PendingBodies[MD] = GetCurrentCursorOffset();
-    HasPendingBody = true;
   }
   MD->setSelfDecl(readDeclAs<ImplicitParamDecl>());
   MD->setCmdDecl(readDeclAs<ImplicitParamDecl>());
@@ -4156,8 +4149,7 @@ Decl *ASTReader::ReadDeclRecord(DeclID ID) {
   // AST consumer might need to know about, queue it.
   // We don't pass it to the consumer immediately because we may be in recursive
   // loading, and some declarations may still be initializing.
-  PotentiallyInterestingDecls.push_back(
-      InterestingDecl(D, Reader.hasPendingBody()));
+  PotentiallyInterestingDecls.push_back(D);
 
   return D;
 }
@@ -4179,10 +4171,10 @@ void ASTReader::PassInterestingDeclsToConsumer() {
   EagerlyDeserializedDecls.clear();
 
   while (!PotentiallyInterestingDecls.empty()) {
-    InterestingDecl D = PotentiallyInterestingDecls.front();
+    Decl *D = PotentiallyInterestingDecls.front();
     PotentiallyInterestingDecls.pop_front();
-    if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
-      PassInterestingDeclToConsumer(D.getDecl());
+    if (isConsumerInterestedIn(getContext(), D, PendingBodies.count(D)))
+      PassInterestingDeclToConsumer(D);
   }
 }
 
@@ -4239,9 +4231,8 @@ void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
       // We might have made this declaration interesting. If so, remember that
       // we need to hand it off to the consumer.
       if (!WasInteresting &&
-          isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
-        PotentiallyInterestingDecls.push_back(
-            InterestingDecl(D, Reader.hasPendingBody()));
+          isConsumerInterestedIn(getContext(), D, PendingBodies.count(D))) {
+        PotentiallyInterestingDecls.push_back(D);
         WasInteresting = true;
       }
     }