Move ContainsPointerToDataMember to CodeGenTypes. No functionality change.

llvm-svn: 103792

clang/lib/CodeGen/CGExprConstant.cpp

@@ -984,32 +984,8 @@ llvm::Constant *CodeGenModule::EmitConstantExpr(const Expr *E,
   return C;
 }
 
-static bool containsPointerToDataMember(CodeGenTypes &Types, QualType T) {
-  // No need to check for member pointers when not compiling C++.
-  if (!Types.getContext().getLangOptions().CPlusPlus)
-    return false;
-  
-  T = Types.getContext().getBaseElementType(T);
-  
-  if (const RecordType *RT = T->getAs<RecordType>()) {
-    const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
-    
-    // FIXME: It would be better if there was a way to explicitly compute the
-    // record layout instead of converting to a type.
-    Types.ConvertTagDeclType(RD);
-    
-    const CGRecordLayout &Layout = Types.getCGRecordLayout(RD);
-    return Layout.containsPointerToDataMember();
-  }
-    
-  if (const MemberPointerType *MPT = T->getAs<MemberPointerType>())
-    return !MPT->getPointeeType()->isFunctionType();
-  
-  return false;
-}
-
 llvm::Constant *CodeGenModule::EmitNullConstant(QualType T) {
-  if (!containsPointerToDataMember(getTypes(), T))
+  if (!getTypes().ContainsPointerToDataMember(T))
     return llvm::Constant::getNullValue(getTypes().ConvertTypeForMem(T));
     
   if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(T)) {

clang/lib/CodeGen/CodeGenTypes.cpp

@@ -467,3 +467,27 @@ CodeGenTypes::getCGRecordLayout(const RecordDecl *TD) const {
   assert(Layout && "Unable to find record layout information for type");
   return *Layout;
 }
+
+bool CodeGenTypes::ContainsPointerToDataMember(QualType T) {
+  // No need to check for member pointers when not compiling C++.
+  if (!Context.getLangOptions().CPlusPlus)
+    return false;
+  
+  T = Context.getBaseElementType(T);
+  
+  if (const RecordType *RT = T->getAs<RecordType>()) {
+    const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
+    
+    // FIXME: It would be better if there was a way to explicitly compute the
+    // record layout instead of converting to a type.
+    ConvertTagDeclType(RD);
+    
+    const CGRecordLayout &Layout = getCGRecordLayout(RD);
+    return Layout.containsPointerToDataMember();
+  }
+  
+  if (const MemberPointerType *MPT = T->getAs<MemberPointerType>())
+    return !MPT->getPointeeType()->isFunctionType();
+  
+  return false;
+}

clang/lib/CodeGen/CodeGenTypes.h

@@ -186,6 +186,10 @@ public:  // These are internal details of CGT that shouldn't be used externally.
   /// argument types it would be passed as on the provided vector \arg
   /// ArgTys. See ABIArgInfo::Expand.
   void GetExpandedTypes(QualType Ty, std::vector<const llvm::Type*> &ArgTys);
+  
+  /// ContainsPointerToDataMember - Return whether the given type contains a
+  /// pointer to a data member.
+  bool ContainsPointerToDataMember(QualType T);
 };
 
 }  // end namespace CodeGen