Several cleanups:
- rename isObjCIdType/isObjCClassType -> isObjCIdStructType/isObjCClassStructType. The previous name didn't do what you would expect.
- add back isObjCIdType/isObjCClassType to do what you would expect. Not currently used, however many of the isObjCIdStructType/isObjCClassStructType clients could be converted over time.
- move static Sema function areComparableObjCInterfaces to ASTContext (renamed to areComparableObjCPointerTypes, since it now operates on pointer types).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64385 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 4ac7214..8c3a0a9 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -2256,9 +2256,9 @@
         } else if (LHSIface && RHSIface &&
                    Context.canAssignObjCInterfaces(RHSIface, LHSIface)) {
           compositeType = rexT;
-        } else if (Context.isObjCIdType(lhptee) || 
-                   Context.isObjCIdType(rhptee)) { 
-          // FIXME: This code looks wrong, because isObjCIdType checks
+        } else if (Context.isObjCIdStructType(lhptee) || 
+                   Context.isObjCIdStructType(rhptee)) { 
+          // FIXME: This code looks wrong, because isObjCIdStructType checks
           // the struct but getObjCIdType returns the pointer to
           // struct. This is horrible and should be fixed.
           compositeType = Context.getObjCIdType();
@@ -2412,9 +2412,9 @@
     return ConvTy;
 
   // ID acts sort of like void* for ObjC interfaces
-  if (LHSIface && Context.isObjCIdType(rhptee))
+  if (LHSIface && Context.isObjCIdStructType(rhptee))
     return ConvTy;
-  if (RHSIface && Context.isObjCIdType(lhptee))
+  if (RHSIface && Context.isObjCIdStructType(lhptee))
     return ConvTy;
 
   // C99 6.5.16.1p1 (constraint 3): both operands are pointers to qualified or 
@@ -2903,21 +2903,6 @@
   return lex->getType();
 }
 
-static bool areComparableObjCInterfaces(QualType LHS, QualType RHS,
-                                        ASTContext& Context) {
-  const ObjCInterfaceType* LHSIface = LHS->getAsObjCInterfaceType();
-  const ObjCInterfaceType* RHSIface = RHS->getAsObjCInterfaceType();
-  // ID acts sort of like void* for ObjC interfaces
-  if (LHSIface && Context.isObjCIdType(RHS))
-    return true;
-  if (RHSIface && Context.isObjCIdType(LHS))
-    return true;
-  if (!LHSIface || !RHSIface)
-    return false;
-  return Context.canAssignObjCInterfaces(LHSIface, RHSIface) ||
-         Context.canAssignObjCInterfaces(RHSIface, LHSIface);
-}
-
 // C99 6.5.8
 QualType Sema::CheckCompareOperands(Expr *&lex, Expr *&rex, SourceLocation Loc,
                                     bool isRelational) {
@@ -2977,7 +2962,7 @@
         !LCanPointeeTy->isVoidType() && !RCanPointeeTy->isVoidType() &&
         !Context.typesAreCompatible(LCanPointeeTy.getUnqualifiedType(),
                                     RCanPointeeTy.getUnqualifiedType()) &&
-        !areComparableObjCInterfaces(LCanPointeeTy, RCanPointeeTy, Context)) {
+        !Context.areComparableObjCPointerTypes(lType, rType)) {
       Diag(Loc, diag::ext_typecheck_comparison_of_distinct_pointers)
         << lType << rType << lex->getSourceRange() << rex->getSourceRange();
     }
diff --git a/lib/Sema/SemaExprObjC.cpp b/lib/Sema/SemaExprObjC.cpp
index 32ff7ff..7629987 100644
--- a/lib/Sema/SemaExprObjC.cpp
+++ b/lib/Sema/SemaExprObjC.cpp
@@ -485,11 +485,11 @@
   // Allow id<P..> and an 'id' or void* type in all cases.
   if (const PointerType *PT = lhs->getAsPointerType()) {
     QualType PointeeTy = PT->getPointeeType();
-    if (Context.isObjCIdType(PointeeTy) || PointeeTy->isVoidType())
+    if (Context.isObjCIdStructType(PointeeTy) || PointeeTy->isVoidType())
       return true;
   } else if (const PointerType *PT = rhs->getAsPointerType()) {
     QualType PointeeTy = PT->getPointeeType();
-    if (Context.isObjCIdType(PointeeTy) || PointeeTy->isVoidType())
+    if (Context.isObjCIdStructType(PointeeTy) || PointeeTy->isVoidType())
       return true;
   }
   
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index c96fec7..049aca5 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -1019,8 +1019,8 @@
 
   // Objective C++: We're able to convert between "id" and a pointer
   // to any interface (in both directions).
-  if ((FromIface && Context.isObjCIdType(ToPointeeType))
-      || (ToIface && Context.isObjCIdType(FromPointeeType))) {
+  if ((FromIface && Context.isObjCIdStructType(ToPointeeType))
+      || (ToIface && Context.isObjCIdStructType(FromPointeeType))) {
     ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, 
                                                        ToPointeeType,
                                                        ToType, Context);
@@ -1029,10 +1029,10 @@
 
   // Objective C++: Allow conversions between the Objective-C "id" and
   // "Class", in either direction.
-  if ((Context.isObjCIdType(FromPointeeType) && 
-       Context.isObjCClassType(ToPointeeType)) ||
-      (Context.isObjCClassType(FromPointeeType) &&
-       Context.isObjCIdType(ToPointeeType))) {
+  if ((Context.isObjCIdStructType(FromPointeeType) && 
+       Context.isObjCClassStructType(ToPointeeType)) ||
+      (Context.isObjCClassStructType(FromPointeeType) &&
+       Context.isObjCIdStructType(ToPointeeType))) {
     ConvertedType = ToType;
     return true;
   }
@@ -1131,10 +1131,10 @@
       // Objective-C++ conversions are always okay.
       // FIXME: We should have a different class of conversions for
       // the Objective-C++ implicit conversions.
-      if (Context.isObjCIdType(FromPointeeType) || 
-          Context.isObjCIdType(ToPointeeType) ||
-          Context.isObjCClassType(FromPointeeType) ||
-          Context.isObjCClassType(ToPointeeType))
+      if (Context.isObjCIdStructType(FromPointeeType) || 
+          Context.isObjCIdStructType(ToPointeeType) ||
+          Context.isObjCClassStructType(FromPointeeType) ||
+          Context.isObjCClassStructType(ToPointeeType))
         return false;
 
       if (FromPointeeType->isRecordType() &&