Fix <rdar://problem/6614945> method not found.

This was a fairly recent regression.

llvm-svn: 65547

clang/lib/Sema/SemaExprObjC.cpp

@@ -395,10 +395,10 @@ Sema::ExprResult Sema::ActOnInstanceMessage(ExprTy *receiver, Selector Sel,
       }
       if (Method && DiagnoseUseOfDecl(Method, receiverLoc))
         return true;
-    } else {
-      // We're not in a method context, look for any factory method named 'Sel'.
-      Method = FactoryMethodPool[Sel].Method;
     }
+    // Look for any factory method named 'Sel'.
+    if (!Method)
+      Method = FactoryMethodPool[Sel].Method;
     if (!Method)
       Method = LookupInstanceMethodInGlobalPool(
                                Sel, SourceRange(lbrac,rbrac));

clang/test/SemaObjC/method-lookup-2.m

@@ -2,7 +2,10 @@
 typedef signed char BOOL;
 
 @protocol NSObject
++ alloc;
+- init;
 - (BOOL) isEqual:(id) object;
+- (Class)class;
 @end
 
 @interface NSObject < NSObject > {} @end
@@ -38,3 +41,22 @@ extern NSString *const NSWillBecomeMultiThreadedNotification;
   return[[self sharedInstance] run];
 }
 @end
+
+@interface XX : NSObject
+
++ classMethod;
+
+@end
+
+@interface YY : NSObject
+- whatever;
+@end
+
+@implementation YY 
+
+- whatever {
+  id obj = [[XX alloc] init];
+  [[obj class] classMethod];
+}
+
+@end