re PR ipa/64668 (internal compiler error: in compare_ssa_name, at ipa-icf-gimple.c:120)

Fix PR64668.

	* objc/compile/pr64668.m: New test.
	PR ipa/64668
	* ipa-icf-gimple.c (func_checker::compare_operand): Call proper
	function for second argument of OBJ_TYPE_REF.

From-SVN: r219861

gcc/ChangeLog

+2015-01-19  Martin Liska  <mliska@suse.cz>
+
+	PR ipa/64668
+	* ipa-icf-gimple.c (func_checker::compare_operand): Call proper
+	function for second argument of OBJ_TYPE_REF.
+
 2015-01-19  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR ipa/64218

gcc/ipa-icf-gimple.c

@@ -456,7 +456,7 @@ func_checker::compare_operand (tree t1, tree t2)
 	z2 = TREE_OPERAND (t2, 2);
 
 	ret = compare_ssa_name (x1, x2)
-	      && compare_ssa_name (y1, y2)
+	      && compare_operand (y1, y2)
 	      && compare_cst_or_decl (z1, z2);
 
 	return return_with_debug (ret);

gcc/testsuite/ChangeLog

+2015-01-19  Martin Liska  <mliska@suse.cz>
+
+	* objc/compile/pr64668.m: New test.
+
 2015-01-19  David Malcolm  <dmalcolm@redhat.com>
 
 	* jit.dg/test-arith-overflow.c: Include stdbool.h.

gcc/testsuite/objc/compile/pr64668.m

+typedef struct objc_object {} *id;
+typedef struct _NSZone NSZone;
+@class NSCoder;
+@protocol NSObject - (Class) class;
+@end @protocol NSCopying - (id) copyWithZone: (NSZone*)zone;
+@end @protocol NSMutableCopying - (id) mutableCopyWithZone: (NSZone*)zone;
+@end @protocol NSCoding - (void) encodeWithCoder: (NSCoder*)aCoder;
+@end  @interface NSObject <NSObject> {}
+@end typedef double NSTimeInterval;
+@interface NSString :NSObject <NSCoding, NSCopying, NSMutableCopying> + (id) string;
+@end @interface NSConstantString : NSString {}
+@end @class NSMutableArray, NSMutableDictionary, NSMutableData, NSData, NSString;
+@interface NSBundle : NSObject {}
+enum { NSMixedState = -1, NSOffState = 0, NSOnState = 1 };
+@end @class NSWindow;
+@interface IBInspector : NSObject { id object; }
+@end @interface GormScrollViewAttributesInspector : IBInspector { id verticalScroll; id horizontalScroll; }
+@end @implementation GormScrollViewAttributesInspector - - init {}
+- (void) verticalSelected: (id)sender { [super ok: sender]; [object setHasVerticalScroller: ([verticalScroll state] == NSOnState)]; }
+- (void) horizontalSelected: (id)sender { [super ok: sender]; [object setHasHorizontalScroller: ([horizontalScroll state] == NSOnState)]; }