Small cleanup. Use the ARC functions for retain / release / autorelease messages everywhere. This will make properties faster if we're using an ARC-compatible NSObject.

associate.m

@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include "objc/runtime.h"
+#include "objc/objc-arc.h"
 #include "nsobject.h"
 #include "spinlock.h"
 #include "class.h"
@@ -101,7 +102,7 @@ static void cleanupReferenceList(struct reference_list *list)
 				// Full barrier - ensure that we've zero'd the key before doing
 				// this!
 				__sync_synchronize();
-				[(id)r->object release];
+				objc_release(r->object);
 			}
 			r->object = 0;
 			r->policy = 0;
@@ -131,7 +132,7 @@ static void setReference(struct reference_list *list,
 			break;
 		case OBJC_ASSOCIATION_RETAIN_NONATOMIC:
 		case OBJC_ASSOCIATION_RETAIN:
-			obj = [(id)obj retain];
+			obj = objc_retain(obj);
 		case OBJC_ASSOCIATION_ASSIGN:
 			break;
 	}
@@ -169,7 +170,7 @@ static void setReference(struct reference_list *list,
 	r->object = obj;
 	if (OBJC_ASSOCIATION_ASSIGN != r->policy)
 	{
-		[old release];
+		objc_release(old);
 	}
 	if (needLock)
 	{

blocks_runtime.m

@@ -25,6 +25,7 @@
  */
 #import "objc/blocks_runtime.h"
 #import "objc/runtime.h"
+#import "objc/objc-arc.h"
 #include "gc_ops.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -34,12 +35,6 @@
 
 #define fprintf(...)
 
-/* Makes the compiler happy even without Foundation */
-@interface Dummy
-- (id)retain;
-- (void)release;
-@end
-
 static void *_HeapBlockByRef = (void*)1;
 
 /**
@@ -370,7 +365,7 @@ void _Block_object_assign(void *destAddr, const void *object, const int flags)
 			*dst = src;
 			if (!isGCEnabled)
 			{
-				*dst = [src retain];
+				*dst = objc_retain(src);
 			}
 		}
 	}
@@ -449,7 +444,7 @@ void _Block_object_dispose(const void *object, const int flags)
 			if (!isGCEnabled)
 			{
 				fprintf(stderr, "Sending release message to %p\n", src);
-				[src release];
+				objc_release(src);
 			}
 		}
 	}

properties.m

@@ -1,4 +1,5 @@
 #include "objc/runtime.h"
+#include "objc/objc-arc.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -30,15 +31,16 @@ id objc_getProperty(id obj, SEL _cmd, ptrdiff_t offset, BOOL isAtomic)
 		volatile int *lock = lock_for_pointer(addr);
 		lock_spinlock(lock);
 		ret = *(id*)addr;
-		ret = [ret retain];
+		ret = objc_retain(ret);
 		unlock_spinlock(lock);
+		ret = objc_autoreleaseReturnValue(ret);
 	}
 	else
 	{
 		ret = *(id*)addr;
-		ret = [ret retain];
+		ret = objc_retainAutoreleaseReturnValue(ret);
 	}
-	return [ret autorelease];
+	return ret;
 }
 
 void objc_setProperty(id obj, SEL _cmd, ptrdiff_t offset, id arg, BOOL isAtomic, BOOL isCopy)
@@ -62,7 +64,7 @@ void objc_setProperty(id obj, SEL _cmd, ptrdiff_t offset, id arg, BOOL isAtomic,
 	}
 	else
 	{
-		arg = [arg retain];
+		arg = objc_retain(arg);
 	}
 	id old;
 	if (isAtomic)
@@ -78,7 +80,7 @@ void objc_setProperty(id obj, SEL _cmd, ptrdiff_t offset, id arg, BOOL isAtomic,
 		old = *(id*)addr;
 		*(id*)addr = arg;
 	}
-	[old release];
+	objc_release(old);
 }
 
 /**