test/CodeGenObjC/objc2-write-barrier.m

// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-gc -emit-llvm -o %t %s
// RUN: grep -F '@objc_assign_global' %t  | count 21
// RUN: grep -F '@objc_assign_ivar' %t  | count 11


typedef const struct __CFDictionary * CFDictionaryRef;

// callouts to these are generated with cc -fobjc-gc

int GlobalAssigns;
int IvarAssigns;
int StrongCastAssigns;


// The test case elements;
@class NSObject;
@class NSString;

typedef struct {
  id  element;
  id elementArray[10];
  __strong CFDictionaryRef cfElement;
  __strong CFDictionaryRef cfElementArray[10];
} struct_with_ids_t;

@interface Foo  {
@public
// assignments to any/all of these fields should generate objc_assign_ivar
  __strong CFDictionaryRef dict;
  __strong CFDictionaryRef dictArray[3];
  id ivar;
  id array[10];
  NSObject *nsobject;
  NSString *stringArray[10];
  struct_with_ids_t inner;
}

@end

// assignments to these should generate objc_assign_global
id GlobalId;
id GlobalArray[20];
NSObject *GlobalObject;
NSObject *GlobalObjectArray[20];
__strong CFDictionaryRef Gdict;
__strong CFDictionaryRef Gdictarray[10];
struct_with_ids_t GlobalStruct;
struct_with_ids_t GlobalStructArray[10];


// The test cases
void *rhs = 0;

#define ASSIGNTEST(expr, global) expr = rhs

int testGlobals() {
  // Everything in this function generates assign_global intercepts
  int counter = 0;

  static id staticGlobalId;
  static id staticGlobalArray[20];
  static NSObject *staticGlobalObject;
  static NSObject *staticGlobalObjectArray[20];
  static __strong CFDictionaryRef staticGdict;
  static __strong CFDictionaryRef staticGdictarray[10];
  static struct_with_ids_t staticGlobalStruct;
  static struct_with_ids_t staticGlobalStructArray[10];

  ASSIGNTEST(GlobalId, GlobalAssigns);				// objc_assign_global
  ASSIGNTEST(GlobalArray[0], GlobalAssigns);			// objc_assign_global
  ASSIGNTEST(GlobalObject, GlobalAssigns);			// objc_assign_global
  ASSIGNTEST(GlobalObjectArray[0], GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(Gdict, GlobalAssigns);				// objc_assign_global
  ASSIGNTEST(Gdictarray[1], GlobalAssigns);			// objc_assign_global

  ASSIGNTEST(GlobalStruct.element, GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(GlobalStruct.elementArray[0], GlobalAssigns);	// objc_assign_global
  ASSIGNTEST(GlobalStruct.cfElement, GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(GlobalStruct.cfElementArray[0], GlobalAssigns);	// objc_assign_global

  ASSIGNTEST(staticGlobalId, GlobalAssigns);			// objc_assign_global
  ASSIGNTEST(staticGlobalArray[0], GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(staticGlobalObject, GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(staticGlobalObjectArray[0], GlobalAssigns);	// objc_assign_global
  ASSIGNTEST(staticGdict, GlobalAssigns);			// objc_assign_global
  ASSIGNTEST(staticGdictarray[1], GlobalAssigns);		// objc_assign_global

  ASSIGNTEST(staticGlobalStruct.element, GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(staticGlobalStruct.elementArray[0], GlobalAssigns);	// objc_assign_global
  ASSIGNTEST(staticGlobalStruct.cfElement, GlobalAssigns);		// objc_assign_global
  ASSIGNTEST(staticGlobalStruct.cfElementArray[0], GlobalAssigns);	// objc_assign_global

  return counter;
}


int testIvars() {
  Foo *foo;
  int counter = 0;

  ASSIGNTEST(foo->ivar, IvarAssigns);					// objc_assign_ivar
  ASSIGNTEST(foo->dict, IvarAssigns);					// objc_assign_ivar
  ASSIGNTEST(foo->dictArray[0], IvarAssigns);				// objc_assign_ivar
  ASSIGNTEST(foo->array[0], IvarAssigns);				// objc_assign_ivar
  ASSIGNTEST(foo->nsobject, IvarAssigns);				// objc_assign_ivar
  ASSIGNTEST(foo->stringArray[0], IvarAssigns);				// objc_assign_ivar
  ASSIGNTEST(foo->inner.element, IvarAssigns);				// objc_assign_ivar
  ASSIGNTEST(foo->inner.elementArray[0], IvarAssigns);			// objc_assign_ivar
  ASSIGNTEST(foo->inner.cfElement, IvarAssigns);			// objc_assign_ivar
  ASSIGNTEST(foo->inner.cfElementArray[0], IvarAssigns);		// objc_assign_ivar

  return counter;
}