test/CodeGenObjC/property.m

// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s

// TODO: actually test most of this instead of just emitting it

int printf(const char *, ...);

@interface Root
-(id) alloc;
-(id) init;
@end

@interface A : Root {
  int x;
  int y, ro, z;
  id ob0, ob1, ob2, ob3, ob4;
}
@property int x;
@property int y;
@property int z;
@property(readonly) int ro;
@property(assign) id ob0;
@property(retain) id ob1;
@property(copy) id ob2;
@property(retain, nonatomic) id ob3;
@property(copy, nonatomic) id ob4;
@end

@implementation A
@dynamic x;
@synthesize y;
@synthesize z = z;
@synthesize ro;
@synthesize ob0;
@synthesize ob1;
@synthesize ob2;
@synthesize ob3;
@synthesize ob4;
-(int) y {
  return x + 1;
}
-(void) setZ: (int) arg {
  x = arg - 1;
}
@end

@interface A (Cat)
@property int dyn;
@end

@implementation A (Cat)
-(int) dyn {
  return 10;
}
@end

// Test that compound operations only compute the base once.
// CHECK: define void @test2
A *test2_helper(void);
void test2() {
  // CHECK:      [[BASE:%.*]] = call [[A:%.*]]* @test2_helper()
  // CHECK-NEXT: [[SEL:%.*]] = load i8**
  // CHECK-NEXT: [[BASETMP:%.*]] = bitcast [[A]]* [[BASE]] to i8*
  // CHECK-NEXT: [[LD:%.*]] = call i32 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 (i8*, i8*)*)(i8* [[BASETMP]], i8* [[SEL]])
  // CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LD]], 1
  // CHECK-NEXT: [[SEL:%.*]] = load i8**
  // CHECK-NEXT: [[BASETMP:%.*]] = bitcast [[A]]* [[BASE]] to i8*
  // CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i32)*)(i8* [[BASETMP]], i8* [[SEL]], i32 [[ADD]])
  test2_helper().dyn++;

  // CHECK:      [[BASE:%.*]] = call [[A]]* @test2_helper()
  // CHECK-NEXT: [[SEL:%.*]] = load i8**
  // CHECK-NEXT: [[BASETMP:%.*]] = bitcast [[A]]* [[BASE]] to i8*
  // CHECK-NEXT: [[LD:%.*]] = call i32 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 (i8*, i8*)*)(i8* [[BASETMP]], i8* [[SEL]])
  // CHECK-NEXT: [[ADD:%.*]] = mul nsw i32 [[LD]], 10
  // CHECK-NEXT: [[SEL:%.*]] = load i8**
  // CHECK-NEXT: [[BASETMP:%.*]] = bitcast [[A]]* [[BASE]] to i8*
  // CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i32)*)(i8* [[BASETMP]], i8* [[SEL]], i32 [[ADD]])
  test2_helper().dyn *= 10;
}

// Test aggregate initialization from property reads.
// Not crashing is good enough for the property-specific test.
struct test3_struct { int x,y,z; };
struct test3_nested { struct test3_struct t; };
@interface test3_object
@property struct test3_struct s;
@end
void test3(test3_object *p) {
  struct test3_struct array[1] = { p.s };
  struct test3_nested agg = { p.s };
}