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1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -o - %s | FileCheck %s
2
3// A test to ensure that we generate fused calls at -O0.
4
5@class Test0;
6Test0 *test0(void) {
7  extern Test0 *test0_helper;
8  return test0_helper;
9
10  // CHECK:      [[LD:%.*]] = load [[TEST0:%.*]]*, [[TEST0:%.*]]** @test0_helper
11  // CHECK-NEXT: [[T0:%.*]] = bitcast [[TEST0]]* [[LD]] to i8*
12  // CHECK-NEXT: [[T1:%.*]] = tail call i8* @llvm.objc.retainAutoreleaseReturnValue(i8* [[T0]])
13  // CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[TEST0]]*
14  // CHECK-NEXT: ret [[TEST0]]* [[T2]]
15}
16
17id test1(void) {
18  extern id test1_helper;
19  return test1_helper;
20
21  // CHECK:      [[LD:%.*]] = load i8*, i8** @test1_helper
22  // CHECK-NEXT: [[T0:%.*]] = tail call i8* @llvm.objc.retainAutoreleaseReturnValue(i8* [[LD]])
23  // CHECK-NEXT: ret i8* [[T0]]
24}
25
26void test2(void) {
27  // CHECK:      [[X:%.*]] = alloca i8*
28  // CHECK-NEXT: store i8* null, i8** [[X]]
29  // CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[X]])
30  // CHECK-NEXT: ret void
31  __weak id x;
32}
33
34id test3(void) {
35  extern id test3_helper(void);
36  // CHECK:      [[T0:%.*]] = call i8* @test3_helper()
37  // CHECK-NEXT: ret i8* [[T0]]
38  return test3_helper();
39}
40
41@interface Test4 { id x; } @end
42@interface Test4_sub : Test4 { id y; } @end
43Test4 *test4(void) {
44  extern Test4_sub *test4_helper(void);
45  // CHECK:      [[T0:%.*]] = call [[TEST4S:%.*]]* @test4_helper()
46  // CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST4S]]* [[T0]] to [[TEST4:%.*]]*
47  // CHECK-NEXT: ret [[TEST4]]* [[T1]]
48  return test4_helper();
49}
50
51// rdar://problem/9418404
52@class Test5;
53void test5(void) {
54  Test5 *x, *y;
55  if ((x = y))
56    y = 0;
57
58// CHECK-LABEL:    define void @test5()
59// CHECK:      [[X:%.*]] = alloca [[TEST5:%.*]]*,
60// CHECK-NEXT: [[Y:%.*]] = alloca [[TEST5:%.*]]*,
61// CHECK-NEXT: store [[TEST5]]* null, [[TEST5]]** [[X]],
62// CHECK-NEXT: store [[TEST5]]* null, [[TEST5]]** [[Y]],
63// CHECK-NEXT: [[T0:%.*]] = load [[TEST5]]*, [[TEST5]]** [[Y]],
64// CHECK-NEXT: [[T1:%.*]] = bitcast [[TEST5]]** [[X]] to i8**
65// CHECK-NEXT: [[T2:%.*]] = bitcast [[TEST5]]* [[T0]] to i8*
66// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[T1]], i8* [[T2]])
67// CHECK-NEXT: [[T3:%.*]] = icmp ne [[TEST5]]* [[T0]], null
68// CHECK-NEXT: br i1 [[T3]],
69}
70