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1// RUN: %clang_cc1 -fblocks -g -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s
2//
3// Test that debug location is generated for a captured "self" inside
4// a block.
5//
6// This test is split into two parts, this one for the frontend, and
7// then llvm/test/DebugInfo/debug-info-block-captured-self.ll to
8// ensure that DW_AT_location is generated for the captured self.
9@class T;
10@interface S
11@end
12@interface Mode
13-(int) count;
14@end
15@interface Context
16@end
17@interface ViewController
18@property (nonatomic, readwrite, strong) Context *context;
19@end
20typedef enum {
21    Unknown = 0,
22} State;
23@interface Main : ViewController
24{
25    T * t1;
26    T * t2;
27}
28@property(readwrite, nonatomic) State state;
29@end
30@implementation Main
31- (id) initWithContext:(Context *) context
32{
33    t1 = [self.context withBlock:^(id obj){
34        id *mode1;
35	t2 = [mode1 withBlock:^(id object){
36	    Mode *mode2 = object;
37	    if ([mode2 count] != 0) {
38	      self.state = 0;
39	    }
40	  }];
41      }];
42}
43@end
44// The important part of this test is that there is a dbg.value
45// intrinsic associated with the implicit .block_descriptor argument
46// of the block. We also test that this value gets alloca'd, so the
47// register llocator won't accidentally kill it.
48
49// outer block:
50// CHECK: define internal void {{.*}}_block_invoke{{.*}}
51
52// inner block:
53// CHECK: define internal void {{.*}}_block_invoke{{.*}}
54// CHECK:        [[MEM1:%.*]] = alloca i8*, align 8
55// CHECK-NEXT:   [[MEM2:%.*]] = alloca i8*, align 8
56// CHECK-NEXT:   [[MEM3:%.*]] = alloca %{{.*}}*, align 8
57// CHECK:        store i8* [[BLOCK_DESC:%.*]], i8** [[MEM1]], align 8
58// CHECK:        [[TMP0:%.*]] = load i8** [[MEM1]]
59// CHECK:        call void @llvm.dbg.value(metadata !{i8* [[TMP0]]}, i64 0, metadata [[BDMD:![0-9]+]])
60// CHECK:        call void @llvm.dbg.declare(metadata !{i8* [[BLOCK_DESC]]}, metadata [[BDMD:![0-9]+]])
61// CHECK:        [[TMP1:%.*]] = bitcast
62// CHECK-NEXT:   [[TMP2:%.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* [[TMP1]]
63// CHECK-NEXT:   [[TMP3:%.*]] = load %0** [[TMP2]]
64// CHECK-NEXT:   store {{.*}}* [[TMP3]], %{{.*}}** [[MEM3]], align 8
65// CHECK:        [[BDMD]] = metadata {{.*}}.block_descriptor
66