llvm-project/clang/test/CodeGenObjC/debug-info-block-captured-self.m

// RUN: %clang_cc1 -fblocks -g -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s
//
// Test that debug location is generated for a captured "self" inside
// a block.
//
// This test is split into two parts, this one for the frontend, and
// then llvm/test/DebugInfo/debug-info-block-captured-self.ll to
// ensure that DW_AT_location is generated for the captured self.
@class T;
@interface S
@end
@interface Mode
-(int) count;
@end
@interface Context
@end
@interface ViewController
@property (nonatomic, readwrite, strong) Context *context;
@end
typedef enum {
    Unknown = 0,
} State;
@interface Main : ViewController
{
    T * t1;
    T * t2;
}
@property(readwrite, nonatomic) State state;
@end
@implementation Main
- (id) initWithContext:(Context *) context
{
    t1 = [self.context withBlock:^(id obj){
        id *mode1;
	t2 = [mode1 withBlock:^(id object){
	    Mode *mode2 = object;
	    if ([mode2 count] != 0) {
	      self.state = 0;
	    }
	  }];
      }];
}
@end
// The important part of this test is that there is a dbg.value
// intrinsic associated with the implicit .block_descriptor argument
// of the block. We also test that this value gets alloca'd, so the
// register llocator won't accidentally kill it.

// outer block:
// CHECK: define internal void {{.*}}_block_invoke{{.*}}

// inner block:
// CHECK: define internal void {{.*}}_block_invoke{{.*}}
// CHECK:        [[MEM1:%.*]] = alloca i8*, align 8
// CHECK-NEXT:   [[MEM2:%.*]] = alloca i8*, align 8
// CHECK-NEXT:   [[MEM3:%.*]] = alloca %{{.*}}*, align 8
// CHECK:        store i8* [[BLOCK_DESC:%.*]], i8** [[MEM1]], align 8
// CHECK:        [[TMP0:%.*]] = load i8** [[MEM1]]
// CHECK:        call void @llvm.dbg.value(metadata !{i8* [[TMP0]]}, i64 0, metadata [[BDMD:![0-9]+]])
// CHECK:        call void @llvm.dbg.declare(metadata !{i8* [[BLOCK_DESC]]}, metadata [[BDMD:![0-9]+]])
// CHECK:        [[TMP1:%.*]] = bitcast
// CHECK-NEXT:   [[TMP2:%.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* [[TMP1]]
// CHECK-NEXT:   [[TMP3:%.*]] = load %0** [[TMP2]]
// CHECK-NEXT:   store {{.*}}* [[TMP3]], %{{.*}}** [[MEM3]], align 8
// CHECK:        [[BDMD]] = metadata {{.*}}.block_descriptor