Test that we emit a DW_AT_location for self captured by a block.

This is the backend part of a CFE test with the same name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177087 91177308-0d34-0410-b5e6-96231b3b80d8

Author: adrian-prantl

test/DebugInfo/debug-info-block-captured-self.ll

@@ -0,0 +1,105 @@
+; RUN: llc -mtriple x86_64-apple-darwin -filetype=obj -o %t.o < %s
+; RUN: llvm-dwarfdump %t.o | FileCheck %s
+;
+; Test that DW_AT_location is generated for a captured "self" inside a
+; block.
+;
+; This test is split into two parts, the frontend part can be found at
+; llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m
+;
+; CHECK:      {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
+; CHECK:      DW_TAG_variable
+; CHECK:      {{.*}}DW_AT_name{{.*}}"self"{{.*}}
+; CHECK-NOT:  DW_TAG
+; CHECK:      DW_AT_location
+;
+; CHECK:      {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
+; CHECK:      DW_TAG_variable
+; CHECK:      {{.*}}DW_AT_name{{.*}}"self"{{.*}}
+; CHECK-NOT:  DW_TAG
+; CHECK:      DW_AT_location
+;
+; Generated (and then reduced) from
+; ----------------------------------------------------------------------
+;
+; @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
+; ----------------------------------------------------------------------
+; ModuleID = 'llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m'
+%0 = type opaque
+%struct.__block_descriptor = type { i64, i64 }
+declare void @llvm.dbg.declare(metadata, metadata) #1
+define internal void @"__24-[Main initWithContext:]_block_invoke"(i8* %.block_descriptor, i8* %obj) #0 {
+  %block = bitcast i8* %.block_descriptor to <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>*, !dbg !84
+  %block.captured-self = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, i32 0, i32 5, !dbg !84
+  call void @llvm.dbg.declare(metadata !{<{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block}, metadata !86), !dbg !87
+  ret void, !dbg !87
+}
+
+define internal void @"__24-[Main initWithContext:]_block_invoke_2"(i8* %.block_descriptor, i8* %object) #0 {
+  %block = bitcast i8* %.block_descriptor to <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>*, !dbg !103
+  %block.captured-self = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, i32 0, i32 5, !dbg !103
+  call void @llvm.dbg.declare(metadata !{<{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block}, metadata !105), !dbg !106
+  ret void, !dbg !106
+}
+
+!llvm.dbg.cu = !{!0}
+!0 = metadata !{i32 786449, i32 0, i32 16, metadata !1, metadata !"clang version 3.3 ", i1 false, metadata !"", i32 2, metadata !2, metadata !4, metadata !23, metadata !15, metadata !""} ; [ DW_TAG_compile_unit ] [llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m] [DW_LANG_ObjC]
+!1 = metadata !{i32 786473, metadata !"llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m", metadata !""} ; [ DW_TAG_file_type ]
+!2 = metadata !{metadata !3}
+!3 = metadata !{i32 786436, null, metadata !"", metadata !1, i32 20, i64 32, i64 32, i32 0, i32 0, null, metadata !4, i32 0, i32 0} ; [ DW_TAG_enumeration_type ] [line 20, size 32, align 32, offset 0] [from ]
+!4 = metadata !{}
+!15 = metadata !{i32 0}
+!23 = metadata !{metadata !38, metadata !42}
+!27 = metadata !{i32 786454, null, metadata !"id", metadata !1, i32 31, i64 0, i64 0, i64 0, i32 0, metadata !28} ; [ DW_TAG_typedef ] [id] [line 31, size 0, align 0, offset 0] [from ]
+!28 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !29} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from objc_object]
+!29 = metadata !{i32 786451, null, metadata !"objc_object", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !30, i32 0, null, null} ; [ DW_TAG_structure_type ] [objc_object] [line 0, size 0, align 0, offset 0] [from ]
+!30 = metadata !{metadata !31}
+!31 = metadata !{i32 786445, metadata !29, metadata !"isa", metadata !1, i32 0, i64 64, i64 0, i64 0, i32 0, metadata !32} ; [ DW_TAG_member ] [isa] [line 0, size 64, align 0, offset 0] [from ]
+!32 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 0, i64 0, i32 0, metadata !33} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 0, offset 0] [from objc_class]
+!33 = metadata !{i32 786451, null, metadata !"objc_class", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 4, null, null, i32 0} ; [ DW_TAG_structure_type ] [objc_class] [line 0, size 0, align 0, offset 0] [fwd] [from ]
+!34 = metadata !{i32 786451, i32 0, metadata !"Main", metadata !1, i32 23, i64 0, i64 0, i32 0, i32 1092, i32 0, i32 0, i32 16} ; [ DW_TAG_structure_type ] [Main] [line 23, size 0, align 0, offset 0] [artificial] [fwd] [from ]
+!38 = metadata !{i32 786478, i32 0, metadata !1, metadata !"__24-[Main initWithContext:]_block_invoke", metadata !"__24-[Main initWithContext:]_block_invoke", metadata !"", metadata !1, i32 33, metadata !39, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i8*, i8*)* @"__24-[Main initWithContext:]_block_invoke", null, null, metadata !15, i32 33} ; [ DW_TAG_subprogram ] [line 33] [local] [def] [__24-[Main initWithContext:]_block_invoke]
+!39 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !40, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!40 = metadata !{null, metadata !41, metadata !27}
+!41 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
+!42 = metadata !{i32 786478, i32 0, metadata !1, metadata !"__24-[Main initWithContext:]_block_invoke_2", metadata !"__24-[Main initWithContext:]_block_invoke_2", metadata !"", metadata !1, i32 35, metadata !39, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i8*, i8*)* @"__24-[Main initWithContext:]_block_invoke_2", null, null, metadata !15, i32 35} ; [ DW_TAG_subprogram ] [line 35] [local] [def] [__24-[Main initWithContext:]_block_invoke_2]
+!84 = metadata !{i32 33, i32 0, metadata !38, null}
+!86 = metadata !{i32 786688, metadata !38, metadata !"self", metadata !1, i32 41, metadata !34, i32 0, i32 0, i64 1, i64 32} ; [ DW_TAG_auto_variable ] [self] [line 41]
+!87 = metadata !{i32 41, i32 0, metadata !38, null}
+!103 = metadata !{i32 35, i32 0, metadata !42, null}
+!105 = metadata !{i32 786688, metadata !42, metadata !"self", metadata !1, i32 40, metadata !34, i32 0, i32 0, i64 1, i64 32} ; [ DW_TAG_auto_variable ] [self] [line 40]
+!106 = metadata !{i32 40, i32 0, metadata !42, null}