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5b721561aa
Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
113 lines
5.4 KiB
LLVM
113 lines
5.4 KiB
LLVM
; RUN: llc -mtriple x86_64-apple-darwin -filetype=obj -o %t.o < %s
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; RUN: llvm-dwarfdump %t.o | FileCheck %s
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;
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; Test that DW_AT_location is generated for a captured "self" inside a
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; block.
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;
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; This test is split into two parts, the frontend part can be found at
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; llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m
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;
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; CHECK: {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
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; CHECK: DW_TAG_variable
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_location
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}"self"{{.*}}
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;
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; CHECK: {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
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; CHECK: DW_TAG_variable
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_location
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}"self"{{.*}}
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;
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; Generated (and then reduced) from
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; ----------------------------------------------------------------------
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;
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; @class T;
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; @interface S
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; @end
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; @interface Mode
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; -(int) count;
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; @end
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; @interface Context
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; @end
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; @interface ViewController
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; @property (nonatomic, readwrite, strong) Context *context;
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; @end
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; typedef enum {
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; Unknown = 0,
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; } State;
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; @interface Main : ViewController
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; {
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; T * t1;
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; T * t2;
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; }
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; @property(readwrite, nonatomic) State state;
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; @end
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; @implementation Main
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; - (id) initWithContext:(Context *) context
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; {
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; t1 = [self.context withBlock:^(id obj){
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; id *mode1;
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; t2 = [mode1 withBlock:^(id object){
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; Mode *mode2 = object;
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; if ([mode2 count] != 0) {
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; self.state = 0;
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; }
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; }];
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; }];
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; }
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; @end
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; ----------------------------------------------------------------------
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; ModuleID = 'llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m'
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%0 = type opaque
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%struct.__block_descriptor = type { i64, i64 }
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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define internal void @"__24-[Main initWithContext:]_block_invoke"(i8* %.block_descriptor, i8* %obj) #0 !dbg !38 {
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%block = bitcast i8* %.block_descriptor to <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>*, !dbg !84
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%block.captured-self = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, i32 0, i32 5, !dbg !84
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call void @llvm.dbg.declare(metadata <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, metadata !86, metadata !110), !dbg !87
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ret void, !dbg !87
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}
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define internal void @"__24-[Main initWithContext:]_block_invoke_2"(i8* %.block_descriptor, i8* %object) #0 !dbg !42 {
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%block = bitcast i8* %.block_descriptor to <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>*, !dbg !103
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%block.captured-self = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, i32 0, i32 5, !dbg !103
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call void @llvm.dbg.declare(metadata <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>* %block, metadata !105, metadata !109), !dbg !106
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ret void, !dbg !106
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!108}
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!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.3 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !107, enums: !2, retainedTypes: !4, subprograms: !23, globals: !15, imports: !15)
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!1 = !DIFile(filename: "llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m", directory: "")
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!2 = !{!3}
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!3 = !DICompositeType(tag: DW_TAG_enumeration_type, line: 20, size: 32, align: 32, file: !107, elements: !4)
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!4 = !{}
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!15 = !{}
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!23 = !{!38, !42}
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!27 = !DIDerivedType(tag: DW_TAG_typedef, name: "id", line: 31, file: !107, baseType: !28)
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !29)
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!29 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_object", file: !107, elements: !30)
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!30 = !{!31}
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!31 = !DIDerivedType(tag: DW_TAG_member, name: "isa", size: 64, file: !107, scope: !29, baseType: !32)
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!32 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !33)
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!33 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_class", flags: DIFlagFwdDecl, file: !107)
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!34 = !DICompositeType(tag: DW_TAG_structure_type, name: "Main", line: 23, flags: DIFlagArtificial | DIFlagObjectPointer, runtimeLang: DW_LANG_ObjC, file: !107)
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!38 = distinct !DISubprogram(name: "__24-[Main initWithContext:]_block_invoke", line: 33, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 33, file: !1, scope: !1, type: !39, variables: !15)
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!39 = !DISubroutineType(types: !40)
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!40 = !{null, !41, !27}
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!41 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: null)
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!42 = distinct !DISubprogram(name: "__24-[Main initWithContext:]_block_invoke_2", line: 35, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 35, file: !1, scope: !1, type: !39, variables: !15)
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!84 = !DILocation(line: 33, scope: !38)
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!86 = !DILocalVariable(name: "self", line: 41, scope: !38, file: !1, type: !34)
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!87 = !DILocation(line: 41, scope: !38)
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!103 = !DILocation(line: 35, scope: !42)
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!105 = !DILocalVariable(name: "self", line: 40, scope: !42, file: !1, type: !34)
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!106 = !DILocation(line: 40, scope: !42)
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!107 = !DIFile(filename: "llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m", directory: "")
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!108 = !{i32 1, !"Debug Info Version", i32 3}
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!109 = !DIExpression(DW_OP_deref, DW_OP_plus, 32)
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!110 = !DIExpression(DW_OP_deref, DW_OP_plus, 32)
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