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https://github.com/c64scene-ar/llvm-6502.git
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02474a32eb
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
7.1 KiB
LLVM
113 lines
7.1 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 {
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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* }>* %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 {
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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* }>* %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 = metadata !{i32 786449, metadata !107, i32 16, metadata !"clang version 3.3 ", i1 false, metadata !"", i32 2, metadata !2, metadata !4, metadata !23, metadata !15, metadata !15, metadata !""} ; [ DW_TAG_compile_unit ] [llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m] [DW_LANG_ObjC]
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!1 = metadata !{i32 786473, metadata !107} ; [ DW_TAG_file_type ]
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!2 = metadata !{metadata !3}
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!3 = metadata !{i32 786436, metadata !107, null, metadata !"", i32 20, i64 32, i64 32, i32 0, i32 0, null, metadata !4, i32 0, null, null, null} ; [ DW_TAG_enumeration_type ] [line 20, size 32, align 32, offset 0] [def] [from ]
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!4 = metadata !{}
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!15 = metadata !{}
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!23 = metadata !{metadata !38, metadata !42}
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!27 = metadata !{i32 786454, metadata !107, null, metadata !"id", 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 ]
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!28 = metadata !{i32 786447, null, null, metadata !"", 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]
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!29 = metadata !{i32 786451, metadata !107, null, metadata !"objc_object", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !30, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [objc_object] [line 0, size 0, align 0, offset 0] [def] [from ]
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!30 = metadata !{metadata !31}
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!31 = metadata !{i32 786445, metadata !107, metadata !29, metadata !"isa", 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 ]
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!32 = metadata !{i32 786447, null, null, metadata !"", 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]
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!33 = metadata !{i32 786451, metadata !107, null, metadata !"objc_class", i32 0, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [objc_class] [line 0, size 0, align 0, offset 0] [decl] [from ]
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!34 = metadata !{i32 786451, metadata !107, null, metadata !"Main", i32 23, i64 0, i64 0, i32 0, i32 1092, null, i32 0, i32 16, null, null, null} ; [ DW_TAG_structure_type ] [Main] [line 23, size 0, align 0, offset 0] [artificial] [decl] [from ]
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!38 = metadata !{i32 786478, metadata !1, metadata !1, metadata !"__24-[Main initWithContext:]_block_invoke", metadata !"__24-[Main initWithContext:]_block_invoke", metadata !"", 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]
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!39 = metadata !{i32 786453, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !40, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!40 = metadata !{null, metadata !41, metadata !27}
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!41 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
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!42 = metadata !{i32 786478, metadata !1, metadata !1, metadata !"__24-[Main initWithContext:]_block_invoke_2", metadata !"__24-[Main initWithContext:]_block_invoke_2", metadata !"", 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]
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!84 = metadata !{i32 33, i32 0, metadata !38, null}
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!86 = metadata !{i32 786688, metadata !38, metadata !"self", metadata !1, i32 41, metadata !34, i32 0, i32 0} ;; [ DW_TAG_auto_variable ] [self] [line 41]
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!87 = metadata !{i32 41, i32 0, metadata !38, null}
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!103 = metadata !{i32 35, i32 0, metadata !42, null}
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!105 = metadata !{i32 786688, metadata !42, metadata !"self", metadata !1, i32 40, metadata !34, i32 0, i32 0} ;; [ DW_TAG_auto_variable ] [self] [line 40]
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!106 = metadata !{i32 40, i32 0, metadata !42, null}
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!107 = metadata !{metadata !"llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m", metadata !""}
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!108 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!109 = metadata !{i32 786690, i64 34, i64 32} ; [DW_OP_plus 32]
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!110 = metadata !{i32 786690, i64 34, i64 32} ; [DW_OP_plus 32]
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