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4ece50737d
Remove LLVM flag -experimental-assignment-tracking. Assignment tracking is still enabled from Clang with the command line -Xclang -fexperimental-assignment-tracking which tells Clang to ask LLVM to run the pass declare-to-assign. That pass converts conventional debug intrinsics to assignment tracking metadata. With this patch it now also sets a module flag debug-info-assignment-tracking with the value `i1 true` (using the flag conflict rule `Max` since enabling assignment tracking on IR that contains only conventional debug intrinsics should cause no issues). Update the docs and tests too. Reviewed By: CarlosAlbertoEnciso Differential Revision: https://reviews.llvm.org/D142027
89 lines
4.5 KiB
LLVM
89 lines
4.5 KiB
LLVM
; RUN: llc %s -stop-after=finalize-isel -o - \
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; RUN: | FileCheck %s
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;;
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;; Backend counterpart to ../Generic/dbg-assign-loop-unroll. This IR was
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;; generated by running `opt -loop-unroll -S` on the IR in that test.
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;;
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;; Check that the backend can handle a mesh of dbg.assign and linked
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;; instructions.
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;;
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;; Generated from the following source:
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;; void esc(int*);
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;; void d(int p) {
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;; for (int i = 0; i < 2; ++i) {
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;; p = i;
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;; esc(&p);
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;; }
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;; }
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; CHECK: ![[p:[0-9]+]] = !DILocalVariable(name: "p",
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; CHECK: stack:
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; CHECK-NEXT: - { id: 0, name: p.addr, type: default, offset: 0, size: 4, alignment: 4,
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; CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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; CHECK-NEXT: debug-info-variable: '![[p]]', debug-info-expression: '!DIExpression()',
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; CHECK-NEXT: debug-info-location: '!{{.+}}' }
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local void @_Z1di(i32 %p) local_unnamed_addr !dbg !7 {
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entry:
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%p.addr = alloca i32, align 4
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store i32 %p, ptr %p.addr, align 4, !DIAssignID !19
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call void @llvm.dbg.assign(metadata i32 %p, metadata !12, metadata !DIExpression(), metadata !19, metadata ptr %p.addr, metadata !DIExpression()), !dbg !20
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call void @llvm.dbg.assign(metadata i32 0, metadata !13, metadata !DIExpression(), metadata !21, metadata ptr undef, metadata !DIExpression()), !dbg !22
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br label %for.body, !dbg !23
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for.body: ; preds = %entry
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store i32 0, ptr %p.addr, align 4, !dbg !24, !DIAssignID !27
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call void @llvm.dbg.assign(metadata i32 0, metadata !12, metadata !DIExpression(), metadata !27, metadata ptr %p.addr, metadata !DIExpression()), !dbg !24
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call void @_Z3escPi(ptr nonnull %p.addr), !dbg !28
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call void @llvm.dbg.assign(metadata i32 1, metadata !13, metadata !DIExpression(), metadata !29, metadata ptr undef, metadata !DIExpression()), !dbg !30
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store i32 1, ptr %p.addr, align 4, !dbg !24, !DIAssignID !27
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call void @llvm.dbg.assign(metadata i32 1, metadata !12, metadata !DIExpression(), metadata !27, metadata ptr %p.addr, metadata !DIExpression()), !dbg !24
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call void @_Z3escPi(ptr nonnull %p.addr), !dbg !28
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call void @llvm.dbg.assign(metadata i32 2, metadata !13, metadata !DIExpression(), metadata !29, metadata ptr undef, metadata !DIExpression()), !dbg !30
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ret void, !dbg !31
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}
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declare !dbg !32 dso_local void @_Z3escPi(ptr) local_unnamed_addr
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !1000}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 12.0.0"}
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!7 = distinct !DISubprogram(name: "d", linkageName: "_Z1di", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12, !13}
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!12 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!13 = !DILocalVariable(name: "i", scope: !14, file: !1, line: 3, type: !10)
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!14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)
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!19 = distinct !DIAssignID()
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!20 = !DILocation(line: 0, scope: !7)
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!21 = distinct !DIAssignID()
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!22 = !DILocation(line: 3, column: 12, scope: !14)
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!23 = !DILocation(line: 3, column: 3, scope: !14)
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!24 = !DILocation(line: 4, column: 7, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !26, file: !1, line: 3, column: 31)
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!26 = distinct !DILexicalBlock(scope: !14, file: !1, line: 3, column: 3)
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!27 = distinct !DIAssignID()
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!28 = !DILocation(line: 5, column: 5, scope: !25)
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!29 = distinct !DIAssignID()
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!30 = !DILocation(line: 3, column: 26, scope: !26)
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!31 = !DILocation(line: 7, column: 1, scope: !7)
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!32 = !DISubprogram(name: "esc", linkageName: "_Z3escPi", scope: !1, file: !1, line: 1, type: !33, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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!33 = !DISubroutineType(types: !34)
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!34 = !{null, !35}
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!35 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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