094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
83 lines
4.4 KiB
LLVM
83 lines
4.4 KiB
LLVM
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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; RUN: opt < %s -passes=instcombine -S --try-experimental-debuginfo-iterators | FileCheck %s
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; Make sure to update the debug value after dead code elimination.
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; CHECK: %call = call signext i8 @b(i32 6), !dbg !39
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; CHECK-NEXT: #dbg_value(i8 %call, !30, !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_signed, DW_OP_LLVM_convert, 32, DW_ATE_signed, DW_OP_stack_value), !38
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@e = common local_unnamed_addr global i8 0, align 1, !dbg !0
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@c = common local_unnamed_addr global i32 0, align 4, !dbg !6
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@d = common local_unnamed_addr global i32 0, align 4, !dbg !10
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define signext i8 @b(i32 %f) local_unnamed_addr #0 !dbg !18 {
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entry:
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call void @llvm.dbg.value(metadata i32 %f, metadata !22, metadata !DIExpression()), !dbg !23
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%conv = trunc i32 %f to i8, !dbg !24
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ret i8 %conv, !dbg !25
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}
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define i32 @main() local_unnamed_addr #0 !dbg !26 {
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entry:
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%0 = load i8, ptr @e, align 1, !dbg !31, !tbaa !32
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%conv = sext i8 %0 to i32, !dbg !31
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store i32 %conv, ptr @c, align 4, !dbg !35, !tbaa !36
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call void @llvm.dbg.value(metadata i32 -1372423381, metadata !30, metadata !DIExpression()), !dbg !38
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%call = call signext i8 @b(i32 6), !dbg !39
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%conv1 = sext i8 %call to i32, !dbg !39
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call void @llvm.dbg.value(metadata i32 %conv1, metadata !30, metadata !DIExpression()), !dbg !38
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%1 = load i32, ptr @d, align 4, !dbg !40, !tbaa !36
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%call2 = call i32 (...) @optimize_me_not(), !dbg !41
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ret i32 0, !dbg !42
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}
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declare i32 @optimize_me_not(...) local_unnamed_addr #1
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!13, !14, !15, !16}
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!llvm.ident = !{!17}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "e", scope: !2, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project b306ef12f046353ea5bda4b3b77759e57909a0db)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: GNU)
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!3 = !DIFile(filename: "a.c", directory: "/Users/davide/llvm/build/bin")
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!4 = !{}
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!5 = !{!6, !10, !0}
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!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
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!8 = !DIDerivedType(tag: DW_TAG_typedef, name: "a", file: !3, line: 1, baseType: !9)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
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!11 = distinct !DIGlobalVariable(name: "d", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
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!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!15 = !{i32 1, !"wchar_size", i32 4}
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!16 = !{i32 7, !"PIC Level", i32 2}
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!17 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project b306ef12f046353ea5bda4b3b77759e57909a0db)"}
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!18 = distinct !DISubprogram(name: "b", scope: !3, file: !3, line: 4, type: !19, scopeLine: 4, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !21)
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!19 = !DISubroutineType(types: !20)
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!20 = !{!12, !9}
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!21 = !{!22}
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!22 = !DILocalVariable(name: "f", arg: 1, scope: !18, file: !3, line: 4, type: !9)
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!23 = !DILocation(line: 4, column: 9, scope: !18)
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!24 = !DILocation(line: 4, column: 21, scope: !18)
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!25 = !DILocation(line: 4, column: 14, scope: !18)
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!26 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 5, type: !27, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !29)
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!27 = !DISubroutineType(types: !28)
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!28 = !{!9}
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!29 = !{!30}
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!30 = !DILocalVariable(name: "l_1499", scope: !26, file: !3, line: 7, type: !8)
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!31 = !DILocation(line: 6, column: 7, scope: !26)
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!32 = !{!33, !33, i64 0}
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!33 = !{!"omnipotent char", !34, i64 0}
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!34 = !{!"Simple C/C++ TBAA"}
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!35 = !DILocation(line: 6, column: 5, scope: !26)
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!36 = !{!37, !37, i64 0}
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!37 = !{!"int", !33, i64 0}
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!38 = !DILocation(line: 7, column: 5, scope: !26)
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!39 = !DILocation(line: 8, column: 12, scope: !26)
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!40 = !DILocation(line: 9, column: 11, scope: !26)
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!41 = !DILocation(line: 10, column: 3, scope: !26)
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!42 = !DILocation(line: 11, column: 1, scope: !26)
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