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
56 lines
2.5 KiB
LLVM
56 lines
2.5 KiB
LLVM
; RUN: opt -S -loop-reduce %s | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -S -loop-reduce %s | FileCheck %s
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;; Ensure that scev-based salvaging in LSR does not select an IV containing
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;; an 'undef' element.
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target triple = "x86_64-unknown-linux-gnu"
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define i16 @n(i1 %c1) !dbg !8 {
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entry:
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br i1 %c1, label %m, label %for.body
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for.body: ; preds = %for.body, %entry
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%iv = phi i16 [ %ivdec, %for.body ], [ 14, %entry ]
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%ivdec = sub i16 %iv, 1
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call void @llvm.dbg.value(metadata i16 %iv, metadata !21, metadata !DIExpression()), !dbg !19
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br label %for.body
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m: ; preds = %m, %entry
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%0 = phi i16 [ 3, %m ], [ 6, %entry ]
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%gg = add i16 %0, 23
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; CHECK: #dbg_value(i16 poison, !{{[0-9]+}}, !DIExpression(),
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call void @llvm.dbg.value(metadata i16 %0, metadata !14, metadata !DIExpression()), !dbg !19
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br label %m
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}
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; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "reduced.c", 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 1}
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!6 = !{i32 7, !"frame-pointer", i32 2}
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!7 = !{!"clang version 14.0.0"}
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!8 = distinct !DISubprogram(name: "n", scope: !1, file: !1, line: 18, type: !9, scopeLine: 18, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11}
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!11 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!12 = !{!13}
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!13 = !DILabel(scope: !8, name: "m", file: !1, line: 22)
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!14 = !DILocalVariable(name: "k", arg: 2, scope: !15, file: !1, line: 9, type: !11)
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!15 = distinct !DISubprogram(name: "i", scope: !1, file: !1, line: 9, type: !16, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !18)
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!16 = !DISubroutineType(types: !17)
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!17 = !{!11, !11, !11}
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!18 = !{!14}
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!19 = !DILocation(line: 0, scope: !15, inlinedAt: !20)
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!20 = distinct !DILocation(line: 23, scope: !8)
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!21 = !DILocalVariable(name: "x", arg: 2, scope: !15, file: !1, line: 1, type: !11)
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