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
89 lines
3.9 KiB
LLVM
89 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -S -passes=instcombine -instcombine-lower-dbg-declare=0 | FileCheck %s
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; In this example, instcombine wants to turn "local" into an i64, since that's
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; how it is stored. It should keep the debug info referring to the alloca when
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; it does the replacement.
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; C source:
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; struct Foo {
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; int x, y;
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; };
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; void escape(const ptr);
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; void f(struct Foo *p) {
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; struct Foo local;
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; *(__int64 *)&local = *(__int64 *)p;
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; escape(&local);
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; }
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; ModuleID = '<stdin>'
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source_filename = "t.c"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.11.25508"
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%struct.Foo = type { i32, i32 }
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define void @f(ptr %p) !dbg !11 {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LOCAL:%.*]] = alloca [[STRUCT_FOO:%.*]], align 4
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; CHECK-NEXT: #dbg_declare(ptr [[LOCAL]], [[META22:![0-9]+]], !DIExpression(), [[META23:![0-9]+]])
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; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[P:%.*]], align 8, !dbg [[DBG24:![0-9]+]], !tbaa [[TBAA25:![0-9]+]]
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; CHECK-NEXT: store i64 [[TMP0]], ptr [[LOCAL]], align 4, !dbg [[DBG29:![0-9]+]], !tbaa [[TBAA25]]
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; CHECK-NEXT: call void @escape(ptr nonnull [[LOCAL]]), !dbg [[DBG30:![0-9]+]]
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; CHECK-NEXT: ret void, !dbg [[DBG31:![0-9]+]]
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;
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entry:
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%local = alloca %struct.Foo, align 4
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call void @llvm.dbg.declare(metadata ptr %local, metadata !22, metadata !DIExpression()), !dbg !25
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%0 = load i64, ptr %p, align 8, !dbg !26, !tbaa !27
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store i64 %0, ptr %local, align 4, !dbg !32, !tbaa !27
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call void @escape(ptr %local), !dbg !34
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ret void, !dbg !35
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare void @escape(ptr)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7, !8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
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!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "d7473625866433067a75fd7d03d2abf7")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
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!5 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
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!6 = !{i32 2, !"CodeView", i32 1}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !{i32 1, !"wchar_size", i32 2}
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!9 = !{i32 7, !"PIC Level", i32 2}
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!10 = !{!"clang version 6.0.0 "}
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!11 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !20)
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!12 = !DISubroutineType(types: !13)
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!13 = !{null, !14}
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64)
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!15 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !1, line: 1, size: 64, elements: !16)
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!16 = !{!17, !19}
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !15, file: !1, line: 2, baseType: !18, size: 32)
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!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!19 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !15, file: !1, line: 2, baseType: !18, size: 32, offset: 32)
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!20 = !{!21, !22}
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!21 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !1, line: 5, type: !14)
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!22 = !DILocalVariable(name: "local", scope: !11, file: !1, line: 6, type: !15)
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!23 = !DILocation(line: 5, column: 20, scope: !11)
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!24 = !DILocation(line: 6, column: 3, scope: !11)
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!25 = !DILocation(line: 6, column: 14, scope: !11)
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!26 = !DILocation(line: 7, column: 24, scope: !11)
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!27 = !{!28, !28, i64 0}
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!28 = !{!"long long", !29, i64 0}
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!29 = !{!"omnipotent char", !30, i64 0}
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!30 = !{!"Simple C/C++ TBAA"}
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!31 = !DILocation(line: 7, column: 3, scope: !11)
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!32 = !DILocation(line: 7, column: 22, scope: !11)
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!33 = !DILocation(line: 8, column: 10, scope: !11)
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!34 = !DILocation(line: 8, column: 3, scope: !11)
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!35 = !DILocation(line: 9, column: 1, scope: !11)
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