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
82 lines
4.2 KiB
LLVM
82 lines
4.2 KiB
LLVM
; RUN: opt %s -S -passes=instcombine -o - \
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; RUN: | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators %s -S -passes=instcombine -o - \
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; RUN: | FileCheck %s
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;; $ cat test.cpp
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;; void esc(int*);
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;; void fun() {
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;; int local[5];
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;; __builtin_memset(local, 8, 4 * 4);
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;; __builtin_memset(local, 0, 2 * 4);
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;; esc(local);
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;; }
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;; IR grabbed before instcombine in:
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;; clang++ -O2 -g -Xclang -fexperimental-assignment-tracking
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;; Instcombine is going to turn the second memset into a store. Check that it
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;; inherits the DIAssignID from the memset and that the dbg.assign's value
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;; component is correct.
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; CHECK: store i64 0, ptr %local, align 16{{.*}}, !DIAssignID ![[ID:[0-9]+]]
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; CHECK-NEXT: #dbg_assign(i64 0, !{{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 64), ![[ID]], ptr %local, !DIExpression(),
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define dso_local void @_Z3funv() local_unnamed_addr #0 !dbg !7 {
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entry:
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%local = alloca [5 x i32], align 16, !DIAssignID !16
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call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(), metadata !16, metadata ptr %local, metadata !DIExpression()), !dbg !17
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%0 = bitcast ptr %local to ptr, !dbg !18
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call void @llvm.lifetime.start.p0(i64 20, ptr %0) #5, !dbg !18
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%arraydecay = getelementptr inbounds [5 x i32], ptr %local, i64 0, i64 0, !dbg !19
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%1 = bitcast ptr %arraydecay to ptr, !dbg !19
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call void @llvm.memset.p0.i64(ptr align 16 %1, i8 8, i64 16, i1 false), !dbg !19, !DIAssignID !20
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call void @llvm.dbg.assign(metadata i8 8, metadata !11, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 128), metadata !20, metadata ptr %1, metadata !DIExpression()), !dbg !17
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call void @llvm.memset.p0.i64(ptr align 16 %1, i8 0, i64 8, i1 false), !dbg !21, !DIAssignID !22
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call void @llvm.dbg.assign(metadata i8 0, metadata !11, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !22, metadata ptr %1, metadata !DIExpression()), !dbg !17
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call void @_Z3escPi(ptr noundef %arraydecay), !dbg !23
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call void @llvm.lifetime.end.p0(i64 20, ptr %0) #5, !dbg !24
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ret void, !dbg !24
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}
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
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declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg)
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declare !dbg !25 dso_local void @_Z3escPi(ptr noundef) local_unnamed_addr
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
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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 = !{!2, !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 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 7, !"uwtable", i32 1}
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!6 = !{!"clang version 14.0.0"}
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!7 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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!10 = !{!11}
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!11 = !DILocalVariable(name: "local", scope: !7, file: !1, line: 3, type: !12)
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!12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 160, elements: !14)
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!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!14 = !{!15}
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!15 = !DISubrange(count: 5)
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!16 = distinct !DIAssignID()
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!17 = !DILocation(line: 0, scope: !7)
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!18 = !DILocation(line: 3, column: 3, scope: !7)
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!19 = !DILocation(line: 4, column: 3, scope: !7)
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!20 = distinct !DIAssignID()
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!21 = !DILocation(line: 5, column: 3, scope: !7)
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!22 = distinct !DIAssignID()
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!23 = !DILocation(line: 6, column: 3, scope: !7)
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!24 = !DILocation(line: 7, column: 1, scope: !7)
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!25 = !DISubprogram(name: "esc", linkageName: "_Z3escPi", scope: !1, file: !1, line: 1, type: !26, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !29)
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!26 = !DISubroutineType(types: !27)
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!27 = !{null, !28}
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
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!29 = !{}
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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