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
111 lines
5.2 KiB
LLVM
111 lines
5.2 KiB
LLVM
; RUN: opt -passes=mldst-motion -S %s -o - \
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; RUN: | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -passes=mldst-motion -S %s -o - \
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; RUN: | FileCheck %s
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;; $ cat test.cpp
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;; int cond;
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;; void esc(int*);
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;; void fun() {
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;; int a[4];
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;; if (cond)
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;; a[1] = 1;
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;; else
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;; a[1] = 2;
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;; esc(a);
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;; }
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;;
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;;
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;; mldst-motion will merge and sink the stores in if.then and if.else into
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;; if.end. Ensure the merged store has a DIAssignID linking it to the two
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;; dbg.assign intrinsics which have been left in their original blocks.
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; CHECK: if.then:
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; CHECK-NEXT: #dbg_assign(i32 1,{{.+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), ![[ID:[0-9]+]], ptr %1, !DIExpression(),
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; CHECK: if.else:
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; CHECK-NEXT: #dbg_assign(i32 2,{{.+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), ![[ID]], ptr %1, !DIExpression(),
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; CHECK: if.end:
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; CHECK: store i32 %.sink, ptr %1, align 4{{.+}}, !DIAssignID ![[ID]]
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@cond = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
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define dso_local void @_Z3funv() !dbg !11 {
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entry:
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%a = alloca [4 x i32], align 16, !DIAssignID !19
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call void @llvm.dbg.assign(metadata i1 undef, metadata !15, metadata !DIExpression(), metadata !19, metadata ptr %a, metadata !DIExpression()), !dbg !20
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call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %a) #4, !dbg !21
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%0 = load i32, ptr @cond, align 4, !dbg !22
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%tobool.not = icmp eq i32 %0, 0, !dbg !22
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br i1 %tobool.not, label %if.else, label %if.then, !dbg !28
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if.then: ; preds = %entry
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%arrayidx = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 1, !dbg !29
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store i32 1, ptr %arrayidx, align 4, !dbg !30, !DIAssignID !31
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call void @llvm.dbg.assign(metadata i32 1, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata !31, metadata ptr %arrayidx, metadata !DIExpression()), !dbg !20
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br label %if.end, !dbg !29
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if.else: ; preds = %entry
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%arrayidx1 = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 1, !dbg !32
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store i32 2, ptr %arrayidx1, align 4, !dbg !33, !DIAssignID !34
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call void @llvm.dbg.assign(metadata i32 2, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32), metadata !34, metadata ptr %arrayidx1, metadata !DIExpression()), !dbg !20
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%arraydecay = getelementptr inbounds [4 x i32], ptr %a, i64 0, i64 0, !dbg !35
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call void @_Z3escPi(ptr noundef nonnull %arraydecay), !dbg !36
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call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %a) #4, !dbg !37
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ret void, !dbg !37
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}
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
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declare !dbg !38 dso_local void @_Z3escPi(ptr noundef)
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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 = !{!2}
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!llvm.module.flags = !{!6, !7, !8, !9, !1000}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "cond", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
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!3 = !DIFile(filename: "test.cpp", directory: "/")
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!4 = !{!0}
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!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!6 = !{i32 7, !"Dwarf Version", i32 5}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !{i32 1, !"wchar_size", i32 4}
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!9 = !{i32 7, !"uwtable", i32 1}
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!10 = !{!"clang version 14.0.0"}
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!11 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !3, file: !3, line: 3, type: !12, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)
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!12 = !DISubroutineType(types: !13)
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!13 = !{null}
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!14 = !{!15}
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!15 = !DILocalVariable(name: "a", scope: !11, file: !3, line: 4, type: !16)
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!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !5, size: 128, elements: !17)
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!17 = !{!18}
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!18 = !DISubrange(count: 4)
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!19 = distinct !DIAssignID()
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!20 = !DILocation(line: 0, scope: !11)
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!21 = !DILocation(line: 4, column: 3, scope: !11)
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!22 = !DILocation(line: 5, column: 7, scope: !23)
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!23 = distinct !DILexicalBlock(scope: !11, file: !3, line: 5, column: 7)
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!28 = !DILocation(line: 5, column: 7, scope: !11)
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!29 = !DILocation(line: 6, column: 5, scope: !23)
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!30 = !DILocation(line: 6, column: 10, scope: !23)
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!31 = distinct !DIAssignID()
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!32 = !DILocation(line: 8, column: 5, scope: !23)
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!33 = !DILocation(line: 8, column: 10, scope: !23)
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!34 = distinct !DIAssignID()
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!35 = !DILocation(line: 9, column: 7, scope: !11)
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!36 = !DILocation(line: 9, column: 3, scope: !11)
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!37 = !DILocation(line: 10, column: 1, scope: !11)
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!38 = !DISubprogram(name: "esc", linkageName: "_Z3escPi", scope: !3, file: !3, line: 2, type: !39, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !42)
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!39 = !DISubroutineType(types: !40)
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!40 = !{null, !41}
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!41 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
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!42 = !{}
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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