632f44e5ed
This patch trivially updates various opt passes to handle DPVAssigns. In all cases, this means some combination of generifying existing code to handle DPValues and DbgAssignIntrinsics, iterating over DPValues where previously we did not, or duplicating code for DbgAssignIntrinsics to the equivalent DPValue function (in inlining and salvageDebugInfo).
83 lines
4.1 KiB
LLVM
83 lines
4.1 KiB
LLVM
; RUN: opt %s -passes=loop-deletion -S -o - \
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; RUN: | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators %s -passes=loop-deletion -S -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 Counter = 0;
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;; for (; Counter < 2; Counter++) {}
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;; esc(&Counter);
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;; }
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;;
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;; IR grabbed before loop-deletion in:
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;; $ clang++ -O2 -g -Xclang -fexperimental-assignment-tracking
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;;
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;; for.cond is a dead loop - the debug intrinsic inside will be moved to the
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;; exit block (and made undef) and then the loop will be deleted. Ensure that
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;; the dbg.assign intrinsic doesn't get transformed into a dbg.value by
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;; mistake.
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; CHECK: for.end:
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; CHECK-NEXT: call void @llvm.dbg.assign(metadata i32 undef,{{.+}}, metadata !DIExpression({{.+}}), metadata ![[ID:[0-9]+]], metadata ptr %Counter, metadata !DIExpression())
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; CHECK-NEXT: store i32 2, ptr %Counter, align 4,{{.*}}!DIAssignID ![[ID]]
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define dso_local void @_Z3funv() local_unnamed_addr #0 !dbg !7 {
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entry:
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%Counter = alloca i32, align 4, !DIAssignID !13
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call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(), metadata !13, metadata ptr %Counter, metadata !DIExpression()), !dbg !14
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call void @llvm.dbg.assign(metadata i32 0, metadata !11, metadata !DIExpression(), metadata !16, metadata ptr %Counter, metadata !DIExpression()), !dbg !14
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br label %for.cond, !dbg !17
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for.cond: ; preds = %for.cond, %entry
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call void @llvm.dbg.assign(metadata i32 undef, metadata !11, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value), metadata !16, metadata ptr %Counter, metadata !DIExpression()), !dbg !14
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br i1 false, label %for.cond, label %for.end, !dbg !18, !llvm.loop !20
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for.end: ; preds = %for.cond
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store i32 2, ptr %Counter, align 4, !dbg !14, !DIAssignID !16
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call void @_Z3escPi(ptr noundef nonnull %Counter), !dbg !27
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ret void, !dbg !28
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}
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declare void @llvm.lifetime.start.p0i8(i64 immarg, ptr nocapture)
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declare !dbg !29 dso_local void @_Z3escPi(ptr noundef) local_unnamed_addr
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declare void @llvm.lifetime.end.p0i8(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: "Counter", scope: !7, file: !1, line: 3, type: !12)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = distinct !DIAssignID()
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!14 = !DILocation(line: 0, scope: !7)
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!15 = !DILocation(line: 3, column: 3, scope: !7)
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!16 = distinct !DIAssignID()
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!17 = !DILocation(line: 4, column: 3, scope: !7)
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!18 = !DILocation(line: 4, column: 3, scope: !19)
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!19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)
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!20 = distinct !{!20, !18, !21, !22}
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!21 = !DILocation(line: 4, column: 35, scope: !19)
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!22 = !{!"llvm.loop.mustprogress"}
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!27 = !DILocation(line: 5, column: 3, scope: !7)
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!28 = !DILocation(line: 6, column: 1, scope: !7)
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!29 = !DISubprogram(name: "esc", linkageName: "_Z3escPi", scope: !1, file: !1, line: 1, type: !30, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !33)
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!30 = !DISubroutineType(types: !31)
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!31 = !{null, !32}
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!32 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!33 = !{}
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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