49 lines
2.2 KiB
LLVM
49 lines
2.2 KiB
LLVM
; RUN: opt %s -passes=adce -experimental-assignment-tracking -S -o - \
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; RUN: | FileCheck %s
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;; $ cat test.c
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;; void fun(int local) {}
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;;
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;; $ clang test.c -g -O1 -Xclang -disable-llvm-passes | opt -S -passes=declare-to-assign
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;; Check that the dbg.assign intrinsics that are considered "out of scope" (dbg
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;; attachments have been deleted) but still linked to an instruction are not
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;; deleted by ADCE.
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; CHECK: llvm.dbg.assign
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; CHECK: llvm.dbg.assign
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define dso_local void @fun(i32 noundef %local) #0 !dbg !7 {
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entry:
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%local.addr = alloca i32, align 4, !DIAssignID !13
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call void @llvm.dbg.assign(metadata i1 undef, metadata !12, metadata !DIExpression(), metadata !13, metadata ptr %local.addr, metadata !DIExpression()), !dbg !14
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store i32 %local, ptr %local.addr, align 4, !DIAssignID !19
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call void @llvm.dbg.assign(metadata i32 %local, metadata !12, metadata !DIExpression(), metadata !19, metadata ptr %local.addr, metadata !DIExpression()), !dbg !14
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ret void
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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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}
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!llvm.ident = !{!6}
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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, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", 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", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "local", arg: 1, scope: !7, file: !1, line: 1, type: !10)
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!13 = distinct !DIAssignID()
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!14 = !DILocation(line: 0, scope: !7)
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!19 = distinct !DIAssignID()
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!20 = !DILocation(line: 1, column: 22, scope: !7)
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