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1; RUN: opt -run-twice -passes=verify -S -o - %s | FileCheck %s2 3; The ValueMap shared between CloneFunctionInto calls within CloneModule needs4; to contain identity mappings for all of the DISubprogram's to prevent them5; from being duplicated by MapMetadata / RemapInstruction calls, this is6; achieved via DebugInfoFinder collecting all the DISubprogram's. However,7; CloneFunctionInto was missing calls into DebugInfoFinder for functions w/o8; DISubprogram's attached, but still referring DISubprogram's from within.9;10; This is to make sure we don't regress on that.11 12; Derived from the following C-snippet13;14; int inlined(int j);15; __attribute__((nodebug)) int nodebug(int k) { return inlined(k); }16; __attribute__((always_inline)) int inlined(int j) { return j * 2; }17;18; compiled with `clang -O1 -g3 -emit-llvm -S` by removing19;20; call void @llvm.dbg.value(metadata i32 %k, metadata !8, metadata !DIExpression()), !dbg !1421;22; line from @nodebug function.23 24; The @llvm.dbg.value call is manually removed from @nodebug as not having25; it there also may cause an incorrect remapping of the call in a case of a26; regression, not just a duplication of a DISubprogram. Namely, the call's27; metadata !8 2nd argument and the !dbg !14 debug location may get remapped28; to reference different copies of the DISubprogram, which is verified by IR29; Verifier, while having DISubprogram duplicates is not.30 31; CHECK: DISubprogram32; CHECK-NOT: DISubprogram33 34source_filename = "clone-module.c"35target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"36target triple = "x86_64-apple-macosx"37 38; Function Attrs: nounwind readnone ssp uwtable39define i32 @nodebug(i32 %k) local_unnamed_addr #0 {40entry:41 %mul.i = shl nsw i32 %k, 1, !dbg !1542 ret i32 %mul.i43}44 45; Function Attrs: alwaysinline nounwind readnone ssp uwtable46define i32 @inlined(i32 %j) local_unnamed_addr #1 !dbg !9 {47entry:48 call void @llvm.dbg.value(metadata i32 %j, metadata !8, metadata !DIExpression()), !dbg !1449 %mul = shl nsw i32 %j, 1, !dbg !1550 ret i32 %mul, !dbg !1651}52 53; Function Attrs: nounwind readnone speculatable54declare void @llvm.dbg.value(metadata, metadata, metadata) #255 56attributes #0 = { nounwind readnone ssp uwtable }57attributes #1 = { alwaysinline nounwind readnone ssp uwtable }58attributes #2 = { nounwind readnone speculatable }59 60!llvm.dbg.cu = !{!0}61!llvm.module.flags = !{!3, !4, !5, !6}62!llvm.ident = !{!7}63 64!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)65!1 = !DIFile(filename: "clone-module.c", directory: "/somewhere")66!2 = !{}67!3 = !{i32 2, !"Dwarf Version", i32 4}68!4 = !{i32 2, !"Debug Info Version", i32 3}69!5 = !{i32 1, !"wchar_size", i32 4}70!6 = !{i32 7, !"PIC Level", i32 2}71!7 = !{!"clang version 7.0.0"}72!8 = !DILocalVariable(name: "j", arg: 1, scope: !9, file: !1, line: 3, type: !12)73!9 = distinct !DISubprogram(name: "inlined", scope: !1, file: !1, line: 3, type: !10, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)74!10 = !DISubroutineType(types: !11)75!11 = !{!12, !12}76!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)77!13 = !{!8}78!14 = !DILocation(line: 3, column: 48, scope: !9)79!15 = !DILocation(line: 3, column: 62, scope: !9)80!16 = !DILocation(line: 3, column: 53, scope: !9)81