| ; RUN: opt -run-twice -passes=verify -S -o - %s | FileCheck %s |
| |
| ; The ValueMap shared between CloneFunctionInto calls within CloneModule needs |
| ; to contain identity mappings for all of the DISubprogram's to prevent them |
| ; from being duplicated by MapMetadata / RemapInstruction calls, this is |
| ; achieved via DebugInfoFinder collecting all the DISubprogram's. However, |
| ; CloneFunctionInto was missing calls into DebugInfoFinder for functions w/o |
| ; DISubprogram's attached, but still referring DISubprogram's from within. |
| ; |
| ; This is to make sure we don't regress on that. |
| |
| ; Derived from the following C-snippet |
| ; |
| ; int inlined(int j); |
| ; __attribute__((nodebug)) int nodebug(int k) { return inlined(k); } |
| ; __attribute__((always_inline)) int inlined(int j) { return j * 2; } |
| ; |
| ; compiled with `clang -O1 -g3 -emit-llvm -S` by removing |
| ; |
| ; call void @llvm.dbg.value(metadata i32 %k, metadata !8, metadata !DIExpression()), !dbg !14 |
| ; |
| ; line from @nodebug function. |
| |
| ; The @llvm.dbg.value call is manually removed from @nodebug as not having |
| ; it there also may cause an incorrect remapping of the call in a case of a |
| ; regression, not just a duplication of a DISubprogram. Namely, the call's |
| ; metadata !8 2nd argument and the !dbg !14 debug location may get remapped |
| ; to reference different copies of the DISubprogram, which is verified by IR |
| ; Verifier, while having DISubprogram duplicates is not. |
| |
| ; CHECK: DISubprogram |
| ; CHECK-NOT: DISubprogram |
| |
| source_filename = "clone-module.c" |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx" |
| |
| ; Function Attrs: nounwind readnone ssp uwtable |
| define i32 @nodebug(i32 %k) local_unnamed_addr #0 { |
| entry: |
| %mul.i = shl nsw i32 %k, 1, !dbg !15 |
| ret i32 %mul.i |
| } |
| |
| ; Function Attrs: alwaysinline nounwind readnone ssp uwtable |
| define i32 @inlined(i32 %j) local_unnamed_addr #1 !dbg !9 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 %j, metadata !8, metadata !DIExpression()), !dbg !14 |
| %mul = shl nsw i32 %j, 1, !dbg !15 |
| ret i32 %mul, !dbg !16 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| attributes #0 = { nounwind readnone ssp uwtable } |
| attributes #1 = { alwaysinline nounwind readnone ssp uwtable } |
| attributes #2 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "clone-module.c", directory: "/somewhere") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{i32 7, !"PIC Level", i32 2} |
| !7 = !{!"clang version 7.0.0"} |
| !8 = !DILocalVariable(name: "j", arg: 1, scope: !9, file: !1, line: 3, type: !12) |
| !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) |
| !10 = !DISubroutineType(types: !11) |
| !11 = !{!12, !12} |
| !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !{!8} |
| !14 = !DILocation(line: 3, column: 48, scope: !9) |
| !15 = !DILocation(line: 3, column: 62, scope: !9) |
| !16 = !DILocation(line: 3, column: 53, scope: !9) |