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a52cfbb4e3
For metadata postpass linking, after importing all functions, we need to recursively walk through any nodes reached via imported functions to locate needed subprogram metadata. Some might only be reached indirectly via the variable list for an inlined function. llvm-svn: 258728
91 lines
4.6 KiB
LLVM
91 lines
4.6 KiB
LLVM
; Do setup work for all below tests: generate bitcode and combined index
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; RUN: llvm-as -function-summary %s -o %t.bc
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; RUN: llvm-as -function-summary %p/Inputs/thinlto_funcimport_debug.ll -o %t2.bc
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; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
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; If we import func1 and not func2 we should only link DISubprogram for func1
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; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=func1:%t.bc -S | FileCheck %s
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; CHECK: declare i32 @func2
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; CHECK: define available_externally i32 @func1
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; Extract out the list of subprograms from each compile unit and ensure
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; that neither contains null.
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; CHECK: !{{[0-9]+}} = distinct !DICompileUnit({{.*}} subprograms: ![[SPs1:[0-9]+]]
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; CHECK-NOT: ![[SPs1]] = !{{{.*}}null{{.*}}}
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; CHECK: !{{[0-9]+}} = distinct !DICompileUnit({{.*}} subprograms: ![[SPs2:[0-9]+]]
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; CHECK-NOT: ![[SPs2]] = !{{{.*}}null{{.*}}}
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; CHECK: distinct !DISubprogram(name: "func1"
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; CHECK-NOT: distinct !DISubprogram(name: "func2"
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; CHECK: distinct !DISubprogram(name: "func3"
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; CHECK: distinct !DISubprogram(name: "func4"
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; ModuleID = 'dbg.o'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind readnone uwtable
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define i32 @func1(i32 %n) #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !9, metadata !17), !dbg !18
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tail call void @llvm.dbg.value(metadata i32 5, i64 0, metadata !10, metadata !17), !dbg !19
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%cmp = icmp sgt i32 %n, 10, !dbg !20
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%. = select i1 %cmp, i32 10, i32 5, !dbg !22
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tail call void @llvm.dbg.value(metadata i32 %., i64 0, metadata !10, metadata !17), !dbg !19
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ret i32 %., !dbg !23
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}
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; Function Attrs: nounwind readnone uwtable
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define i32 @func2(i32 %n) #0 !dbg !11 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !13, metadata !17), !dbg !24
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ret i32 %n, !dbg !25
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind readnone uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!14, !15}
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!llvm.ident = !{!16}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
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!1 = !DIFile(filename: "dbg.c", directory: ".")
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!2 = !{}
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!3 = !{!4, !11, !27, !30}
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!4 = distinct !DISubprogram(name: "func1", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, variables: !8)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{!9, !10}
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!9 = !DILocalVariable(name: "n", arg: 1, scope: !4, file: !1, line: 1, type: !7)
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!10 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 2, type: !7)
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!11 = distinct !DISubprogram(name: "func2", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, variables: !12)
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!12 = !{!13}
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!13 = !DILocalVariable(name: "n", arg: 1, scope: !11, file: !1, line: 8, type: !7)
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!14 = !{i32 2, !"Dwarf Version", i32 4}
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!15 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
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!17 = !DIExpression()
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!18 = !DILocation(line: 1, column: 15, scope: !4)
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!19 = !DILocation(line: 2, column: 7, scope: !4)
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!20 = !DILocation(line: 3, column: 9, scope: !21, inlinedAt: !26)
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!21 = distinct !DILexicalBlock(scope: !27, file: !1, line: 3, column: 7)
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!22 = !DILocation(line: 3, column: 7, scope: !4)
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!23 = !DILocation(line: 5, column: 3, scope: !4)
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!24 = !DILocation(line: 8, column: 15, scope: !11)
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!25 = !DILocation(line: 9, column: 3, scope: !11)
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!26 = !DILocation(line: 9, column: 3, scope: !4)
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!27 = distinct !DISubprogram(name: "func3", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, variables: !28)
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!28 = !{!29}
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!29 = !DILocalVariable(name: "n", arg: 1, scope: !30, file: !1, line: 8, type: !7)
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!30 = distinct !DISubprogram(name: "func4", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, variables: !31)
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!31 = !{!32}
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!32 = !DILocalVariable(name: "n", arg: 1, scope: !30, file: !1, line: 8, type: !7)
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