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ce9de68594
The function importer was still materializing metadata when modules were loaded for function importing. We only want to materialize it when we are going to invoke the metadata linking postpass. Materializing it before function importing is not only unnecessary, but also causes metadata referenced by imported functions to be mapped in early, and then not connected to the rest of the module level metadata when it is ultimately linked in. Augmented the test case to specifically check for the metadata being properly connected, which it wasn't before this fix. llvm-svn: 257171
56 lines
2.9 KiB
LLVM
56 lines
2.9 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/funcimport_debug.ll -o %t2.bc
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; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
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; Do the import now and confirm that metadata is linked for imported function.
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; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -S | FileCheck %s
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; CHECK: define available_externally void @func()
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; Check that we have exactly two subprograms (that func's subprogram wasn't
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; linked more than once for example), and that they are connected to
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; the subprogram list on a compute unit.
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; CHECK: !{{[0-9]+}} = distinct !DICompileUnit({{.*}} subprograms: ![[SPs1:[0-9]+]]
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; CHECK: ![[SPs1]] = !{![[MAINSP:[0-9]+]]}
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; CHECK: ![[MAINSP]] = distinct !DISubprogram(name: "main"
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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: ![[SPs2]] = !{![[FUNCSP:[0-9]+]]}
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; CHECK: ![[FUNCSP]] = distinct !DISubprogram(name: "func"
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; CHECK-NOT: distinct !DISubprogram
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; ModuleID = 'funcimport_debug.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 uwtable
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define i32 @main() #0 !dbg !4 {
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entry:
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call void (...) @func(), !dbg !11
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ret i32 0, !dbg !12
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}
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declare void @func(...) #1
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attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 255685) (llvm/trunk 255682)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
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!1 = !DIFile(filename: "funcimport_debug.c", directory: ".")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, variables: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 3.8.0 (trunk 255685) (llvm/trunk 255682)"}
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!11 = !DILocation(line: 3, column: 3, scope: !4)
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!12 = !DILocation(line: 4, column: 1, scope: !4)
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