2 files changed, 109 insertions, 0 deletions
diff --git a/llvm/test/Linker/Inputs/thinlto_funcimport_debug.ll b/llvm/test/Linker/Inputs/thinlto_funcimport_debug.ll
new file mode 100644
index 00000000000..846a5ea001d
--- /dev/null
+++ b/llvm/test/Linker/Inputs/thinlto_funcimport_debug.ll
@@ -0,0 +1,38 @@
+; ModuleID = 'dbg_main.o'
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind uwtable
+define i32 @main() #0 !dbg !4 {
+entry:
+  %call = tail call i32 @func1(i32 10) #2, !dbg !11
+  %call1 = tail call i32 @func2(i32 10) #2, !dbg !12
+  ret i32 0, !dbg !13
+}
+
+declare i32 @func1(i32) #1
+
+declare i32 @func2(i32) #1
+
+attributes #0 = { nounwind 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" }
+attributes #1 = { "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" }
+attributes #2 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!8, !9}
+!llvm.ident = !{!10}
+
+!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)
+!1 = !DIFile(filename: "dbg_main.c", directory: ".")
+!2 = !{}
+!3 = !{!4}
+!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, variables: !2)
+!5 = !DISubroutineType(types: !6)
+!6 = !{!7}
+!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !{i32 2, !"Dwarf Version", i32 4}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
+!11 = !DILocation(line: 4, column: 3, scope: !4)
+!12 = !DILocation(line: 5, column: 3, scope: !4)
+!13 = !DILocation(line: 6, column: 1, scope: !4)
diff --git a/llvm/test/Linker/thinlto_funcimport_debug.ll b/llvm/test/Linker/thinlto_funcimport_debug.ll
new file mode 100644
index 00000000000..6c33caacf9e
--- /dev/null
+++ b/llvm/test/Linker/thinlto_funcimport_debug.ll
@@ -0,0 +1,71 @@
+; Do setup work for all below tests: generate bitcode and combined index
+; RUN: llvm-as -function-summary %s -o %t.bc
+; RUN: llvm-as -function-summary %p/Inputs/thinlto_funcimport_debug.ll -o %t2.bc
+; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
+
+; Confirm that we link the metadata for the imported module.
+; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=func1:%t.bc -S | FileCheck %s
+
+; CHECK: declare i32 @func2
+; CHECK: define available_externally i32 @func1
+; CHECK: distinct !DISubprogram(name: "func1"
+; CHECK: distinct !DISubprogram(name: "func2"
+
+; ModuleID = 'dbg.o'
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind readnone uwtable
+define i32 @func1(i32 %n) #0 !dbg !4 {
+entry:
+  tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !9, metadata !17), !dbg !18
+  tail call void @llvm.dbg.value(metadata i32 5, i64 0, metadata !10, metadata !17), !dbg !19
+  %cmp = icmp sgt i32 %n, 10, !dbg !20
+  %. = select i1 %cmp, i32 10, i32 5, !dbg !22
+  tail call void @llvm.dbg.value(metadata i32 %., i64 0, metadata !10, metadata !17), !dbg !19
+  ret i32 %., !dbg !23
+}
+
+; Function Attrs: nounwind readnone uwtable
+define i32 @func2(i32 %n) #0 !dbg !11 {
+entry:
+  tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !13, metadata !17), !dbg !24
+  ret i32 %n, !dbg !25
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+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" }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!14, !15}
+!llvm.ident = !{!16}
+
+!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)
+!1 = !DIFile(filename: "dbg.c", directory: ".")
+!2 = !{}
+!3 = !{!4, !11}
+!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)
+!5 = !DISubroutineType(types: !6)
+!6 = !{!7, !7}
+!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !{!9, !10}
+!9 = !DILocalVariable(name: "n", arg: 1, scope: !4, file: !1, line: 1, type: !7)
+!10 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 2, type: !7)
+!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)
+!12 = !{!13}
+!13 = !DILocalVariable(name: "n", arg: 1, scope: !11, file: !1, line: 8, type: !7)
+!14 = !{i32 2, !"Dwarf Version", i32 4}
+!15 = !{i32 2, !"Debug Info Version", i32 3}
+!16 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
+!17 = !DIExpression()
+!18 = !DILocation(line: 1, column: 15, scope: !4)
+!19 = !DILocation(line: 2, column: 7, scope: !4)
+!20 = !DILocation(line: 3, column: 9, scope: !21)
+!21 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 7)
+!22 = !DILocation(line: 3, column: 7, scope: !4)
+!23 = !DILocation(line: 5, column: 3, scope: !4)
+!24 = !DILocation(line: 8, column: 15, scope: !11)
+!25 = !DILocation(line: 9, column: 3, scope: !11)