1 files changed, 50 insertions, 0 deletions
diff --git a/test/DebugInfo/cross-cu-scope.ll b/test/DebugInfo/cross-cu-scope.ll
new file mode 100644
index 000000000000..7c71f2769eb7
--- /dev/null
+++ b/test/DebugInfo/cross-cu-scope.ll
@@ -0,0 +1,50 @@
+; RUN: %llc_dwarf %s -filetype=obj -o %t
+; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
+
+; Reduced test case from PR35212. Two DISubprogram belong to a different CU but
+; share a scope. Both are declarations and end up in the scope's CU. We want to
+; check that the CU from the context DIE is used (rather than from the IR).
+; This manifests itself by the DW_base_type ending up in the second CU, rather
+; than in the first one as specified in the IR.
+
+; CHECK: DW_TAG_compile_unit
+; CHECK-NEXT: discriminator 0
+; CHECK: DW_TAG_compile_unit
+; CHECK-NEXT: discriminator 1
+; CHECK: DW_TAG_structure_type
+; CHECK-NOT: NULL
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: NULL
+; CHECK: DW_TAG_formal_parameter
+; CHECK-NOT: NULL
+; CHECK: DW_AT_type{{.*}}{[[USIZE_LABEL:0x[0-9a-f]+]]}
+; CHECK: NULL
+; CHECK: [[USIZE_LABEL]]: DW_TAG_base_type
+; CHECK-NOT: NULL
+; CHECK: DW_AT_name{{.*}}"usize"
+
+define hidden void @foo() !dbg !4 {
+  ret void, !dbg !7
+}
+
+!llvm.dbg.cu = !{!0, !2}
+!llvm.module.flags = !{!3}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_Rust, file: !1, producer: "clang LLVM (rustc version 1.23.0-nightly (discriminator 0))", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
+!1 = !DIFile(filename: "../lib.rs", directory: "/home/alex/code/rust4/lol")
+!2 = distinct !DICompileUnit(language: DW_LANG_Rust, file: !1, producer: "clang LLVM (rustc version 1.23.0-nightly (discriminator 1))", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
+!3 = !{i32 2, !"Debug Info Version", i32 3}
+!4 = distinct !DISubprogram(name: "clone<alloc::string::String>", linkageName: "_ZN5alloc3vec8{{impl}}28clone<alloc::string::String>E", scope: null, file: !1, line: 1519, type: !5, isLocal: false, isDefinition: true, scopeLine: 1519, flags: DIFlagPrototyped, isOptimized: true, unit: !0, templateParams: !6, variables: !6)
+!5 = !DISubroutineType(types: !6)
+!6 = !{}
+!7 = !DILocation(line: 1612, scope: !8, inlinedAt: !11)
+!8 = distinct !DILexicalBlock(scope: !9, file: !1, line: 86, column: 12)
+!9 = distinct !DISubprogram(name: "allocate_in<alloc::string::String,alloc::heap::Heap>", linkageName: "_ZN5alloc7raw_vec8{{impl}}52allocate_in<alloc::string::String,alloc::heap::Heap>E", scope: !10, file: !1, line: 82, type: !5, isLocal: false, isDefinition: true, scopeLine: 82, flags: DIFlagPrototyped, isOptimized: true, unit: !2, templateParams: !6, variables: !6)
+!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "RawVec<alloc::string::String, alloc::heap::Heap>", file: !1, size: 128, align: 64, elements: !6, identifier: "5c6e4db16d2c64555e40661d70c4d81e")
+!11 = distinct !DILocation(line: 86, scope: !8, inlinedAt: !12)
+!12 = distinct !DILocation(line: 141, scope: !13, inlinedAt: !17)
+!13 = distinct !DISubprogram(name: "with_capacity<alloc::string::String>", linkageName: "_ZN5alloc7raw_vec8{{impl}}36with_capacity<alloc::string::String>E", scope: !10, file: !1, line: 140, type: !5, isLocal: false, isDefinition: true, scopeLine: 140, flags: DIFlagPrototyped, isOptimized: true, unit: !0, templateParams: !6, variables: !14)
+!14 = !{!15}
+!15 = !DILocalVariable(name: "cap", arg: 1, scope: !13, file: !1, line: 1, type: !16)
+!16 = !DIBasicType(name: "usize", size: 64, encoding: DW_ATE_unsigned)
+!17 = !DILocation(line: 1521, scope: !4)