1 files changed, 143 insertions, 0 deletions
diff --git a/test/DebugInfo/Generic/cross-cu-inlining.ll b/test/DebugInfo/Generic/cross-cu-inlining.ll
new file mode 100644
index 0000000000000..d95b43400607c
--- /dev/null
+++ b/test/DebugInfo/Generic/cross-cu-inlining.ll
@@ -0,0 +1,143 @@
+; REQUIRES: object-emission
+
+; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=Enable < %s | llvm-dwarfdump -debug-dump=info - | FileCheck -implicit-check-not=DW_TAG %s
+; RUN: %llc_dwarf -dwarf-accel-tables=Enable -dwarf-linkage-names=Enable -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck --check-prefix=CHECK-ACCEL --check-prefix=CHECK %s
+
+; Build from source:
+; $ clang++ a.cpp b.cpp -g -c -emit-llvm
+; $ llvm-link a.bc b.bc -o ab.bc
+; $ opt -inline ab.bc -o ab-opt.bc
+; $ cat a.cpp
+; extern int i;
+; int func(int);
+; int main() {
+;   return func(i);
+; }
+; $ cat b.cpp
+; int __attribute__((always_inline)) func(int x) {
+;   return x * 2;
+; }
+
+; Ensure that func inlined into main is described and references the abstract
+; definition in b.cpp's CU.
+
+; CHECK: DW_TAG_compile_unit
+; CHECK:   DW_AT_name {{.*}} "a.cpp"
+; CHECK:   DW_TAG_subprogram
+; CHECK:     DW_AT_type [DW_FORM_ref_addr] (0x00000000[[INT:.*]])
+; CHECK:     0x[[INLINED:[0-9a-f]*]]:{{.*}}DW_TAG_inlined_subroutine
+; CHECK:       DW_AT_abstract_origin {{.*}}[[ABS_FUNC:........]] "_Z4funci"
+; CHECK:       DW_TAG_formal_parameter
+; CHECK:         DW_AT_abstract_origin {{.*}}[[ABS_VAR:........]] "x"
+
+; Check the abstract definition is in the 'b.cpp' CU and doesn't contain any
+; concrete information (address range or variable location)
+; CHECK: DW_TAG_compile_unit
+; CHECK:   DW_AT_name {{.*}} "b.cpp"
+; CHECK: 0x[[ABS_FUNC]]: DW_TAG_subprogram
+; CHECK-NOT: DW_AT_low_pc
+; CHECK: 0x[[ABS_VAR]]: DW_TAG_formal_parameter
+; CHECK-NOT: DW_AT_location
+; CHECK: DW_AT_type [DW_FORM_ref4] {{.*}} {0x[[INT]]}
+; CHECK-NOT: DW_AT_location
+
+; CHECK: 0x[[INT]]: DW_TAG_base_type
+; CHECK:   DW_AT_name {{.*}} "int"
+
+; Check the concrete out of line definition references the abstract and
+; provides the address range and variable location
+; CHECK: 0x[[FUNC:[0-9a-f]*]]{{.*}}DW_TAG_subprogram
+; CHECK:   DW_AT_low_pc
+; CHECK:   DW_AT_abstract_origin {{.*}} {0x[[ABS_FUNC]]} "_Z4funci"
+; CHECK:   DW_TAG_formal_parameter
+; CHECK:     DW_AT_location
+; CHECK:     DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]} "x"
+
+; Check that both the inline and the non out of line version of func are
+; correctly referenced in the accelerator table. Before r221837, the one
+; in the second compilation unit had a wrong offset
+; CHECK-ACCEL: .apple_names contents:
+; CHECK-ACCEL: Name{{.*}}"func"
+; CHECK-ACCEL-NOT: Name
+; CHECK-ACCEL: Atom[0]{{.*}}[[INLINED]]
+; CHECK-ACCEL-NOT: Name
+; CHECK-ACCEL: Atom[0]{{.*}}[[FUNC]]
+
+@i = external global i32
+
+; Function Attrs: uwtable
+define i32 @main() #0 !dbg !4 {
+entry:
+  %x.addr.i = alloca i32, align 4
+  %retval = alloca i32, align 4
+  store i32 0, i32* %retval
+  %0 = load i32, i32* @i, align 4, !dbg !19
+  %1 = bitcast i32* %x.addr.i to i8*
+  call void @llvm.lifetime.start(i64 4, i8* %1)
+  store i32 %0, i32* %x.addr.i, align 4
+  call void @llvm.dbg.declare(metadata i32* %x.addr.i, metadata !120, metadata !DIExpression()), !dbg !21
+  %2 = load i32, i32* %x.addr.i, align 4, !dbg !22
+  %mul.i = mul nsw i32 %2, 2, !dbg !22
+  %3 = bitcast i32* %x.addr.i to i8*, !dbg !22
+  call void @llvm.lifetime.end(i64 4, i8* %3), !dbg !22
+  ret i32 %mul.i, !dbg !19
+}
+
+; Function Attrs: alwaysinline nounwind uwtable
+define i32 @_Z4funci(i32 %x) #1 !dbg !12 {
+entry:
+  %x.addr = alloca i32, align 4
+  store i32 %x, i32* %x.addr, align 4
+  call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !20, metadata !DIExpression()), !dbg !23
+  %0 = load i32, i32* %x.addr, align 4, !dbg !24
+  %mul = mul nsw i32 %0, 2, !dbg !24
+  ret i32 %mul, !dbg !24
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
+
+; Function Attrs: nounwind
+declare void @llvm.lifetime.start(i64, i8* nocapture) #3
+
+; Function Attrs: nounwind
+declare void @llvm.lifetime.end(i64, i8* nocapture) #3
+
+attributes #0 = { uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { alwaysinline nounwind uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind readnone }
+attributes #3 = { nounwind }
+
+!llvm.dbg.cu = !{!0, !9}
+!llvm.module.flags = !{!16, !17}
+!llvm.ident = !{!18, !18}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
+!2 = !{}
+!3 = !{!4}
+!4 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2)
+!5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
+!6 = !DISubroutineType(types: !7)
+!7 = !{!8}
+!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !10, enums: !2, retainedTypes: !2, subprograms: !11, globals: !2, imports: !2)
+!10 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
+!11 = !{!12}
+!12 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !10, scope: !13, type: !14, variables: !2)
+!13 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
+!14 = !DISubroutineType(types: !15)
+!15 = !{!8, !8}
+!16 = !{i32 2, !"Dwarf Version", i32 4}
+!17 = !{i32 2, !"Debug Info Version", i32 3}
+!18 = !{!"clang version 3.5.0 "}
+!19 = !DILocation(line: 4, scope: !4)
+!20 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)
+
+!120 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)
+
+!21 = !DILocation(line: 1, scope: !12, inlinedAt: !19)
+!22 = !DILocation(line: 2, scope: !12, inlinedAt: !19)
+!23 = !DILocation(line: 1, scope: !12)
+!24 = !DILocation(line: 2, scope: !12)
+