4 files changed, 101 insertions, 5 deletions
diff --git a/test/DebugInfo/X86/ref_addr_relocation.ll b/test/DebugInfo/X86/ref_addr_relocation.ll
new file mode 100644
index 0000000..3c1221f
--- /dev/null
+++ b/test/DebugInfo/X86/ref_addr_relocation.ll
@@ -0,0 +1,70 @@
+; RUN: llc -filetype=asm -O0 -mtriple=x86_64-linux-gnu < %s | FileCheck %s
+; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t
+; RUN: llvm-dwarfdump %t | FileCheck %s -check-prefix=CHECK-DWARF
+
+; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2
+; RUN: llvm-dwarfdump %t2 | FileCheck %s -check-prefix=DARWIN-DWARF
+
+; Testing case generated from:
+; clang++ tu1.cpp tu2.cpp -g -emit-llvm -c
+; llvm-link tu1.bc tu2.bc -o tu12.ll -S
+; cat hdr.h
+; struct foo {
+; };
+; cat tu1.cpp
+; #include "hdr.h"
+; foo f;
+; cat tu2.cpp
+; #include "hdr.h"
+; foo g;
+
+; Make sure we use relocation for ref_addr on non-darwin platforms.
+; CHECK: DW_TAG_compile_unit
+; CHECK: DW_TAG_variable
+; CHECK: .long [[TYPE:.*]] # DW_AT_type
+; CHECK: DW_TAG_structure_type
+; CHECK: debug_info_end0
+; CHECK: DW_TAG_compile_unit
+; CHECK-NOT: DW_TAG_structure_type
+; This variable's type is in the 1st CU.
+; CHECK: DW_TAG_variable
+; Make sure this is relocatable.
+; CHECK: .quad .Lsection_info+[[TYPE]] # DW_AT_type
+; CHECK-NOT: DW_TAG_structure_type
+; CHECK: debug_info_end1
+
+; CHECK-DWARF: DW_TAG_compile_unit
+; CHECK-DWARF: 0x[[ADDR:.*]]: DW_TAG_structure_type
+; CHECK-DWARF: DW_TAG_compile_unit
+; CHECK-DWARF: DW_TAG_variable
+; CHECK-DWARF: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ADDR]])
+
+; DARWIN-DWARF: DW_TAG_compile_unit
+; DARWIN-DWARF: 0x[[ADDR:.*]]: DW_TAG_structure_type
+; DARWIN-DWARF: DW_TAG_compile_unit
+; DARWIN-DWARF: DW_TAG_variable
+; DARWIN-DWARF: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ADDR]])
+
+%struct.foo = type { i8 }
+
+@f = global %struct.foo zeroinitializer, align 1
+@g = global %struct.foo zeroinitializer, align 1
+
+!llvm.dbg.cu = !{!0, !9}
+!llvm.module.flags = !{!14}
+
+!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 (trunk 191799)", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !2, metadata !6, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/Users/manmanren/test-Nov/type_unique_air/ref_addr/tu1.cpp] [DW_LANG_C_plus_plus]
+!1 = metadata !{metadata !"tu1.cpp", metadata !"/Users/manmanren/test-Nov/type_unique_air/ref_addr"}
+!2 = metadata !{i32 0}
+!3 = metadata !{metadata !4}
+!4 = metadata !{i32 786451, metadata !5, null, metadata !"foo", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !2, i32 0, null, null, metadata !"_ZTS3foo"} ; [ DW_TAG_structure_type ] [foo] [line 1, size 8, align 8, offset 0] [def] [from ]
+!5 = metadata !{metadata !"./hdr.h", metadata !"/Users/manmanren/test-Nov/type_unique_air/ref_addr"}
+!6 = metadata !{metadata !7}
+!7 = metadata !{i32 786484, i32 0, null, metadata !"f", metadata !"f", metadata !"", metadata !8, i32 2, metadata !4, i32 0, i32 1, %struct.foo* @f, null} ; [ DW_TAG_variable ] [f] [line 2] [def]
+!8 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [/Users/manmanren/test-Nov/type_unique_air/ref_addr/tu1.cpp]
+!9 = metadata !{i32 786449, metadata !10, i32 4, metadata !"clang version 3.4 (trunk 191799)", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !2, metadata !11, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/Users/manmanren/test-Nov/type_unique_air/ref_addr/tu2.cpp] [DW_LANG_C_plus_plus]
+!10 = metadata !{metadata !"tu2.cpp", metadata !"/Users/manmanren/test-Nov/type_unique_air/ref_addr"}
+!11 = metadata !{metadata !12}
+!12 = metadata !{i32 786484, i32 0, null, metadata !"g", metadata !"g", metadata !"", metadata !13, i32 2, metadata !4, i32 0, i32 1, %struct.foo* @g, null} ; [ DW_TAG_variable ] [g] [line 2] [def]
+!13 = metadata !{i32 786473, metadata !10}        ; [ DW_TAG_file_type ] [/Users/manmanren/test-Nov/type_unique_air/ref_addr/tu2.cpp]
+!14 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
diff --git a/test/Linker/Inputs/type-unique-simple2-a.ll b/test/Linker/Inputs/type-unique-simple2-a.ll
index 20cfd54..5058126 100644
--- a/test/Linker/Inputs/type-unique-simple2-a.ll
+++ b/test/Linker/Inputs/type-unique-simple2-a.ll
@@ -1,14 +1,18 @@
-; CHECK: 0x[[INT:.*]]: DW_TAG_base_type
-; CHECK-NEXT: DW_AT_name {{.*}} = "int"
-; CHECK-NOT: DW_TAG_base_type
+; Make sure the backend generates a single DIE and uses ref_addr.
 ; CHECK: 0x[[BASE:.*]]: DW_TAG_structure_type
 ; CHECK-NEXT: DW_AT_name {{.*}} = "Base"
 ; CHECK-NOT: DW_TAG_structure_type
+; CHECK: 0x[[INT:.*]]: DW_TAG_base_type
+; CHECK-NEXT: DW_AT_name {{.*}} = "int"
+; CHECK-NOT: DW_TAG_base_type
+
+; CHECK: DW_TAG_compile_unit
 ; CHECK: DW_TAG_formal_parameter
 ; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[INT]])
 ; CHECK: DW_TAG_variable
 ; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[BASE]])
 
+; Make sure llvm-link only generates a single copy of the struct.
 ; LINK: DW_TAG_structure_type
 ; LINK-NOT: DW_TAG_structure_type
 
diff --git a/test/Linker/type-unique-simple-a.ll b/test/Linker/type-unique-simple-a.ll
index c8f9462..808563f 100644
--- a/test/Linker/type-unique-simple-a.ll
+++ b/test/Linker/type-unique-simple-a.ll
@@ -1,7 +1,27 @@
-; RUN: llvm-link %s %p/type-unique-simple-b.ll -S -o - | FileCheck %s
+; REQUIRES: object-emission
 
-; CHECK: DW_TAG_structure_type
+; RUN: llvm-link %s %p/type-unique-simple-b.ll -S -o %t
+; RUN: cat %t | FileCheck %s -check-prefix=LINK
+; RUN: llc -filetype=obj -O0 < %t > %t2
+; RUN: llvm-dwarfdump -debug-dump=info %t2 | FileCheck %s
+
+; Make sure the backend generates a single DIE and uses ref_addr.
+; CHECK: 0x[[BASE:.*]]: DW_TAG_structure_type
+; CHECK-NEXT: DW_AT_name {{.*}} = "Base"
 ; CHECK-NOT: DW_TAG_structure_type
+; CHECK: 0x[[INT:.*]]: DW_TAG_base_type
+; CHECK-NEXT: DW_AT_name {{.*}} = "int"
+; CHECK-NOT: DW_TAG_base_type
+
+; CHECK: DW_TAG_compile_unit
+; CHECK: DW_TAG_formal_parameter
+; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[INT]])
+; CHECK: DW_TAG_variable
+; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[BASE]])
+
+; Make sure llvm-link only generates a single copy of the struct.
+; LINK: DW_TAG_structure_type
+; LINK-NOT: DW_TAG_structure_type
 ; Content of header files:
 ; struct Base {
 ;   int a;
diff --git a/test/Linker/type-unique-simple2.ll b/test/Linker/type-unique-simple2.ll
index 83e4715..ead91df 100644
--- a/test/Linker/type-unique-simple2.ll
+++ b/test/Linker/type-unique-simple2.ll
@@ -2,3 +2,5 @@
 
 ; RUN: llvm-link %S/Inputs/type-unique-simple2-a.ll %S/Inputs/type-unique-simple2-b.ll -S -o %t
 ; RUN: cat %t | FileCheck %S/Inputs/type-unique-simple2-a.ll -check-prefix=LINK
+; RUN: llc -filetype=obj -O0 < %t > %t2
+; RUN: llvm-dwarfdump -debug-dump=info %t2 | FileCheck %S/Inputs/type-unique-simple2-a.ll