--- /dev/null
+# REQUIRES: object-emission,system-darwin
+# RUN: dsymutil -oso-prepend-path %p/.. %p/../Inputs/fat-test.arm.dylib -o %t.dSYM
+# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+# RUN: dsymutil -u %t.dSYM
+# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+# RUN: dsymutil -u %t.dSYM -o %t1.dSYM
+# RUN: llvm-dwarfdump -a -v %t1.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+
+CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(armv7): file format Mach-O arm
+
+CHECK: .debug_info contents:
+CHECK: Compile Unit: length = 0x00000034, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x04 (next unit at 0x00000038)
+CHECK: DW_TAG_compile_unit [1] *
+CHECK: DW_AT_producer [DW_FORM_strp] ( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
+CHECK: DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000024] = "fat-test.c")
+CHECK: DW_AT_stmt_list [DW_FORM_data4] (0x00000000)
+CHECK: DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x0000002f] = "/Inputs")
+CHECK: DW_TAG_variable [2]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000037] = "armv7_var")
+CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0030 => {0x00000030}
+CHECK: DW_AT_external [DW_FORM_flag] (0x01)
+CHECK: DW_AT_decl_file [DW_FORM_data1] ("/Inputs/fat-test.c")
+CHECK: DW_AT_decl_line [DW_FORM_data1] (23)
+CHECK: DW_AT_location [DW_FORM_block1] (DW_OP_addr 0x1000)
+CHECK: DW_TAG_base_type [3]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000041] = "int")
+CHECK: DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
+CHECK: DW_AT_byte_size [DW_FORM_data1] (0x04)
+CHECK: NULL
+
+
+CHECK: .debug_line contents:
+CHECK: Line table prologue:
+CHECK: total_length: 0x0000002a
+CHECK: version: 2
+CHECK: prologue_length: 0x00000021
+CHECK: min_inst_length: 1
+CHECK: default_is_stmt: 1
+CHECK: line_base: -5
+CHECK: line_range: 14
+CHECK: opcode_base: 13
+
+CHECK: .apple_names contents:
+CHECK: String: 0x00000037 "armv7_var"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x0000001e
+CHECK-NEXT: ]
+
+CHECK: .apple_types contents:
+CHECK: String: 0x00000041 "int"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x00000030
+CHECK-NEXT: Atom[1]: 0x0024
+CHECK-NEXT: Atom[2]: 0x00
+CHECK-NEXT: Atom[3]: 0x0c3a28a4
+CHECK-NEXT: ]
+
+CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(armv7s): file format Mach-O arm
+
+CHECK: .debug_info contents:
+CHECK: Compile Unit: length = 0x00000034, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x04 (next unit at 0x00000038)
+CHECK: DW_TAG_compile_unit [1] *
+CHECK: DW_AT_producer [DW_FORM_strp] ( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
+CHECK: DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000024] = "fat-test.c")
+CHECK: DW_AT_stmt_list [DW_FORM_data4] (0x00000000)
+CHECK: DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x0000002f] = "/Inputs")
+CHECK: DW_TAG_variable [2]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000037] = "armv7s_var")
+CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0030 => {0x00000030}
+CHECK: DW_AT_external [DW_FORM_flag] (0x01)
+CHECK: DW_AT_decl_file [DW_FORM_data1] ("/Inputs/fat-test.c")
+CHECK: DW_AT_decl_line [DW_FORM_data1] (21)
+CHECK: DW_AT_location [DW_FORM_block1] (DW_OP_addr 0x1000)
+CHECK: DW_TAG_base_type [3]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000042] = "int")
+CHECK: DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
+CHECK: DW_AT_byte_size [DW_FORM_data1] (0x04)
+CHECK: NULL
+
+CHECK: .debug_line contents:
+CHECK: Line table prologue:
+CHECK: total_length: 0x0000002a
+CHECK: version: 2
+CHECK: prologue_length: 0x00000021
+CHECK: min_inst_length: 1
+CHECK: default_is_stmt: 1
+CHECK: line_base: -5
+CHECK: line_range: 14
+CHECK: opcode_base: 13
+
+CHECK: .apple_names contents:
+CHECK: String: 0x00000037 "armv7s_var"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x0000001e
+CHECK-NEXT: ]
+
+CHECK: .apple_types contents:
+CHECK: String: 0x00000042 "int"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x00000030
+CHECK-NEXT: Atom[1]: 0x0024
+CHECK-NEXT: Atom[2]: 0x00
+CHECK-NEXT: Atom[3]: 0x0c3a28a4
+CHECK-NEXT: ]
+
+CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(arm64): file format Mach-O arm64
+
+CHECK: .debug_info contents:
+CHECK: Compile Unit: length = 0x00000038, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x0000003c)
+CHECK: DW_TAG_compile_unit [1] *
+CHECK: DW_AT_producer [DW_FORM_strp] ( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
+CHECK: DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000024] = "fat-test.c")
+CHECK: DW_AT_stmt_list [DW_FORM_data4] (0x00000000)
+CHECK: DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x0000002f] = "/Inputs")
+CHECK: DW_TAG_variable [2]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000037] = "arm64_var")
+CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0034 => {0x00000034}
+CHECK: DW_AT_external [DW_FORM_flag] (0x01)
+CHECK: DW_AT_decl_file [DW_FORM_data1] ("/Inputs/fat-test.c")
+CHECK: DW_AT_decl_line [DW_FORM_data1] (25)
+CHECK: DW_AT_location [DW_FORM_block1] (DW_OP_addr 0x4000)
+CHECK: DW_TAG_base_type [3]
+CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000041] = "int")
+CHECK: DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
+CHECK: DW_AT_byte_size [DW_FORM_data1] (0x04)
+CHECK: NULL
+
+CHECK: .debug_line contents:
+CHECK: Line table prologue:
+CHECK: total_length: 0x0000002a
+CHECK: version: 2
+CHECK: prologue_length: 0x00000021
+CHECK: min_inst_length: 1
+CHECK: default_is_stmt: 1
+CHECK: line_base: -5
+CHECK: line_range: 14
+CHECK: opcode_base: 13
+
+CHECK: .apple_names contents:
+CHECK: String: 0x00000037 "arm64_var"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x0000001e
+CHECK-NEXT: ]
+
+CHECK: .apple_types contents:
+CHECK: String: 0x00000041 "int"
+CHECK-NEXT: Data 0 [
+CHECK-NEXT: Atom[0]: 0x00000034
+CHECK-NEXT: Atom[1]: 0x0024
+CHECK-NEXT: Atom[2]: 0x00
+CHECK-NEXT: Atom[3]: 0x0c3a28a4
+CHECK-NEXT: ]