--- /dev/null
+# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o - | \
+# RUN: llvm-dwarfdump -debug-cu-index - | \
+# RUN: FileCheck %s
+
+# CHECK: .debug_cu_index contents:
+# CHECK-NEXT: version = 2 slots = 2
+# CHECK-EMPTY:
+# CHECK-NEXT: Index Signature INFO <unknown>
+# CHECK-NEXT: ----- ------------------ ------------------------ ------------------------
+# CHECK-NEXT: 1 0x1100001122222222 [0x00001000, 0x00001010) [0x00002000, 0x00002020)
+
+ .section .debug_cu_index, "", @progbits
+## Header:
+ .long 2 # Version
+ .long 2 # Section count
+ .long 1 # Unit count
+ .long 2 # Slot count
+## Hash Table of Signatures:
+ .quad 0x1100001122222222
+ .quad 0
+## Parallel Table of Indexes:
+ .long 1
+ .long 0
+## Table of Section Offsets:
+## Row 0:
+ .long 1 # DW_SECT_INFO
+ .long 9 # Invalid section identifier
+# Row 1:
+ .long 0x1000 # Offset in .debug_info.dwo
+ .long 0x2000
+## Table of Section Sizes:
+ .long 0x10 # Size in .debug_info.dwo
+ .long 0x20