1// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu < %s -o %t
2// RUN: llvm-objdump -s %t | FileCheck %s
3// RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck --check-prefix=INFO %s
4// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple i386-pc-linux-gnu < %s \
5// RUN:     | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS %s
6
7// REQUIRES: zlib
8
9// CHECK: Contents of section .zdebug_line:
10// Check for the 'ZLIB' file magic at the start of the section only
11// CHECK-NEXT: ZLIB
12// CHECK-NOT: ZLIB
13// CHECK: Contents of
14
15// Don't compress small sections, such as this simple debug_abbrev example
16// CHECK: Contents of section .debug_abbrev:
17// CHECK-NOT: ZLIB
18// CHECK-NOT: Contents of
19
20// CHECK: Contents of section .debug_info:
21
22// FIXME: Handle compressing alignment fragments to support compressing debug_frame
23// CHECK: Contents of section .debug_frame:
24// CHECK-NOT: ZLIB
25// CHECK: Contents of
26
27// Decompress one valid dwarf section just to check that this roundtrips
28// INFO: 0x00000000: Compile Unit: length = 0x0000000c version = 0x0004 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x00000010)
29
30// In x86 32 bit named symbols are used for temporary symbols in merge
31// sections, so make sure we handle symbols inside compressed sections
32// 386-SYMBOLS: Name: .Linfo_string0
33// 386-SYMBOLS-NOT: }
34// 386-SYMBOLS: Section: .zdebug_str
35
36	.section	.debug_line,"",@progbits
37
38	.section	.debug_abbrev,"",@progbits
39.Lsection_abbrev:
40	.byte	1                       # Abbreviation Code
41	.byte	17                      # DW_TAG_compile_unit
42	.byte	0                       # DW_CHILDREN_no
43	.byte	27                      # DW_AT_comp_dir
44	.byte	14                      # DW_FORM_strp
45	.byte	0                       # EOM(1)
46	.byte	0                       # EOM(2)
47
48	.section	.debug_info,"",@progbits
49	.long	12                      # Length of Unit
50	.short	4                       # DWARF version number
51	.long	.Lsection_abbrev        # Offset Into Abbrev. Section
52	.byte	8                       # Address Size (in bytes)
53	.byte	1                       # Abbrev [1] DW_TAG_compile_unit
54	.long	.Linfo_string0          # DW_AT_comp_dir
55
56	.text
57foo:
58	.cfi_startproc
59	.file 1 "Driver.ii"
60# pad out the line table to make sure it's big enough to warrant compression
61	.loc 1 2 0
62        nop
63	.loc 1 3 0
64        nop
65	.loc 1 4 0
66        nop
67	.loc 1 5 0
68        nop
69	.loc 1 6 0
70        nop
71	.loc 1 7 0
72        nop
73	.loc 1 8 0
74        nop
75	.cfi_endproc
76	.cfi_sections .debug_frame
77
78	.section        .debug_str,"MS",@progbits,1
79.Linfo_string0:
80        .asciz  "compress this                                    "
81