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