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