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 57 foo: 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
