# Source: # unsigned char arr[0x100000]; # Compile with: # clang -O2 -gdwarf-3 -S 1.cpp -o 1.s --target=x86_64-pc-linux-gnu # RUN: llvm-mc -triple x86_64-pc-linux-gnu -o - -filetype obj < %s | \ # RUN: llvm-dwarfdump -debug-info - | FileCheck %s # CHECK: DW_AT_count (0x00100000) .text .file "1.cpp" .file 1 "/llvm-project" "1.cpp" .type arr,@object # @arr .bss .globl arr .p2align 4 arr: .zero 1048576 .size arr, 1048576 .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 14 # DW_FORM_strp .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 16 # DW_AT_stmt_list .byte 6 # DW_FORM_data4 .byte 27 # DW_AT_comp_dir .byte 14 # DW_FORM_strp .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 52 # DW_TAG_variable .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 63 # DW_AT_external .byte 12 # DW_FORM_flag .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 2 # DW_AT_location .byte 10 # DW_FORM_block1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 3 # Abbreviation Code .byte 1 # DW_TAG_array_type .byte 1 # DW_CHILDREN_yes .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 4 # Abbreviation Code .byte 33 # DW_TAG_subrange_type .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 55 # DW_AT_count .byte 6 # DW_FORM_data4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 5 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 62 # DW_AT_encoding .byte 11 # DW_FORM_data1 .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 6 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 62 # DW_AT_encoding .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_info,"",@progbits .Lcu_begin0: .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit .Ldebug_info_start0: .short 3 # DWARF version number .long .debug_abbrev # Offset Into Abbrev. Section .byte 8 # Address Size (in bytes) .byte 1 # Abbrev [1] 0xb:0x47 DW_TAG_compile_unit .long .Linfo_string0 # DW_AT_producer .short 33 # DW_AT_language .long .Linfo_string1 # DW_AT_name .long .Lline_table_start0 # DW_AT_stmt_list .long .Linfo_string2 # DW_AT_comp_dir .byte 2 # Abbrev [2] 0x1e:0x16 DW_TAG_variable .long .Linfo_string3 # DW_AT_name .long 52 # DW_AT_type .byte 1 # DW_AT_external .byte 1 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .byte 9 # DW_AT_location .byte 3 .quad arr .byte 3 # Abbrev [3] 0x34:0xf DW_TAG_array_type .long 67 # DW_AT_type .byte 4 # Abbrev [4] 0x39:0x9 DW_TAG_subrange_type .long 74 # DW_AT_type .long 1048576 # DW_AT_count .byte 0 # End Of Children Mark .byte 5 # Abbrev [5] 0x43:0x7 DW_TAG_base_type .long .Linfo_string4 # DW_AT_name .byte 8 # DW_AT_encoding .byte 1 # DW_AT_byte_size .byte 6 # Abbrev [6] 0x4a:0x7 DW_TAG_base_type .long .Linfo_string5 # DW_AT_name .byte 8 # DW_AT_byte_size .byte 7 # DW_AT_encoding .byte 0 # End Of Children Mark .Ldebug_info_end0: .section .debug_str,"MS",@progbits,1 .Linfo_string0: .asciz "clang version 13.0.0" # string offset=0 .Linfo_string1: .asciz "1.cpp" # string offset=21 .Linfo_string2: .asciz "/llvm-project" # string offset=27 .Linfo_string3: .asciz "arr" # string offset=61 .Linfo_string4: .asciz "unsigned char" # string offset=65 .Linfo_string5: .asciz "__ARRAY_SIZE_TYPE__" # string offset=79 .ident "clang version 13.0.0" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: