# clang++ -O2 -g -gdwarf-4 -gsplit-dwarf # void use(int * x, int * y) { # *x += 4; # *y -= 2; # } # # int helper(int z_, int d_); # int x = 0; # int y = 1; # int main(int argc, char *argv[]) { # x = argc; # y = argc + 3; # //use(&x, &y); # return helper(x, y); # } .text .file "main.cpp" .file 0 "." "main.cpp" md5 0x1a68208241c6577e68c7b707538826da .globl _Z3usePiS_ # -- Begin function _Z3usePiS_ .p2align 4, 0x90 .type _Z3usePiS_,@function _Z3usePiS_: # @_Z3usePiS_ .Lfunc_begin0: .cfi_startproc # %bb.0: # %entry #DEBUG_VALUE: use:x <- $rdi #DEBUG_VALUE: use:y <- $rsi .loc 0 2 5 prologue_end # main.cpp:2:5 addl $4, (%rdi) .loc 0 3 5 # main.cpp:3:5 addl $-2, (%rsi) .loc 0 4 1 # main.cpp:4:1 retq .Ltmp0: .Lfunc_end0: .size _Z3usePiS_, .Lfunc_end0-_Z3usePiS_ .cfi_endproc # -- End function .globl main # -- Begin function main .p2align 4, 0x90 .type main,@function main: # @main .Lfunc_begin1: .cfi_startproc # %bb.0: # %entry #DEBUG_VALUE: main:argc <- $edi #DEBUG_VALUE: main:argv <- $rsi # kill: def $edi killed $edi def $rdi .loc 0 10 6 prologue_end # main.cpp:10:6 movl %edi, x(%rip) .loc 0 11 13 # main.cpp:11:13 leal 3(%rdi), %esi .Ltmp1: #DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi .loc 0 11 6 is_stmt 0 # main.cpp:11:6 movl %esi, y(%rip) # kill: def $edi killed $edi killed $rdi .Ltmp2: .loc 0 13 11 is_stmt 1 # main.cpp:13:11 jmp _Z6helperii@PLT # TAILCALL .Ltmp3: .Lfunc_end1: .size main, .Lfunc_end1-main .cfi_endproc # -- End function .type x,@object # @x .bss .globl x .p2align 2, 0x0 x: .long 0 # 0x0 .size x, 4 .type y,@object # @y .data .globl y .p2align 2, 0x0 y: .long 1 # 0x1 .size y, 4 .section .debug_loclists.dwo,"e",@progbits .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length .Ldebug_list_header_start0: .short 5 # Version .byte 8 # Address size .byte 0 # Segment selector size .long 1 # Offset entry count .Lloclists_table_base0: .long .Ldebug_loc0-.Lloclists_table_base0 .Ldebug_loc0: .byte 1 # DW_LLE_base_addressx .byte 2 # base address index .byte 4 # DW_LLE_offset_pair .uleb128 .Lfunc_begin1-.Lfunc_begin0 # starting offset .uleb128 .Ltmp1-.Lfunc_begin0 # ending offset .byte 1 # Loc expr size .byte 84 # DW_OP_reg4 .byte 4 # DW_LLE_offset_pair .uleb128 .Ltmp1-.Lfunc_begin0 # starting offset .uleb128 .Lfunc_end1-.Lfunc_begin0 # ending offset .byte 4 # Loc expr size .byte 163 # DW_OP_entry_value .byte 1 # 1 .byte 84 # DW_OP_reg4 .byte 159 # DW_OP_stack_value .byte 0 # DW_LLE_end_of_list .Ldebug_list_header_end0: .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 74 # DW_TAG_skeleton_unit .byte 0 # DW_CHILDREN_no .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 114 # DW_AT_str_offsets_base .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 37 # DW_FORM_strx1 .ascii "\264B" # DW_AT_GNU_pubnames .byte 25 # DW_FORM_flag_present .byte 118 # DW_AT_dwo_name .byte 37 # DW_FORM_strx1 .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 115 # DW_AT_addr_base .byte 23 # DW_FORM_sec_offset .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 5 # DWARF version number .byte 4 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long .debug_abbrev # Offset Into Abbrev. Section .quad 1538385283627936656 .byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit .long .Lline_table_start0 # DW_AT_stmt_list .long .Lstr_offsets_base0 # DW_AT_str_offsets_base .byte 0 # DW_AT_comp_dir # DW_AT_GNU_pubnames .byte 1 # DW_AT_dwo_name .byte 2 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc .long .Laddr_table_base0 # DW_AT_addr_base .Ldebug_info_end0: .section .debug_str_offsets,"",@progbits .long 12 # Length of String Offsets Set .short 5 .short 0 .Lstr_offsets_base0: .section .debug_str,"MS",@progbits,1 .Lskel_string0: .asciz "." # string offset=0 .Lskel_string1: .asciz "main.dwo" # string offset=47 .section .debug_str_offsets,"",@progbits .long .Lskel_string0 .long .Lskel_string1 .section .debug_str_offsets.dwo,"e",@progbits .long 60 # Length of String Offsets Set .short 5 .short 0 .section .debug_str.dwo,"eMS",@progbits,1 .Linfo_string0: .asciz "x" # string offset=0 .Linfo_string1: .asciz "int" # string offset=2 .Linfo_string2: .asciz "y" # string offset=6 .Linfo_string3: .asciz "_Z6helperii" # string offset=8 .Linfo_string4: .asciz "helper" # string offset=20 .Linfo_string5: .asciz "_Z3usePiS_" # string offset=27 .Linfo_string6: .asciz "use" # string offset=38 .Linfo_string7: .asciz "main" # string offset=42 .Linfo_string8: .asciz "argc" # string offset=47 .Linfo_string9: .asciz "argv" # string offset=52 .Linfo_string10: .asciz "char" # string offset=57 .Linfo_string11: .asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" # string offset=62 .Linfo_string12: .asciz "main.cpp" # string offset=163 .Linfo_string13: .asciz "main.dwo" # string offset=172 .section .debug_str_offsets.dwo,"e",@progbits .long 0 .long 2 .long 6 .long 8 .long 20 .long 27 .long 38 .long 42 .long 47 .long 52 .long 57 .long 62 .long 163 .long 172 .section .debug_info.dwo,"e",@progbits .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit .Ldebug_info_dwo_start0: .short 5 # DWARF version number .byte 5 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long 0 # Offset Into Abbrev. Section .quad 1538385283627936656 .byte 1 # Abbrev [1] 0x14:0x8e DW_TAG_compile_unit .byte 11 # DW_AT_producer .short 33 # DW_AT_language .byte 12 # DW_AT_name .byte 13 # DW_AT_dwo_name .byte 2 # Abbrev [2] 0x1a:0xb DW_TAG_variable .byte 0 # DW_AT_name .long 37 # DW_AT_type # DW_AT_external .byte 0 # DW_AT_decl_file .byte 7 # DW_AT_decl_line .byte 2 # DW_AT_location .byte 161 .byte 0 .byte 3 # Abbrev [3] 0x25:0x4 DW_TAG_base_type .byte 1 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 2 # Abbrev [2] 0x29:0xb DW_TAG_variable .byte 2 # DW_AT_name .long 37 # DW_AT_type # DW_AT_external .byte 0 # DW_AT_decl_file .byte 8 # DW_AT_decl_line .byte 2 # DW_AT_location .byte 161 .byte 1 .byte 4 # Abbrev [4] 0x34:0x21 DW_TAG_subprogram .byte 2 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 87 # DW_AT_call_all_calls .byte 5 # DW_AT_linkage_name .byte 6 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 1 # DW_AT_decl_line # DW_AT_external .byte 5 # Abbrev [5] 0x40:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 85 .byte 0 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .long 142 # DW_AT_type .byte 5 # Abbrev [5] 0x4a:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 84 .byte 2 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .long 142 # DW_AT_type .byte 0 # End Of Children Mark .byte 6 # Abbrev [6] 0x55:0x25 DW_TAG_subprogram .byte 0 # DW_AT_ranges .byte 1 # DW_AT_frame_base .byte 87 # DW_AT_call_all_calls .byte 7 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 37 # DW_AT_type # DW_AT_external .byte 5 # Abbrev [5] 0x60:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 85 .byte 8 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 37 # DW_AT_type .byte 7 # Abbrev [7] 0x6a:0x9 DW_TAG_formal_parameter .byte 0 # DW_AT_location .byte 9 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 147 # DW_AT_type .byte 8 # Abbrev [8] 0x73:0x6 DW_TAG_call_site .long 122 # DW_AT_call_origin # DW_AT_call_tail_call .byte 3 # DW_AT_call_pc .byte 0 # End Of Children Mark .byte 9 # Abbrev [9] 0x7a:0x14 DW_TAG_subprogram .byte 3 # DW_AT_linkage_name .byte 4 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 6 # DW_AT_decl_line .long 37 # DW_AT_type # DW_AT_declaration # DW_AT_external .byte 10 # Abbrev [10] 0x83:0x5 DW_TAG_formal_parameter .long 37 # DW_AT_type .byte 10 # Abbrev [10] 0x88:0x5 DW_TAG_formal_parameter .long 37 # DW_AT_type .byte 0 # End Of Children Mark .byte 11 # Abbrev [11] 0x8e:0x5 DW_TAG_pointer_type .long 37 # DW_AT_type .byte 11 # Abbrev [11] 0x93:0x5 DW_TAG_pointer_type .long 152 # DW_AT_type .byte 11 # Abbrev [11] 0x98:0x5 DW_TAG_pointer_type .long 157 # DW_AT_type .byte 3 # Abbrev [3] 0x9d:0x4 DW_TAG_base_type .byte 10 # DW_AT_name .byte 6 # DW_AT_encoding .byte 1 # DW_AT_byte_size .byte 0 # End Of Children Mark .Ldebug_info_dwo_end0: .section .debug_abbrev.dwo,"e",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 37 # DW_FORM_strx1 .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 118 # DW_AT_dwo_name .byte 37 # DW_FORM_strx1 .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 37 # DW_FORM_strx1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .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 24 # DW_FORM_exprloc .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 3 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .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 4 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 122 # DW_AT_call_all_calls .byte 25 # DW_FORM_flag_present .byte 110 # DW_AT_linkage_name .byte 37 # DW_FORM_strx1 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 5 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 6 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 85 # DW_AT_ranges .byte 35 # DW_FORM_rnglistx .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 122 # DW_AT_call_all_calls .byte 25 # DW_FORM_flag_present .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 7 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 34 # DW_FORM_loclistx .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 8 # Abbreviation Code .byte 72 # DW_TAG_call_site .byte 0 # DW_CHILDREN_no .byte 127 # DW_AT_call_origin .byte 19 # DW_FORM_ref4 .ascii "\202\001" # DW_AT_call_tail_call .byte 25 # DW_FORM_flag_present .ascii "\201\001" # DW_AT_call_pc .byte 27 # DW_FORM_addrx .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 9 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 110 # DW_AT_linkage_name .byte 37 # DW_FORM_strx1 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 60 # DW_AT_declaration .byte 25 # DW_FORM_flag_present .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 10 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 11 # Abbreviation Code .byte 15 # DW_TAG_pointer_type .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_rnglists.dwo,"e",@progbits .long .Ldebug_list_header_end1-.Ldebug_list_header_start1 # Length .Ldebug_list_header_start1: .short 5 # Version .byte 8 # Address size .byte 0 # Segment selector size .long 1 # Offset entry count .Lrnglists_dwo_table_base0: .long .Ldebug_ranges0-.Lrnglists_dwo_table_base0 .Ldebug_ranges0: .byte 4 # DW_RLE_offset_pair .uleb128 .Lfunc_begin1-.Lfunc_begin0 # starting offset .uleb128 .Lfunc_end1-.Lfunc_begin0 # ending offset .byte 0 # DW_RLE_end_of_list .Ldebug_list_header_end1: .section .debug_addr,"",@progbits .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution .Ldebug_addr_start0: .short 5 # DWARF version number .byte 8 # Address size .byte 0 # Segment selector size .Laddr_table_base0: .quad x .quad y .quad .Lfunc_begin0 .quad .Ltmp2 .Ldebug_addr_end0: .section .debug_gnu_pubnames,"",@progbits .long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info .LpubNames_start0: .short 2 # DWARF Version .long .Lcu_begin0 # Offset of Compilation Unit Info .long 40 # Compilation Unit Length .long 26 # DIE offset .byte 32 # Attributes: VARIABLE, EXTERNAL .asciz "x" # External Name .long 41 # DIE offset .byte 32 # Attributes: VARIABLE, EXTERNAL .asciz "y" # External Name .long 52 # DIE offset .byte 48 # Attributes: FUNCTION, EXTERNAL .asciz "use" # External Name .long 85 # DIE offset .byte 48 # Attributes: FUNCTION, EXTERNAL .asciz "main" # External Name .long 0 # End Mark .LpubNames_end0: .section .debug_gnu_pubtypes,"",@progbits .long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info .LpubTypes_start0: .short 2 # DWARF Version .long .Lcu_begin0 # Offset of Compilation Unit Info .long 40 # Compilation Unit Length .long 37 # DIE offset .byte 144 # Attributes: TYPE, STATIC .asciz "int" # External Name .long 157 # DIE offset .byte 144 # Attributes: TYPE, STATIC .asciz "char" # External Name .long 0 # End Mark .LpubTypes_end0: .ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: