# extern int helper(int i); # void use(int * x, int * y) { # *x += 4; # *y -= 2; # } # # int x = 0; # int y = 1; # int main(int argc, char *argv[]) { # x = argc; # y = argc + 3; # use(&x, &y); # return x + helper(y); # } .text .file "main.cpp" .file 1 "." "main.cpp" .globl _Z3usePiS_ # -- Begin function _Z3usePiS_ .p2align 4, 0x90 .type _Z3usePiS_,@function _Z3usePiS_: # @_Z3usePiS_ .Lfunc_begin0: .loc 1 2 0 # main.cpp:2:0 .cfi_startproc # %bb.0: # %entry pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset %rbp, -16 movq %rsp, %rbp .cfi_def_cfa_register %rbp movq %rdi, -8(%rbp) movq %rsi, -16(%rbp) .Ltmp0: .loc 1 3 3 prologue_end # main.cpp:3:3 movq -8(%rbp), %rax .loc 1 3 5 is_stmt 0 # main.cpp:3:5 movl (%rax), %ecx addl $4, %ecx movl %ecx, (%rax) .loc 1 4 3 is_stmt 1 # main.cpp:4:3 movq -16(%rbp), %rax .loc 1 4 5 is_stmt 0 # main.cpp:4:5 movl (%rax), %ecx subl $2, %ecx movl %ecx, (%rax) .loc 1 5 1 is_stmt 1 # main.cpp:5:1 popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp1: .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: .loc 1 9 0 # main.cpp:9:0 .cfi_startproc # %bb.0: # %entry pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset %rbp, -16 movq %rsp, %rbp .cfi_def_cfa_register %rbp subq $32, %rsp movl $0, -4(%rbp) movl %edi, -8(%rbp) movq %rsi, -16(%rbp) .Ltmp2: .loc 1 10 7 prologue_end # main.cpp:10:7 movl -8(%rbp), %eax .loc 1 10 5 is_stmt 0 # main.cpp:10:5 movl %eax, x .loc 1 11 7 is_stmt 1 # main.cpp:11:7 movl -8(%rbp), %eax .loc 1 11 12 is_stmt 0 # main.cpp:11:12 addl $3, %eax .loc 1 11 5 # main.cpp:11:5 movl %eax, y .loc 1 12 3 is_stmt 1 # main.cpp:12:3 movabsq $x, %rdi movabsq $y, %rsi callq _Z3usePiS_ .loc 1 13 10 # main.cpp:13:10 movl x, %eax movl %eax, -20(%rbp) # 4-byte Spill .loc 1 13 21 is_stmt 0 # main.cpp:13:21 movl y, %edi .loc 1 13 14 # main.cpp:13:14 callq _Z6helperi movl %eax, %ecx movl -20(%rbp), %eax # 4-byte Reload .loc 1 13 12 # main.cpp:13:12 addl %ecx, %eax .loc 1 13 3 # main.cpp:13:3 addq $32, %rsp popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp3: .Lfunc_end1: .size main, .Lfunc_end1-main .cfi_endproc # -- End function .type x,@object # @x .bss .globl x .p2align 2 x: .long 0 # 0x0 .size x, 4 .type y,@object # @y .data .globl y .p2align 2 y: .long 1 # 0x1 .size y, 4 .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 0 # DW_CHILDREN_no .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 14 # DW_FORM_strp .ascii "\264B" # DW_AT_GNU_pubnames .byte 25 # DW_FORM_flag_present .ascii "\260B" # DW_AT_GNU_dwo_name .byte 14 # DW_FORM_strp .ascii "\261B" # DW_AT_GNU_dwo_id .byte 7 # DW_FORM_data8 .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .ascii "\263B" # DW_AT_GNU_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 4 # DWARF version number .long .debug_abbrev # Offset Into Abbrev. Section .byte 8 # Address Size (in bytes) .byte 1 # Abbrev [1] 0xb:0x25 DW_TAG_compile_unit .long .Lline_table_start0 # DW_AT_stmt_list .long .Lskel_string0 # DW_AT_comp_dir # DW_AT_GNU_pubnames .long .Lskel_string1 # DW_AT_GNU_dwo_name .quad 4587139501222431648 # DW_AT_GNU_dwo_id .quad .Lfunc_begin0 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc .long .Laddr_table_base0 # DW_AT_GNU_addr_base .Ldebug_info_end0: .section .debug_str,"MS",@progbits,1 .Lskel_string0: .asciz "." # string offset=0 .Lskel_string1: .asciz "main.dwo" # string offset=38 .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 "_Z3usePiS_" # string offset=8 .Linfo_string4: .asciz "use" # string offset=19 .Linfo_string5: .asciz "main" # string offset=23 .Linfo_string6: .asciz "argc" # string offset=28 .Linfo_string7: .asciz "argv" # string offset=33 .Linfo_string8: .asciz "char" # string offset=38 .Linfo_string9: .asciz "clang version 15.0.0" # string offset=43 .Linfo_string10: .asciz "main.cpp" # string offset=177 .Linfo_string11: .asciz "main.dwo" # string offset=186 .section .debug_str_offsets.dwo,"e",@progbits .long 0 .long 2 .long 6 .long 8 .long 19 .long 23 .long 28 .long 33 .long 38 .long 43 .long 177 .long 186 .section .debug_info.dwo,"e",@progbits .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit .Ldebug_info_dwo_start0: .short 4 # DWARF version number .long 0 # Offset Into Abbrev. Section .byte 8 # Address Size (in bytes) .byte 1 # Abbrev [1] 0xb:0x85 DW_TAG_compile_unit .byte 9 # DW_AT_producer .short 33 # DW_AT_language .byte 10 # DW_AT_name .byte 11 # DW_AT_GNU_dwo_name .quad 4587139501222431648 # DW_AT_GNU_dwo_id .byte 2 # Abbrev [2] 0x19:0xb DW_TAG_variable .byte 0 # DW_AT_name .long 36 # DW_AT_type # DW_AT_external .byte 1 # DW_AT_decl_file .byte 7 # DW_AT_decl_line .byte 2 # DW_AT_location .byte 251 .byte 0 .byte 3 # Abbrev [3] 0x24:0x4 DW_TAG_base_type .byte 1 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 2 # Abbrev [2] 0x28:0xb DW_TAG_variable .byte 2 # DW_AT_name .long 36 # DW_AT_type # DW_AT_external .byte 1 # DW_AT_decl_file .byte 8 # DW_AT_decl_line .byte 2 # DW_AT_location .byte 251 .byte 1 .byte 4 # Abbrev [4] 0x33:0x23 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 86 .byte 3 # DW_AT_linkage_name .byte 4 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 2 # DW_AT_decl_line # DW_AT_external .byte 5 # Abbrev [5] 0x3f:0xb DW_TAG_formal_parameter .byte 2 # DW_AT_location .byte 145 .byte 120 .byte 0 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 124 # DW_AT_type .byte 5 # Abbrev [5] 0x4a:0xb DW_TAG_formal_parameter .byte 2 # DW_AT_location .byte 145 .byte 112 .byte 2 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 124 # DW_AT_type .byte 0 # End Of Children Mark .byte 6 # Abbrev [6] 0x56:0x26 DW_TAG_subprogram .byte 3 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 .byte 5 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 36 # DW_AT_type # DW_AT_external .byte 5 # Abbrev [5] 0x65:0xb DW_TAG_formal_parameter .byte 2 # DW_AT_location .byte 145 .byte 120 .byte 6 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 36 # DW_AT_type .byte 5 # Abbrev [5] 0x70:0xb DW_TAG_formal_parameter .byte 2 # DW_AT_location .byte 145 .byte 112 .byte 7 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 129 # DW_AT_type .byte 0 # End Of Children Mark .byte 7 # Abbrev [7] 0x7c:0x5 DW_TAG_pointer_type .long 36 # DW_AT_type .byte 7 # Abbrev [7] 0x81:0x5 DW_TAG_pointer_type .long 134 # DW_AT_type .byte 7 # Abbrev [7] 0x86:0x5 DW_TAG_pointer_type .long 139 # DW_AT_type .byte 3 # Abbrev [3] 0x8b:0x4 DW_TAG_base_type .byte 8 # 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 .ascii "\202>" # DW_FORM_GNU_str_index .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .ascii "\202>" # DW_FORM_GNU_str_index .ascii "\260B" # DW_AT_GNU_dwo_name .ascii "\202>" # DW_FORM_GNU_str_index .ascii "\261B" # DW_AT_GNU_dwo_id .byte 7 # DW_FORM_data8 .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 .ascii "\202>" # DW_FORM_GNU_str_index .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 .ascii "\202>" # DW_FORM_GNU_str_index .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 .ascii "\201>" # DW_FORM_GNU_addr_index .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 110 # DW_AT_linkage_name .ascii "\202>" # DW_FORM_GNU_str_index .byte 3 # DW_AT_name .ascii "\202>" # DW_FORM_GNU_str_index .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 .ascii "\202>" # DW_FORM_GNU_str_index .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 17 # DW_AT_low_pc .ascii "\201>" # DW_FORM_GNU_addr_index .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .ascii "\202>" # DW_FORM_GNU_str_index .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 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_addr,"",@progbits .Laddr_table_base0: .quad x .quad y .quad .Lfunc_begin0 .quad .Lfunc_begin1 .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 48 # Compilation Unit Length .long 86 # DIE offset .byte 48 # Attributes: FUNCTION, EXTERNAL .asciz "main" # External Name .long 25 # DIE offset .byte 32 # Attributes: VARIABLE, EXTERNAL .asciz "x" # External Name .long 40 # DIE offset .byte 32 # Attributes: VARIABLE, EXTERNAL .asciz "y" # External Name .long 51 # DIE offset .byte 48 # Attributes: FUNCTION, EXTERNAL .asciz "use" # 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 48 # Compilation Unit Length .long 36 # DIE offset .byte 144 # Attributes: TYPE, STATIC .asciz "int" # External Name .long 139 # DIE offset .byte 144 # Attributes: TYPE, STATIC .asciz "char" # External Name .long 0 # End Mark .LpubTypes_end0: .ident "clang version 15.0.0" .section ".note.GNU-stack","",@progbits .addrsig .addrsig_sym _Z3usePiS_ .addrsig_sym _Z6helperi .addrsig_sym x .addrsig_sym y .section .debug_line,"",@progbits .Lline_table_start0: