# clang++ -g -gdwarf-4 -emit-llvm -S main.cpp
# llc -O0 -mtriple=x86_64-unknown-linux-gnu main.ll
# 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 1 "." "main.cpp"
.globl _Z3usePiS_ # -- Begin function _Z3usePiS_
.p2align 4, 0x90
.type _Z3usePiS_,@function
_Z3usePiS_: # @_Z3usePiS_
.Lfunc_begin0:
.loc 1 1 0 # main.cpp:1:0
.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 2 2 prologue_end # main.cpp:2:2
movq -8(%rbp), %rax
.loc 1 2 4 is_stmt 0 # main.cpp:2:4
movl (%rax), %ecx
addl $4, %ecx
movl %ecx, (%rax)
.loc 1 3 2 is_stmt 1 # main.cpp:3:2
movq -16(%rbp), %rax
.loc 1 3 4 is_stmt 0 # main.cpp:3:4
movl (%rax), %ecx
subl $2, %ecx
movl %ecx, (%rax)
.loc 1 4 1 is_stmt 1 # main.cpp:4:1
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 $16, %rsp
movl $0, -4(%rbp)
movl %edi, -8(%rbp)
movq %rsi, -16(%rbp)
.Ltmp2:
.loc 1 10 8 prologue_end # main.cpp:10:8
movl -8(%rbp), %eax
.loc 1 10 6 is_stmt 0 # main.cpp:10:6
movl %eax, x
.loc 1 11 8 is_stmt 1 # main.cpp:11:8
movl -8(%rbp), %eax
.loc 1 11 13 is_stmt 0 # main.cpp:11:13
addl $3, %eax
.loc 1 11 6 # main.cpp:11:6
movl %eax, y
.loc 1 12 4 is_stmt 1 # main.cpp:12:4
movabsq $x, %rdi
movabsq $y, %rsi
callq _Z3usePiS_
.loc 1 13 18 # main.cpp:13:18
movl x, %edi
.loc 1 13 21 is_stmt 0 # main.cpp:13:21
movl y, %esi
.loc 1 13 11 # main.cpp:13:11
callq _Z6helperii
.loc 1 13 4 # main.cpp:13:4
addq $16, %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 "\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
.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=2
.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=64
.Linfo_string11:
.asciz "main.dwo" # string offset=73
.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 64
.long 73
.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 1 # 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 1 # 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 1 # 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
.ident "clang version 15.0.0"
.section ".note.GNU-stack","",@progbits
.section .debug_line,"",@progbits
.Lline_table_start0:
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