1# clang++ -g -gdwarf-5 -emit-llvm -S helper.cpp 2# llc -O0 -mtriple=x86_64-unknown-linux-gnu helper.ll 3# int z = 0; 4# int d = 0; 5# 6# int helper(int z_, int d_) { 7# z += z_; 8# d += d_; 9# return z * d; 10# } 11 12 .text 13 .file "helper.cpp" 14 .file 0 "." "helper.cpp" md5 0xe635924a35b65444173d0c76a54b866f 15 .globl _Z6helperii # -- Begin function _Z6helperii 16 .p2align 4, 0x90 17 .type _Z6helperii,@function 18_Z6helperii: # @_Z6helperii 19.Lfunc_begin0: 20 .loc 0 4 0 # helper.cpp:4:0 21 .cfi_startproc 22# %bb.0: # %entry 23 pushq %rbp 24 .cfi_def_cfa_offset 16 25 .cfi_offset %rbp, -16 26 movq %rsp, %rbp 27 .cfi_def_cfa_register %rbp 28 movl %edi, -4(%rbp) 29 movl %esi, -8(%rbp) 30.Ltmp0: 31 .loc 0 5 7 prologue_end # helper.cpp:5:7 32 movl -4(%rbp), %eax 33 .loc 0 5 4 is_stmt 0 # helper.cpp:5:4 34 addl z, %eax 35 movl %eax, z 36 .loc 0 6 7 is_stmt 1 # helper.cpp:6:7 37 movl -8(%rbp), %eax 38 .loc 0 6 4 is_stmt 0 # helper.cpp:6:4 39 addl d, %eax 40 movl %eax, d 41 .loc 0 7 9 is_stmt 1 # helper.cpp:7:9 42 movl z, %eax 43 .loc 0 7 11 is_stmt 0 # helper.cpp:7:11 44 imull d, %eax 45 .loc 0 7 2 # helper.cpp:7:2 46 popq %rbp 47 .cfi_def_cfa %rsp, 8 48 retq 49.Ltmp1: 50.Lfunc_end0: 51 .size _Z6helperii, .Lfunc_end0-_Z6helperii 52 .cfi_endproc 53 # -- End function 54 .type z,@object # @z 55 .bss 56 .globl z 57 .p2align 2 58z: 59 .long 0 # 0x0 60 .size z, 4 61 62 .type d,@object # @d 63 .globl d 64 .p2align 2 65d: 66 .long 0 # 0x0 67 .size d, 4 68 69 .section .debug_abbrev,"",@progbits 70 .byte 1 # Abbreviation Code 71 .byte 17 # DW_TAG_compile_unit 72 .byte 1 # DW_CHILDREN_yes 73 .byte 37 # DW_AT_producer 74 .byte 37 # DW_FORM_strx1 75 .byte 19 # DW_AT_language 76 .byte 5 # DW_FORM_data2 77 .byte 3 # DW_AT_name 78 .byte 37 # DW_FORM_strx1 79 .byte 114 # DW_AT_str_offsets_base 80 .byte 23 # DW_FORM_sec_offset 81 .byte 16 # DW_AT_stmt_list 82 .byte 23 # DW_FORM_sec_offset 83 .byte 27 # DW_AT_comp_dir 84 .byte 37 # DW_FORM_strx1 85 .byte 17 # DW_AT_low_pc 86 .byte 27 # DW_FORM_addrx 87 .byte 18 # DW_AT_high_pc 88 .byte 6 # DW_FORM_data4 89 .byte 115 # DW_AT_addr_base 90 .byte 23 # DW_FORM_sec_offset 91 .byte 0 # EOM(1) 92 .byte 0 # EOM(2) 93 .byte 2 # Abbreviation Code 94 .byte 52 # DW_TAG_variable 95 .byte 0 # DW_CHILDREN_no 96 .byte 3 # DW_AT_name 97 .byte 37 # DW_FORM_strx1 98 .byte 73 # DW_AT_type 99 .byte 19 # DW_FORM_ref4 100 .byte 63 # DW_AT_external 101 .byte 25 # DW_FORM_flag_present 102 .byte 58 # DW_AT_decl_file 103 .byte 11 # DW_FORM_data1 104 .byte 59 # DW_AT_decl_line 105 .byte 11 # DW_FORM_data1 106 .byte 2 # DW_AT_location 107 .byte 24 # DW_FORM_exprloc 108 .byte 0 # EOM(1) 109 .byte 0 # EOM(2) 110 .byte 3 # Abbreviation Code 111 .byte 36 # DW_TAG_base_type 112 .byte 0 # DW_CHILDREN_no 113 .byte 3 # DW_AT_name 114 .byte 37 # DW_FORM_strx1 115 .byte 62 # DW_AT_encoding 116 .byte 11 # DW_FORM_data1 117 .byte 11 # DW_AT_byte_size 118 .byte 11 # DW_FORM_data1 119 .byte 0 # EOM(1) 120 .byte 0 # EOM(2) 121 .byte 4 # Abbreviation Code 122 .byte 46 # DW_TAG_subprogram 123 .byte 1 # DW_CHILDREN_yes 124 .byte 17 # DW_AT_low_pc 125 .byte 27 # DW_FORM_addrx 126 .byte 18 # DW_AT_high_pc 127 .byte 6 # DW_FORM_data4 128 .byte 64 # DW_AT_frame_base 129 .byte 24 # DW_FORM_exprloc 130 .byte 110 # DW_AT_linkage_name 131 .byte 37 # DW_FORM_strx1 132 .byte 3 # DW_AT_name 133 .byte 37 # DW_FORM_strx1 134 .byte 58 # DW_AT_decl_file 135 .byte 11 # DW_FORM_data1 136 .byte 59 # DW_AT_decl_line 137 .byte 11 # DW_FORM_data1 138 .byte 73 # DW_AT_type 139 .byte 19 # DW_FORM_ref4 140 .byte 63 # DW_AT_external 141 .byte 25 # DW_FORM_flag_present 142 .byte 0 # EOM(1) 143 .byte 0 # EOM(2) 144 .byte 5 # Abbreviation Code 145 .byte 5 # DW_TAG_formal_parameter 146 .byte 0 # DW_CHILDREN_no 147 .byte 2 # DW_AT_location 148 .byte 24 # DW_FORM_exprloc 149 .byte 3 # DW_AT_name 150 .byte 37 # DW_FORM_strx1 151 .byte 58 # DW_AT_decl_file 152 .byte 11 # DW_FORM_data1 153 .byte 59 # DW_AT_decl_line 154 .byte 11 # DW_FORM_data1 155 .byte 73 # DW_AT_type 156 .byte 19 # DW_FORM_ref4 157 .byte 0 # EOM(1) 158 .byte 0 # EOM(2) 159 .byte 0 # EOM(3) 160 .section .debug_info,"",@progbits 161.Lcu_begin0: 162 .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit 163.Ldebug_info_start0: 164 .short 5 # DWARF version number 165 .byte 1 # DWARF Unit Type 166 .byte 8 # Address Size (in bytes) 167 .long .debug_abbrev # Offset Into Abbrev. Section 168 .byte 1 # Abbrev [1] 0xc:0x59 DW_TAG_compile_unit 169 .byte 0 # DW_AT_producer 170 .short 33 # DW_AT_language 171 .byte 1 # DW_AT_name 172 .long .Lstr_offsets_base0 # DW_AT_str_offsets_base 173 .long .Lline_table_start0 # DW_AT_stmt_list 174 .byte 2 # DW_AT_comp_dir 175 .byte 2 # DW_AT_low_pc 176 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 177 .long .Laddr_table_base0 # DW_AT_addr_base 178 .byte 2 # Abbrev [2] 0x23:0xb DW_TAG_variable 179 .byte 3 # DW_AT_name 180 .long 46 # DW_AT_type 181 # DW_AT_external 182 .byte 0 # DW_AT_decl_file 183 .byte 1 # DW_AT_decl_line 184 .byte 2 # DW_AT_location 185 .byte 161 186 .byte 0 187 .byte 3 # Abbrev [3] 0x2e:0x4 DW_TAG_base_type 188 .byte 4 # DW_AT_name 189 .byte 5 # DW_AT_encoding 190 .byte 4 # DW_AT_byte_size 191 .byte 2 # Abbrev [2] 0x32:0xb DW_TAG_variable 192 .byte 5 # DW_AT_name 193 .long 46 # DW_AT_type 194 # DW_AT_external 195 .byte 0 # DW_AT_decl_file 196 .byte 2 # DW_AT_decl_line 197 .byte 2 # DW_AT_location 198 .byte 161 199 .byte 1 200 .byte 4 # Abbrev [4] 0x3d:0x27 DW_TAG_subprogram 201 .byte 2 # DW_AT_low_pc 202 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 203 .byte 1 # DW_AT_frame_base 204 .byte 86 205 .byte 6 # DW_AT_linkage_name 206 .byte 7 # DW_AT_name 207 .byte 0 # DW_AT_decl_file 208 .byte 4 # DW_AT_decl_line 209 .long 46 # DW_AT_type 210 # DW_AT_external 211 .byte 5 # Abbrev [5] 0x4d:0xb DW_TAG_formal_parameter 212 .byte 2 # DW_AT_location 213 .byte 145 214 .byte 124 215 .byte 8 # DW_AT_name 216 .byte 0 # DW_AT_decl_file 217 .byte 4 # DW_AT_decl_line 218 .long 46 # DW_AT_type 219 .byte 5 # Abbrev [5] 0x58:0xb DW_TAG_formal_parameter 220 .byte 2 # DW_AT_location 221 .byte 145 222 .byte 120 223 .byte 9 # DW_AT_name 224 .byte 0 # DW_AT_decl_file 225 .byte 4 # DW_AT_decl_line 226 .long 46 # DW_AT_type 227 .byte 0 # End Of Children Mark 228 .byte 0 # End Of Children Mark 229.Ldebug_info_end0: 230 .section .debug_str_offsets,"",@progbits 231 .long 44 # Length of String Offsets Set 232 .short 5 233 .short 0 234.Lstr_offsets_base0: 235 .section .debug_str,"MS",@progbits,1 236.Linfo_string0: 237 .asciz "clang version 15.0.0" # string offset=0 238.Linfo_string1: 239 .asciz "helper.cpp" # string offset=21 240.Linfo_string2: 241 .asciz "." # string offset=32 242.Linfo_string3: 243 .asciz "z" # string offset=34 244.Linfo_string4: 245 .asciz "int" # string offset=36 246.Linfo_string5: 247 .asciz "d" # string offset=40 248.Linfo_string6: 249 .asciz "_Z6helperii" # string offset=42 250.Linfo_string7: 251 .asciz "helper" # string offset=54 252.Linfo_string8: 253 .asciz "z_" # string offset=61 254.Linfo_string9: 255 .asciz "d_" # string offset=64 256 .section .debug_str_offsets,"",@progbits 257 .long .Linfo_string0 258 .long .Linfo_string1 259 .long .Linfo_string2 260 .long .Linfo_string3 261 .long .Linfo_string4 262 .long .Linfo_string5 263 .long .Linfo_string6 264 .long .Linfo_string7 265 .long .Linfo_string8 266 .long .Linfo_string9 267 .section .debug_addr,"",@progbits 268 .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution 269.Ldebug_addr_start0: 270 .short 5 # DWARF version number 271 .byte 8 # Address size 272 .byte 0 # Segment selector size 273.Laddr_table_base0: 274 .quad z 275 .quad d 276 .quad .Lfunc_begin0 277.Ldebug_addr_end0: 278 .ident "clang version 15.0.0" 279 .section ".note.GNU-stack","",@progbits 280 .section .debug_line,"",@progbits 281.Lline_table_start0: 282