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1# REQUIRES: system-linux2 3# RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %s -o %tmain.o4# RUN: %clang %cflags -dwarf-4 %tmain.o -o %t.exe -Wl,-q5# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections --use-old-text6# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt > %t.txt7# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe >> %t.txt8# RUN: cat %t.txt | FileCheck --check-prefix=CHECK %s9 10# CHECK: DW_TAG_inlined_subroutine11# CHECK: DW_AT_low_pc [DW_FORM_addr] (0x[[#%.16x,ADDR:]])12# CHECK: DW_AT_high_pc [DW_FORM_data4] (0x00000000)13 14# CHECK: DW_TAG_inlined_subroutine15# CHECK-NOT: DW_AT_low_pc [DW_FORM_addr] (0x[[#ADDR]])16# CHECK: DW_AT_high_pc [DW_FORM_data4] (0x00000000)17 18 19## Testing BOLT handles correctly when size of DW_AT_inlined_subroutine is 0.20## In other words DW_AT_high_pc is 0 or DW_AT_low_pc == DW_AT_high_pc.21 22# Modified assembly manually to set DW_AT_high_pc to 0.23# clang++ -g2 -gdwarf-4 main.cpp -O1 -S -o main4.s24 25# static int helper(int i) {26# return ++i;27# }28# void may_not_exist(void) __attribute__ ((weak));29# int main(int argc, char *argv[]) {30# if (may_not_exist)31# may_not_exist();32# int j = 0;33# [[clang::always_inline]] j = helper(argc);34# return j;35# }36 37 38 .text39 .file "main.cpp"40 .globl main # -- Begin function main41 .p2align 4, 0x9042 .type main,@function43main: # @main44.Lfunc_begin0:45 .file 1 "." "main.cpp"46 .loc 1 5 0 # main.cpp:5:047 .cfi_startproc48# %bb.0: # %entry49 #DEBUG_VALUE: main:argc <- $edi50 #DEBUG_VALUE: main:argv <- $rsi51 pushq %rbx52 .cfi_def_cfa_offset 1653 .cfi_offset %rbx, -1654 movl %edi, %ebx55.Ltmp0:56 .loc 1 6 7 prologue_end # main.cpp:6:757 cmpq $0, _Z13may_not_existv@GOTPCREL(%rip)58 je .LBB0_259.Ltmp1:60# %bb.1: # %if.then61 #DEBUG_VALUE: main:argc <- $ebx62 #DEBUG_VALUE: main:argv <- $rsi63 .loc 1 7 5 # main.cpp:7:564 callq _Z13may_not_existv@PLT65.Ltmp2:66 #DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi67.LBB0_2: # %if.end68 #DEBUG_VALUE: main:argc <- $ebx69 #DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi70 #DEBUG_VALUE: main:j <- 071 #DEBUG_VALUE: helper:i <- $ebx72 .loc 1 2 10 # main.cpp:2:1073 incl %ebx74.Ltmp3:75 #DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi76 #DEBUG_VALUE: helper:i <- $ebx77 #DEBUG_VALUE: main:j <- $ebx78 .loc 1 10 3 # main.cpp:10:379 movl %ebx, %eax80 popq %rbx81.Ltmp4:82 #DEBUG_VALUE: helper:i <- $eax83 #DEBUG_VALUE: main:j <- $eax84 .cfi_def_cfa_offset 885 retq86.Ltmp5:87.Lfunc_end0:88 .size main, .Lfunc_end0-main89 .cfi_endproc90 # -- End function91 .section .debug_loc,"",@progbits92.Ldebug_loc0:93 .quad .Lfunc_begin0-.Lfunc_begin094 .quad .Ltmp1-.Lfunc_begin095 .short 1 # Loc expr size96 .byte 85 # super-register DW_OP_reg597 .quad .Ltmp1-.Lfunc_begin098 .quad .Ltmp3-.Lfunc_begin099 .short 1 # Loc expr size100 .byte 83 # super-register DW_OP_reg3101 .quad .Ltmp3-.Lfunc_begin0102 .quad .Lfunc_end0-.Lfunc_begin0103 .short 4 # Loc expr size104 .byte 243 # DW_OP_GNU_entry_value105 .byte 1 # 1106 .byte 85 # super-register DW_OP_reg5107 .byte 159 # DW_OP_stack_value108 .quad 0109 .quad 0110.Ldebug_loc1:111 .quad .Lfunc_begin0-.Lfunc_begin0112 .quad .Ltmp2-.Lfunc_begin0113 .short 1 # Loc expr size114 .byte 84 # DW_OP_reg4115 .quad .Ltmp2-.Lfunc_begin0116 .quad .Lfunc_end0-.Lfunc_begin0117 .short 4 # Loc expr size118 .byte 243 # DW_OP_GNU_entry_value119 .byte 1 # 1120 .byte 84 # DW_OP_reg4121 .byte 159 # DW_OP_stack_value122 .quad 0123 .quad 0124.Ldebug_loc2:125 .quad .Ltmp2-.Lfunc_begin0126 .quad .Ltmp3-.Lfunc_begin0127 .short 3 # Loc expr size128 .byte 17 # DW_OP_consts129 .byte 0 # 0130 .byte 159 # DW_OP_stack_value131 .quad .Ltmp3-.Lfunc_begin0132 .quad .Ltmp4-.Lfunc_begin0133 .short 1 # Loc expr size134 .byte 83 # super-register DW_OP_reg3135 .quad .Ltmp4-.Lfunc_begin0136 .quad .Lfunc_end0-.Lfunc_begin0137 .short 1 # Loc expr size138 .byte 80 # super-register DW_OP_reg0139 .quad 0140 .quad 0141 .section .debug_abbrev,"",@progbits142 .byte 1 # Abbreviation Code143 .byte 17 # DW_TAG_compile_unit144 .byte 1 # DW_CHILDREN_yes145 .byte 37 # DW_AT_producer146 .byte 14 # DW_FORM_strp147 .byte 19 # DW_AT_language148 .byte 5 # DW_FORM_data2149 .byte 3 # DW_AT_name150 .byte 14 # DW_FORM_strp151 .byte 16 # DW_AT_stmt_list152 .byte 23 # DW_FORM_sec_offset153 .byte 27 # DW_AT_comp_dir154 .byte 14 # DW_FORM_strp155 .byte 17 # DW_AT_low_pc156 .byte 1 # DW_FORM_addr157 .byte 18 # DW_AT_high_pc158 .byte 6 # DW_FORM_data4159 .byte 0 # EOM(1)160 .byte 0 # EOM(2)161 .byte 2 # Abbreviation Code162 .byte 46 # DW_TAG_subprogram163 .byte 1 # DW_CHILDREN_yes164 .byte 110 # DW_AT_linkage_name165 .byte 14 # DW_FORM_strp166 .byte 3 # DW_AT_name167 .byte 14 # DW_FORM_strp168 .byte 58 # DW_AT_decl_file169 .byte 11 # DW_FORM_data1170 .byte 59 # DW_AT_decl_line171 .byte 11 # DW_FORM_data1172 .byte 73 # DW_AT_type173 .byte 19 # DW_FORM_ref4174 .byte 32 # DW_AT_inline175 .byte 11 # DW_FORM_data1176 .byte 0 # EOM(1)177 .byte 0 # EOM(2)178 .byte 3 # Abbreviation Code179 .byte 5 # DW_TAG_formal_parameter180 .byte 0 # DW_CHILDREN_no181 .byte 3 # DW_AT_name182 .byte 14 # DW_FORM_strp183 .byte 58 # DW_AT_decl_file184 .byte 11 # DW_FORM_data1185 .byte 59 # DW_AT_decl_line186 .byte 11 # DW_FORM_data1187 .byte 73 # DW_AT_type188 .byte 19 # DW_FORM_ref4189 .byte 0 # EOM(1)190 .byte 0 # EOM(2)191 .byte 4 # Abbreviation Code192 .byte 36 # DW_TAG_base_type193 .byte 0 # DW_CHILDREN_no194 .byte 3 # DW_AT_name195 .byte 14 # DW_FORM_strp196 .byte 62 # DW_AT_encoding197 .byte 11 # DW_FORM_data1198 .byte 11 # DW_AT_byte_size199 .byte 11 # DW_FORM_data1200 .byte 0 # EOM(1)201 .byte 0 # EOM(2)202 .byte 5 # Abbreviation Code203 .byte 46 # DW_TAG_subprogram204 .byte 1 # DW_CHILDREN_yes205 .byte 17 # DW_AT_low_pc206 .byte 1 # DW_FORM_addr207 .byte 18 # DW_AT_high_pc208 .byte 6 # DW_FORM_data4209 .byte 64 # DW_AT_frame_base210 .byte 24 # DW_FORM_exprloc211 .ascii "\227B" # DW_AT_GNU_all_call_sites212 .byte 25 # DW_FORM_flag_present213 .byte 3 # DW_AT_name214 .byte 14 # DW_FORM_strp215 .byte 58 # DW_AT_decl_file216 .byte 11 # DW_FORM_data1217 .byte 59 # DW_AT_decl_line218 .byte 11 # DW_FORM_data1219 .byte 73 # DW_AT_type220 .byte 19 # DW_FORM_ref4221 .byte 63 # DW_AT_external222 .byte 25 # DW_FORM_flag_present223 .byte 0 # EOM(1)224 .byte 0 # EOM(2)225 .byte 6 # Abbreviation Code226 .byte 5 # DW_TAG_formal_parameter227 .byte 0 # DW_CHILDREN_no228 .byte 2 # DW_AT_location229 .byte 23 # DW_FORM_sec_offset230 .byte 3 # DW_AT_name231 .byte 14 # DW_FORM_strp232 .byte 58 # DW_AT_decl_file233 .byte 11 # DW_FORM_data1234 .byte 59 # DW_AT_decl_line235 .byte 11 # DW_FORM_data1236 .byte 73 # DW_AT_type237 .byte 19 # DW_FORM_ref4238 .byte 0 # EOM(1)239 .byte 0 # EOM(2)240 .byte 7 # Abbreviation Code241 .byte 52 # DW_TAG_variable242 .byte 0 # DW_CHILDREN_no243 .byte 2 # DW_AT_location244 .byte 23 # DW_FORM_sec_offset245 .byte 3 # DW_AT_name246 .byte 14 # DW_FORM_strp247 .byte 58 # DW_AT_decl_file248 .byte 11 # DW_FORM_data1249 .byte 59 # DW_AT_decl_line250 .byte 11 # DW_FORM_data1251 .byte 73 # DW_AT_type252 .byte 19 # DW_FORM_ref4253 .byte 0 # EOM(1)254 .byte 0 # EOM(2)255 .byte 8 # Abbreviation Code256 .byte 29 # DW_TAG_inlined_subroutine257 .byte 1 # DW_CHILDREN_yes258 .byte 49 # DW_AT_abstract_origin259 .byte 19 # DW_FORM_ref4260 .byte 17 # DW_AT_low_pc261 .byte 1 # DW_FORM_addr262 .byte 18 # DW_AT_high_pc263 .byte 6 # DW_FORM_data4264 .byte 88 # DW_AT_call_file265 .byte 11 # DW_FORM_data1266 .byte 89 # DW_AT_call_line267 .byte 11 # DW_FORM_data1268 .byte 87 # DW_AT_call_column269 .byte 11 # DW_FORM_data1270 .byte 0 # EOM(1)271 .byte 0 # EOM(2)272 .byte 9 # Abbreviation Code273 .byte 5 # DW_TAG_formal_parameter274 .byte 0 # DW_CHILDREN_no275 .byte 2 # DW_AT_location276 .byte 24 # DW_FORM_exprloc277 .byte 49 # DW_AT_abstract_origin278 .byte 19 # DW_FORM_ref4279 .byte 0 # EOM(1)280 .byte 0 # EOM(2)281 .byte 10 # Abbreviation Code282 .ascii "\211\202\001" # DW_TAG_GNU_call_site283 .byte 0 # DW_CHILDREN_no284 .byte 49 # DW_AT_abstract_origin285 .byte 19 # DW_FORM_ref4286 .byte 17 # DW_AT_low_pc287 .byte 1 # DW_FORM_addr288 .byte 0 # EOM(1)289 .byte 0 # EOM(2)290 .byte 11 # Abbreviation Code291 .byte 46 # DW_TAG_subprogram292 .byte 0 # DW_CHILDREN_no293 .byte 110 # DW_AT_linkage_name294 .byte 14 # DW_FORM_strp295 .byte 3 # DW_AT_name296 .byte 14 # DW_FORM_strp297 .byte 58 # DW_AT_decl_file298 .byte 11 # DW_FORM_data1299 .byte 59 # DW_AT_decl_line300 .byte 11 # DW_FORM_data1301 .byte 60 # DW_AT_declaration302 .byte 25 # DW_FORM_flag_present303 .byte 63 # DW_AT_external304 .byte 25 # DW_FORM_flag_present305 .byte 0 # EOM(1)306 .byte 0 # EOM(2)307 .byte 12 # Abbreviation Code308 .byte 15 # DW_TAG_pointer_type309 .byte 0 # DW_CHILDREN_no310 .byte 73 # DW_AT_type311 .byte 19 # DW_FORM_ref4312 .byte 0 # EOM(1)313 .byte 0 # EOM(2)314 .byte 0 # EOM(3)315 .section .debug_info,"",@progbits316.Lcu_begin0:317 .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit318.Ldebug_info_start0:319 .short 4 # DWARF version number320 .long .debug_abbrev # Offset Into Abbrev. Section321 .byte 8 # Address Size (in bytes)322 .byte 1 # Abbrev [1] 0xb:0xcf DW_TAG_compile_unit323 .long .Linfo_string0 # DW_AT_producer324 .short 33 # DW_AT_language325 .long .Linfo_string1 # DW_AT_name326 .long .Lline_table_start0 # DW_AT_stmt_list327 .long .Linfo_string2 # DW_AT_comp_dir328 .quad .Lfunc_begin0 # DW_AT_low_pc329 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc330 .byte 2 # Abbrev [2] 0x2a:0x1c DW_TAG_subprogram331 .long .Linfo_string3 # DW_AT_linkage_name332 .long .Linfo_string4 # DW_AT_name333 .byte 1 # DW_AT_decl_file334 .byte 1 # DW_AT_decl_line335 .long 70 # DW_AT_type336 .byte 1 # DW_AT_inline337 .byte 3 # Abbrev [3] 0x3a:0xb DW_TAG_formal_parameter338 .long .Linfo_string6 # DW_AT_name339 .byte 1 # DW_AT_decl_file340 .byte 1 # DW_AT_decl_line341 .long 70 # DW_AT_type342 .byte 0 # End Of Children Mark343 .byte 4 # Abbrev [4] 0x46:0x7 DW_TAG_base_type344 .long .Linfo_string5 # DW_AT_name345 .byte 5 # DW_AT_encoding346 .byte 4 # DW_AT_byte_size347 .byte 5 # Abbrev [5] 0x4d:0x70 DW_TAG_subprogram348 .quad .Lfunc_begin0 # DW_AT_low_pc349 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc350 .byte 1 # DW_AT_frame_base351 .byte 87352 # DW_AT_GNU_all_call_sites353 .long .Linfo_string9 # DW_AT_name354 .byte 1 # DW_AT_decl_file355 .byte 5 # DW_AT_decl_line356 .long 70 # DW_AT_type357 # DW_AT_external358 .byte 6 # Abbrev [6] 0x66:0xf DW_TAG_formal_parameter359 .long .Ldebug_loc0 # DW_AT_location360 .long .Linfo_string10 # DW_AT_name361 .byte 1 # DW_AT_decl_file362 .byte 5 # DW_AT_decl_line363 .long 70 # DW_AT_type364 .byte 6 # Abbrev [6] 0x75:0xf DW_TAG_formal_parameter365 .long .Ldebug_loc1 # DW_AT_location366 .long .Linfo_string11 # DW_AT_name367 .byte 1 # DW_AT_decl_file368 .byte 5 # DW_AT_decl_line369 .long 200 # DW_AT_type370 .byte 7 # Abbrev [7] 0x84:0xf DW_TAG_variable371 .long .Ldebug_loc2 # DW_AT_location372 .long .Linfo_string13 # DW_AT_name373 .byte 1 # DW_AT_decl_file374 .byte 8 # DW_AT_decl_line375 .long 70 # DW_AT_type376 .byte 8 # Abbrev [8] 0x93:0x1c DW_TAG_inlined_subroutine377 .long 42 # DW_AT_abstract_origin378 .quad .Ltmp2 # DW_AT_low_pc379 .long 0 # DW_AT_high_pc Manually modified380 .byte 1 # DW_AT_call_file381 .byte 9 # DW_AT_call_line382 .byte 32 # DW_AT_call_column383 .byte 9 # Abbrev [9] 0xa7:0x7 DW_TAG_formal_parameter384 .byte 1 # DW_AT_location385 .byte 83386 .long 58 # DW_AT_abstract_origin387 .byte 0 # End Of Children Mark388 .byte 10 # Abbrev [10] 0xaf:0xd DW_TAG_GNU_call_site389 .long 189 # DW_AT_abstract_origin390 .quad .Ltmp2 # DW_AT_low_pc391 .byte 0 # End Of Children Mark392 .byte 11 # Abbrev [11] 0xbd:0xb DW_TAG_subprogram393 .long .Linfo_string7 # DW_AT_linkage_name394 .long .Linfo_string8 # DW_AT_name395 .byte 1 # DW_AT_decl_file396 .byte 4 # DW_AT_decl_line397 # DW_AT_declaration398 # DW_AT_external399 .byte 12 # Abbrev [12] 0xc8:0x5 DW_TAG_pointer_type400 .long 205 # DW_AT_type401 .byte 12 # Abbrev [12] 0xcd:0x5 DW_TAG_pointer_type402 .long 210 # DW_AT_type403 .byte 4 # Abbrev [4] 0xd2:0x7 DW_TAG_base_type404 .long .Linfo_string12 # DW_AT_name405 .byte 6 # DW_AT_encoding406 .byte 1 # DW_AT_byte_size407 .byte 0 # End Of Children Mark408.Ldebug_info_end0:409 .section .debug_str,"MS",@progbits,1410.Linfo_string0:411 .asciz "clang version 16.0.0" # string offset=0412.Linfo_string1:413 .asciz "main.cpp" # string offset=105414.Linfo_string2:415 .asciz "." # string offset=114416.Linfo_string3:417 .asciz "_ZL6helperi" # string offset=152418.Linfo_string4:419 .asciz "helper" # string offset=164420.Linfo_string5:421 .asciz "int" # string offset=171422.Linfo_string6:423 .asciz "i" # string offset=175424.Linfo_string7:425 .asciz "_Z13may_not_existv" # string offset=177426.Linfo_string8:427 .asciz "may_not_exist" # string offset=196428.Linfo_string9:429 .asciz "main" # string offset=210430.Linfo_string10:431 .asciz "argc" # string offset=215432.Linfo_string11:433 .asciz "argv" # string offset=220434.Linfo_string12:435 .asciz "char" # string offset=225436.Linfo_string13:437 .asciz "j" # string offset=230438 .weak _Z13may_not_existv439 .ident "clang version 16.0.0"440 .section ".note.GNU-stack","",@progbits441 .addrsig442 .addrsig_sym _Z13may_not_existv443 .section .debug_line,"",@progbits444.Lline_table_start0:445