# REQUIRES: system-linux # RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %s -o %t.o # RUN: %clang %cflags -gdwarf-4 %t.o -o %t.exe # RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections # RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt | FileCheck --check-prefix=POSTCHECK %s ## This test checks that BOLT handles DW_AT_sibling. ## The assembly was manually modified to do cross CU reference. # POSTCHECK: version = 0x0004 # POSTCHECK: DW_TAG_structure_type [5] # POSTCHECK: DW_AT_sibling [DW_FORM_ref4] (cu + 0x0062 => {0x00000062}) # POSTCHECK-EMPTY: # POSTCHECK-NEXT: DW_TAG_typedef [6] # POSTCHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0059 => {0x00000059} "structure ") # typedef struct # { # unsigned a; # unsigned b; # } S; # # int main() { # S s; # s.a = 0x64A40101; # } .text .file "main.cpp" .globl main # -- Begin function main .p2align 4, 0x90 .type main,@function main: # @main .Lfunc_begin0: .file 1 "/dwarf4-sibling-test" "main.cpp" .loc 1 7 0 # main.cpp:7:0 .cfi_startproc # %bb.0: pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset %rbp, -16 movq %rsp, %rbp .cfi_def_cfa_register %rbp .Ltmp0: .loc 1 9 7 prologue_end # main.cpp:9:7 movl $1688469761, -8(%rbp) # imm = 0x64A40101 .loc 1 10 1 # main.cpp:10:1 xorl %eax, %eax .loc 1 10 1 epilogue_begin is_stmt 0 # main.cpp:10:1 popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp1: .Lfunc_end0: .size main, .Lfunc_end0-main .cfi_endproc # -- End function .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 14 # DW_FORM_strp .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 14 # DW_FORM_strp .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .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 .byte 14 # DW_FORM_strp .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 3 # Abbreviation Code .byte 52 # DW_TAG_variable .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 4 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 5 # Abbreviation Code .byte 22 # DW_TAG_typedef .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 6 # Abbreviation Code .byte 19 # DW_TAG_structure_type .byte 1 # DW_CHILDREN_yes .byte 54 # DW_AT_calling_convention .byte 11 # DW_FORM_data1 .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 1 # DW_AT_sibling <-- manually added .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 7 # Abbreviation Code .byte 13 # DW_TAG_member .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 56 # DW_AT_data_member_location .byte 11 # DW_FORM_data1 .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:0x7f DW_TAG_compile_unit .long .Linfo_string0 # DW_AT_producer .short 33 # DW_AT_language .long .Linfo_string1 # DW_AT_name .long .Lline_table_start0 # DW_AT_stmt_list .long .Linfo_string2 # DW_AT_comp_dir .quad .Lfunc_begin0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 2 # Abbrev [2] 0x2a:0x28 DW_TAG_subprogram .quad .Lfunc_begin0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 .long .Linfo_string3 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 7 # DW_AT_decl_line .long 82 # DW_AT_type # DW_AT_external .byte 3 # Abbrev [3] 0x43:0xe DW_TAG_variable .byte 2 # DW_AT_location .byte 145 .byte 120 .long .Linfo_string5 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 8 # DW_AT_decl_line .long 89 # DW_AT_type .byte 0 # End Of Children Mark .byte 4 # Abbrev [4] 0x52:0x7 DW_TAG_base_type .long .Linfo_string4 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .Linfo_structured_type: .byte 6 # Abbrev [6] 0x64:0x1e DW_TAG_structure_type .byte 5 # DW_AT_calling_convention .byte 8 # DW_AT_byte_size .byte 1 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .long .Linfo_sibling # DW_AT_sibling <-- Manually added .Linfo_sibling: .byte 5 # Abbrev [5] 0x59:0xb DW_TAG_typedef .long .Linfo_structured_type # DW_AT_type <-- Manually modified .long .Linfo_string9 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 5 # DW_AT_decl_line .byte 7 # Abbrev [7] 0x69:0xc DW_TAG_member .long .Linfo_string6 # DW_AT_name .long .Linfo_base_type # DW_AT_type .byte 1 # DW_AT_decl_file .byte 3 # DW_AT_decl_line .byte 0 # DW_AT_data_member_location .byte 7 # Abbrev [7] 0x75:0xc DW_TAG_member .long .Linfo_string8 # DW_AT_name .long .Linfo_base_type # DW_AT_type .byte 1 # DW_AT_decl_file .byte 4 # DW_AT_decl_line .byte 4 # DW_AT_data_member_location .byte 0 # End Of Children Mark .Linfo_base_type: .byte 4 # Abbrev [4] 0x82:0x7 DW_TAG_base_type .long .Linfo_string7 # DW_AT_name .byte 7 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 0 # End Of Children Mark .Ldebug_info_end0: .section .debug_str,"MS",@progbits,1 .Linfo_string0: .asciz "clang version 15.0.0" # string offset=0 .Linfo_string1: .asciz "main.cpp" # string offset=146 .Linfo_string2: .asciz "/dwarf4-sibling-test" # string offset=155 .Linfo_string3: .asciz "main" # string offset=213 .Linfo_string4: .asciz "int" # string offset=218 .Linfo_string5: .asciz "s" # string offset=222 .Linfo_string6: .asciz "a" # string offset=224 .Linfo_string7: .asciz "unsigned int" # string offset=226 .Linfo_string8: .asciz "b" # string offset=239 .Linfo_string9: .asciz "S" # string offset=241 .ident "clang version 15.0.0" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: