# REQUIRES: system-linux # RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %s -o %tmain.o # RUN: %clang %cflags -dwarf-4 %tmain.o -o %t.exe -Wl,-q # RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections # RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe | FileCheck --check-prefix=PRECHECK %s # RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt > %t.txt # RUN: llvm-objdump -d %t.bolt >> %t.txt # RUN: cat %t.txt | FileCheck --check-prefix=POSTCHECK %s ## This test checks that we correctly handle DW_AT_low_pc [DW_FORM_addr] that is part of DW_TAG_label. # PRECHECK: version = 0x0004 # PRECHECK: DW_TAG_label # PRECHECK-NEXT: DW_AT_name # PRECHECK-NEXT: DW_AT_decl_file # PRECHECK-NEXT: DW_AT_decl_line # PRECHECK-NEXT:DW_AT_low_pc [DW_FORM_addr] # PRECHECK: DW_TAG_label # PRECHECK-NEXT: DW_AT_name # PRECHECK-NEXT: DW_AT_decl_file # PRECHECK-NEXT: DW_AT_decl_line # PRECHECK-NEXT:DW_AT_low_pc [DW_FORM_addr] # POSTCHECK: version = 0x0004 # POSTCHECK: DW_TAG_label # POSTCHECK-NEXT: DW_AT_name # POSTCHECK-NEXT: DW_AT_decl_file # POSTCHECK-NEXT: DW_AT_decl_line # POSTCHECK-NEXT:DW_AT_low_pc [DW_FORM_addr] (0x[[ADDR:[1-9a-f]*]] # POSTCHECK: DW_TAG_label # POSTCHECK-NEXT: DW_AT_name # POSTCHECK-NEXT: DW_AT_decl_file # POSTCHECK-NEXT: DW_AT_decl_line # POSTCHECK-NEXT:DW_AT_low_pc [DW_FORM_addr] (0x[[ADDR2:[1-9a-f]*]] # POSTCHECK: [[ADDR]]: 8b 45 f8 # POSTCHECK: [[ADDR2]]: 8b 45 f8 ## clang++ main.cpp -g2 -gdwarf-4 -S ## int main() { ## int a = 4; ## if (a == 5) ## goto LABEL1; ## else ## goto LABEL2; ## LABEL1:a++; ## LABEL2:a--; ## return 0; ## } .text .file "main.cpp" .globl main # -- Begin function main .p2align 4, 0x90 .type main,@function main: # @main .Lfunc_begin0: .file 1 "/home" "main.cpp" .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 movl $0, -4(%rbp) .Ltmp0: .loc 1 2 7 prologue_end # main.cpp:2:7 movl $4, -8(%rbp) .Ltmp1: .loc 1 3 9 # main.cpp:3:9 cmpl $5, -8(%rbp) .Ltmp2: .loc 1 3 7 is_stmt 0 # main.cpp:3:7 jne .LBB0_2 # %bb.1: # %if.then .Ltmp3: .loc 1 4 5 is_stmt 1 # main.cpp:4:5 jmp .LBB0_3 .LBB0_2: # %if.else .loc 1 6 5 # main.cpp:6:5 jmp .LBB0_4 .Ltmp4: .LBB0_3: # %LABEL1 #DEBUG_LABEL: main:LABEL1 .loc 1 7 11 # main.cpp:7:11 movl -8(%rbp), %eax addl $1, %eax movl %eax, -8(%rbp) .LBB0_4: # %LABEL2 .Ltmp5: #DEBUG_LABEL: main:LABEL2 .loc 1 8 11 # main.cpp:8:11 movl -8(%rbp), %eax addl $-1, %eax movl %eax, -8(%rbp) .loc 1 9 3 # main.cpp:9:3 xorl %eax, %eax .loc 1 9 3 epilogue_begin is_stmt 0 # main.cpp:9:3 popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp6: .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 10 # DW_TAG_label .byte 0 # DW_CHILDREN_no .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 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 5 # 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 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:0x6d 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:0x46 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 1 # DW_AT_decl_line .long 112 # 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 2 # DW_AT_decl_line .long 112 # DW_AT_type .byte 4 # Abbrev [4] 0x51:0xf DW_TAG_label .long .Linfo_string6 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 7 # DW_AT_decl_line .quad .Ltmp4 # DW_AT_low_pc .byte 4 # Abbrev [4] 0x60:0xf DW_TAG_label .long .Linfo_string7 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 8 # DW_AT_decl_line .quad .Ltmp5 # DW_AT_low_pc .byte 0 # End Of Children Mark .byte 5 # Abbrev [5] 0x70:0x7 DW_TAG_base_type .long .Linfo_string4 # DW_AT_name .byte 5 # 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 19.0.0git" # string offset=0 .Linfo_string1: .asciz "main.cpp" # string offset=24 .Linfo_string2: .asciz "/home" # string offset=33 .Linfo_string3: .asciz "main" # string offset=71 .Linfo_string4: .asciz "int" # string offset=76 .Linfo_string5: .asciz "a" # string offset=80 .Linfo_string6: .asciz "LABEL1" # string offset=82 .Linfo_string7: .asciz "LABEL2" # string offset=89 .ident "clang version 19.0.0git" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: