diff --git a/bolt/lib/Rewrite/DWARFRewriter.cpp b/bolt/lib/Rewrite/DWARFRewriter.cpp index 592b2352fc9a..d1b62a78ffbf 100644 --- a/bolt/lib/Rewrite/DWARFRewriter.cpp +++ b/bolt/lib/Rewrite/DWARFRewriter.cpp @@ -873,7 +873,9 @@ void DWARFRewriter::updateUnitDebugInfo( OutputRanges.push_back({0, 0}); const uint64_t RangesSectionOffset = RangesSectionWriter.addRanges(OutputRanges); - if (!Unit.isDWOUnit()) + // Don't emit the zero low_pc arange. + if (!Unit.isDWOUnit() && !OutputRanges.empty() && + OutputRanges.back().LowPC) ARangesSectionWriter->addCURanges(Unit.getOffset(), std::move(OutputRanges)); updateDWARFObjectAddressRanges(Unit, DIEBldr, *Die, RangesSectionOffset, diff --git a/bolt/test/X86/Inputs/dwarf5-empty-arange-helper.s b/bolt/test/X86/Inputs/dwarf5-empty-arange-helper.s new file mode 100644 index 000000000000..c546f4dcd830 --- /dev/null +++ b/bolt/test/X86/Inputs/dwarf5-empty-arange-helper.s @@ -0,0 +1,325 @@ +# clang++ -O0 -g2 -S -ffunction-sections -o +# int Foo; +# int helper() { +# return 0; +# } +# +# int helperhelper() { +# return 0; +# } +# int helperhelper2() { +# return 1; +# } + + .text + .file "helper.cpp" + .file 0 "/repro2" "helper.cpp" md5 0xef451fc8d099ed067c9f2ff97d8aacf6 + .section .text._Z6helperv,"ax",@progbits + .globl _Z6helperv # -- Begin function _Z6helperv + .p2align 4, 0x90 + .type _Z6helperv,@function +_Z6helperv: # @_Z6helperv +.Lfunc_begin0: + .loc 0 2 0 # helper.cpp:2:0 + .cfi_startproc +# %bb.0: # %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +.Ltmp0: + .loc 0 3 3 prologue_end # helper.cpp:3:3 + xorl %eax, %eax + .loc 0 3 3 epilogue_begin is_stmt 0 # helper.cpp:3:3 + popq %rbp + .cfi_def_cfa %rsp, 8 + retq +.Ltmp1: +.Lfunc_end0: + .size _Z6helperv, .Lfunc_end0-_Z6helperv + .cfi_endproc + # -- End function + .section .text._Z12helperhelperv,"ax",@progbits + .globl _Z12helperhelperv # -- Begin function _Z12helperhelperv + .p2align 4, 0x90 + .type _Z12helperhelperv,@function +_Z12helperhelperv: # @_Z12helperhelperv +.Lfunc_begin1: + .loc 0 5 0 is_stmt 1 # helper.cpp:5:0 + .cfi_startproc +# %bb.0: # %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +.Ltmp2: + .loc 0 6 3 prologue_end # helper.cpp:6:3 + xorl %eax, %eax + .loc 0 6 3 epilogue_begin is_stmt 0 # helper.cpp:6:3 + popq %rbp + .cfi_def_cfa %rsp, 8 + retq +.Ltmp3: +.Lfunc_end1: + .size _Z12helperhelperv, .Lfunc_end1-_Z12helperhelperv + .cfi_endproc + # -- End function + .section .text._Z13helperhelper2v,"ax",@progbits + .globl _Z13helperhelper2v # -- Begin function _Z13helperhelper2v + .p2align 4, 0x90 + .type _Z13helperhelper2v,@function +_Z13helperhelper2v: # @_Z13helperhelper2v +.Lfunc_begin2: + .loc 0 8 0 is_stmt 1 # helper.cpp:8:0 + .cfi_startproc +# %bb.0: # %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +.Ltmp4: + .loc 0 9 3 prologue_end # helper.cpp:9:3 + movl $1, %eax + .loc 0 9 3 epilogue_begin is_stmt 0 # helper.cpp:9:3 + popq %rbp + .cfi_def_cfa %rsp, 8 + retq +.Ltmp5: +.Lfunc_end2: + .size _Z13helperhelper2v, .Lfunc_end2-_Z13helperhelper2v + .cfi_endproc + # -- End function + .type Foo,@object # @Foo + .bss + .globl Foo + .p2align 2, 0x0 +Foo: + .long 0 # 0x0 + .size Foo, 4 + + .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 37 # DW_FORM_strx1 + .byte 19 # DW_AT_language + .byte 5 # DW_FORM_data2 + .byte 3 # DW_AT_name + .byte 37 # DW_FORM_strx1 + .byte 114 # DW_AT_str_offsets_base + .byte 23 # DW_FORM_sec_offset + .byte 16 # DW_AT_stmt_list + .byte 23 # DW_FORM_sec_offset + .byte 27 # DW_AT_comp_dir + .byte 37 # DW_FORM_strx1 + .byte 17 # DW_AT_low_pc + .byte 1 # DW_FORM_addr + .byte 85 # DW_AT_ranges + .byte 35 # DW_FORM_rnglistx + .byte 115 # DW_AT_addr_base + .byte 23 # DW_FORM_sec_offset + .byte 116 # DW_AT_rnglists_base + .byte 23 # DW_FORM_sec_offset + .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 + .byte 37 # DW_FORM_strx1 + .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 + .byte 37 # DW_FORM_strx1 + .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 0 # DW_CHILDREN_no + .byte 17 # DW_AT_low_pc + .byte 27 # DW_FORM_addrx + .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 + .byte 37 # DW_FORM_strx1 + .byte 3 # DW_AT_name + .byte 37 # DW_FORM_strx1 + .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 0 # EOM(3) + .section .debug_info,"",@progbits +.Lcu_begin0: + .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit +.Ldebug_info_start0: + .short 5 # DWARF version number + .byte 1 # DWARF Unit Type + .byte 8 # Address Size (in bytes) + .long .debug_abbrev # Offset Into Abbrev. Section + .byte 1 # Abbrev [1] 0xc:0x5f DW_TAG_compile_unit + .byte 0 # DW_AT_producer + .short 33 # DW_AT_language + .byte 1 # DW_AT_name + .long .Lstr_offsets_base0 # DW_AT_str_offsets_base + .long .Lline_table_start0 # DW_AT_stmt_list + .byte 2 # DW_AT_comp_dir + .quad 0 # DW_AT_low_pc + .byte 0 # DW_AT_ranges + .long .Laddr_table_base0 # DW_AT_addr_base + .long .Lrnglists_table_base0 # DW_AT_rnglists_base + .byte 2 # Abbrev [2] 0x2b:0xb DW_TAG_variable + .byte 3 # DW_AT_name + .long 54 # DW_AT_type + # DW_AT_external + .byte 0 # DW_AT_decl_file + .byte 1 # DW_AT_decl_line + .byte 2 # DW_AT_location + .byte 161 + .byte 0 + .byte 3 # Abbrev [3] 0x36:0x4 DW_TAG_base_type + .byte 4 # DW_AT_name + .byte 5 # DW_AT_encoding + .byte 4 # DW_AT_byte_size + .byte 4 # Abbrev [4] 0x3a:0x10 DW_TAG_subprogram + .byte 1 # DW_AT_low_pc + .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc + .byte 1 # DW_AT_frame_base + .byte 86 + .byte 5 # DW_AT_linkage_name + .byte 6 # DW_AT_name + .byte 0 # DW_AT_decl_file + .byte 2 # DW_AT_decl_line + .long 54 # DW_AT_type + # DW_AT_external + .byte 4 # Abbrev [4] 0x4a:0x10 DW_TAG_subprogram + .byte 2 # DW_AT_low_pc + .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc + .byte 1 # DW_AT_frame_base + .byte 86 + .byte 7 # DW_AT_linkage_name + .byte 8 # DW_AT_name + .byte 0 # DW_AT_decl_file + .byte 5 # DW_AT_decl_line + .long 54 # DW_AT_type + # DW_AT_external + .byte 4 # Abbrev [4] 0x5a:0x10 DW_TAG_subprogram + .byte 3 # DW_AT_low_pc + .long .Lfunc_end2-.Lfunc_begin2 # DW_AT_high_pc + .byte 1 # DW_AT_frame_base + .byte 86 + .byte 9 # DW_AT_linkage_name + .byte 10 # DW_AT_name + .byte 0 # DW_AT_decl_file + .byte 8 # DW_AT_decl_line + .long 54 # DW_AT_type + # DW_AT_external + .byte 0 # End Of Children Mark +.Ldebug_info_end0: + .section .debug_rnglists,"",@progbits + .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length +.Ldebug_list_header_start0: + .short 5 # Version + .byte 8 # Address size + .byte 0 # Segment selector size + .long 1 # Offset entry count +.Lrnglists_table_base0: + .long .Ldebug_ranges0-.Lrnglists_table_base0 +.Ldebug_ranges0: + .byte 3 # DW_RLE_startx_length + .byte 1 # start index + .uleb128 .Lfunc_end0-.Lfunc_begin0 # length + .byte 3 # DW_RLE_startx_length + .byte 2 # start index + .uleb128 .Lfunc_end1-.Lfunc_begin1 # length + .byte 3 # DW_RLE_startx_length + .byte 3 # start index + .uleb128 .Lfunc_end2-.Lfunc_begin2 # length + .byte 0 # DW_RLE_end_of_list +.Ldebug_list_header_end0: + .section .debug_str_offsets,"",@progbits + .long 48 # Length of String Offsets Set + .short 5 + .short 0 +.Lstr_offsets_base0: + .section .debug_str,"MS",@progbits,1 +.Linfo_string0: + .asciz "clang version 19.0.0git (git@github.com:ayermolo/llvm-project.git 6c884ef47e88e5ff18353819e806fe1b84e3c5b5)" # string offset=0 +.Linfo_string1: + .asciz "helper.cpp" # string offset=108 +.Linfo_string2: + .asciz "/repro2" # string offset=119 +.Linfo_string3: + .asciz "Foo" # string offset=164 +.Linfo_string4: + .asciz "int" # string offset=168 +.Linfo_string5: + .asciz "_Z6helperv" # string offset=172 +.Linfo_string6: + .asciz "helper" # string offset=183 +.Linfo_string7: + .asciz "_Z12helperhelperv" # string offset=190 +.Linfo_string8: + .asciz "helperhelper" # string offset=208 +.Linfo_string9: + .asciz "_Z13helperhelper2v" # string offset=221 +.Linfo_string10: + .asciz "helperhelper2" # string offset=240 + .section .debug_str_offsets,"",@progbits + .long .Linfo_string0 + .long .Linfo_string1 + .long .Linfo_string2 + .long .Linfo_string3 + .long .Linfo_string4 + .long .Linfo_string5 + .long .Linfo_string6 + .long .Linfo_string7 + .long .Linfo_string8 + .long .Linfo_string9 + .long .Linfo_string10 + .section .debug_addr,"",@progbits + .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution +.Ldebug_addr_start0: + .short 5 # DWARF version number + .byte 8 # Address size + .byte 0 # Segment selector size +.Laddr_table_base0: + .quad Foo + .quad .Lfunc_begin0 + .quad .Lfunc_begin1 + .quad .Lfunc_begin2 +.Ldebug_addr_end0: + .ident "clang version 19.0.0git (git@github.com:ayermolo/llvm-project.git 6c884ef47e88e5ff18353819e806fe1b84e3c5b5)" + .section ".note.GNU-stack","",@progbits + .addrsig + .section .debug_line,"",@progbits +.Lline_table_start0: diff --git a/bolt/test/X86/Inputs/dwarf5-empty-arange-main.s b/bolt/test/X86/Inputs/dwarf5-empty-arange-main.s new file mode 100644 index 000000000000..d4dcfd88d6e0 --- /dev/null +++ b/bolt/test/X86/Inputs/dwarf5-empty-arange-main.s @@ -0,0 +1,221 @@ +# clang++ -O0 -g2 -S -ffunction-sections -o +# extern int Foo; +# int main(int argc, char *argv[]) { +# return 0; +# } + + .text + .file "main.cpp" + .section .text.main,"ax",@progbits + .globl main # -- Begin function main + .p2align 4, 0x90 + .type main,@function +main: # @main +.Lfunc_begin0: + .file 0 "/repro2" "main.cpp" md5 0x44051a7da6269c029bfea564d92d1db4 + .loc 0 2 0 # main.cpp:2:0 + .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) + movl %edi, -8(%rbp) + movq %rsi, -16(%rbp) +.Ltmp0: + .loc 0 3 3 prologue_end # main.cpp:3:3 + xorl %eax, %eax + .loc 0 3 3 epilogue_begin is_stmt 0 # main.cpp:3:3 + 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 37 # DW_FORM_strx1 + .byte 19 # DW_AT_language + .byte 5 # DW_FORM_data2 + .byte 3 # DW_AT_name + .byte 37 # DW_FORM_strx1 + .byte 114 # DW_AT_str_offsets_base + .byte 23 # DW_FORM_sec_offset + .byte 16 # DW_AT_stmt_list + .byte 23 # DW_FORM_sec_offset + .byte 27 # DW_AT_comp_dir + .byte 37 # DW_FORM_strx1 + .byte 17 # DW_AT_low_pc + .byte 27 # DW_FORM_addrx + .byte 18 # DW_AT_high_pc + .byte 6 # DW_FORM_data4 + .byte 115 # DW_AT_addr_base + .byte 23 # DW_FORM_sec_offset + .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 27 # DW_FORM_addrx + .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 37 # DW_FORM_strx1 + .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 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 + .byte 37 # DW_FORM_strx1 + .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 37 # DW_FORM_strx1 + .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 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_info,"",@progbits +.Lcu_begin0: + .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit +.Ldebug_info_start0: + .short 5 # DWARF version number + .byte 1 # DWARF Unit Type + .byte 8 # Address Size (in bytes) + .long .debug_abbrev # Offset Into Abbrev. Section + .byte 1 # Abbrev [1] 0xc:0x50 DW_TAG_compile_unit + .byte 0 # DW_AT_producer + .short 33 # DW_AT_language + .byte 1 # DW_AT_name + .long .Lstr_offsets_base0 # DW_AT_str_offsets_base + .long .Lline_table_start0 # DW_AT_stmt_list + .byte 2 # DW_AT_comp_dir + .byte 0 # DW_AT_low_pc + .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc + .long .Laddr_table_base0 # DW_AT_addr_base + .byte 2 # Abbrev [2] 0x23:0x26 DW_TAG_subprogram + .byte 0 # 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_name + .byte 0 # DW_AT_decl_file + .byte 2 # DW_AT_decl_line + .long 73 # DW_AT_type + # DW_AT_external + .byte 3 # Abbrev [3] 0x32:0xb DW_TAG_formal_parameter + .byte 2 # DW_AT_location + .byte 145 + .byte 120 + .byte 5 # DW_AT_name + .byte 0 # DW_AT_decl_file + .byte 2 # DW_AT_decl_line + .long 73 # DW_AT_type + .byte 3 # Abbrev [3] 0x3d:0xb DW_TAG_formal_parameter + .byte 2 # DW_AT_location + .byte 145 + .byte 112 + .byte 6 # DW_AT_name + .byte 0 # DW_AT_decl_file + .byte 2 # DW_AT_decl_line + .long 77 # DW_AT_type + .byte 0 # End Of Children Mark + .byte 4 # Abbrev [4] 0x49:0x4 DW_TAG_base_type + .byte 4 # DW_AT_name + .byte 5 # DW_AT_encoding + .byte 4 # DW_AT_byte_size + .byte 5 # Abbrev [5] 0x4d:0x5 DW_TAG_pointer_type + .long 82 # DW_AT_type + .byte 5 # Abbrev [5] 0x52:0x5 DW_TAG_pointer_type + .long 87 # DW_AT_type + .byte 4 # Abbrev [4] 0x57:0x4 DW_TAG_base_type + .byte 7 # DW_AT_name + .byte 6 # DW_AT_encoding + .byte 1 # DW_AT_byte_size + .byte 0 # End Of Children Mark +.Ldebug_info_end0: + .section .debug_str_offsets,"",@progbits + .long 36 # Length of String Offsets Set + .short 5 + .short 0 +.Lstr_offsets_base0: + .section .debug_str,"MS",@progbits,1 +.Linfo_string0: + .asciz "clang version 19.0.0git (git@github.com:ayermolo/llvm-project.git 6c884ef47e88e5ff18353819e806fe1b84e3c5b5)" # string offset=0 +.Linfo_string1: + .asciz "main.cpp" # string offset=108 +.Linfo_string2: + .asciz "/repro2" # string offset=117 +.Linfo_string3: + .asciz "main" # string offset=162 +.Linfo_string4: + .asciz "int" # string offset=167 +.Linfo_string5: + .asciz "argc" # string offset=171 +.Linfo_string6: + .asciz "argv" # string offset=176 +.Linfo_string7: + .asciz "char" # string offset=181 + .section .debug_str_offsets,"",@progbits + .long .Linfo_string0 + .long .Linfo_string1 + .long .Linfo_string2 + .long .Linfo_string3 + .long .Linfo_string4 + .long .Linfo_string5 + .long .Linfo_string6 + .long .Linfo_string7 + .section .debug_addr,"",@progbits + .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution +.Ldebug_addr_start0: + .short 5 # DWARF version number + .byte 8 # Address size + .byte 0 # Segment selector size +.Laddr_table_base0: + .quad .Lfunc_begin0 +.Ldebug_addr_end0: + .ident "clang version 19.0.0git (git@github.com:ayermolo/llvm-project.git 6c884ef47e88e5ff18353819e806fe1b84e3c5b5)" + .section ".note.GNU-stack","",@progbits + .addrsig + .section .debug_line,"",@progbits +.Lline_table_start0: diff --git a/bolt/test/X86/dwarf5-empty-arange.test b/bolt/test/X86/dwarf5-empty-arange.test new file mode 100644 index 000000000000..61e966204843 --- /dev/null +++ b/bolt/test/X86/dwarf5-empty-arange.test @@ -0,0 +1,19 @@ +# REQUIRES: system-linux + +# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-empty-arange-main.s -o %tmain.o +# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-empty-arange-helper.s -o %thelper.o +# RUN: %clang %cflags -dwarf-5 %tmain.o %thelper.o -o %t.exe -Wl,--entry=main -Wl,-q -Wl,-gc-sections +# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections +# RUN: llvm-dwarfdump --debug-aranges %t.bolt > %t.txt +# RUN: llvm-dwarfdump --debug-info -r 0 %t.bolt >> %t.txt +# RUN: cat %t.txt | FileCheck --check-prefix=POSTCHECK %s + +## This tests checks that BOLT handles correctly empty arange. Before we would output 0x0,0x0. +## Which tools interpreted as an end to aragnes list. + +# POSTCHECK: Address Range Header +# POSTCHECK-NOT: Address Range Header +# POSTCHECK: DW_TAG_compile_unit +# POSTCHECK: DW_TAG_compile_unit +# POSTCHECK: DW_AT_ranges +# POSTCHECK-NEXT: [0x0000000000000000, 0x0000000000000000))