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[BOLT][DWARF] Fix output ranges for deleted code (#73464)

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Set range low_pc to 0 for DIEs that correspond to deleted code.

Fixes #73428
This commit is contained in:
Maksim Panchenko 2023-11-28 22:40:53 -08:00 committed by GitHub
parent 35db35b7cf
commit 0acfe8483a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 917 additions and 2 deletions
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3
bolt/lib/Rewrite/DWARFRewriter.cpp
View File

@ -961,8 +961,7 @@ void DWARFRewriter::updateUnitDebugInfo(
std::move(OutputRanges), CachedRanges);
OutputRanges.clear();
} else if (OutputRanges.empty()) {
OutputRanges.push_back({RangesOrError.get().front().LowPC,
RangesOrError.get().front().HighPC});
OutputRanges.push_back({0, RangesOrError.get().front().HighPC});
}
} else if (!RangesOrError) {
consumeError(RangesOrError.takeError());

432
bolt/test/X86/dwarf4-deleted-range.s Normal file
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@ -0,0 +1,432 @@
# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %s -o %tmain.o
# RUN: %clang %cflags -no-pie %s -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections
# RUN: llvm-dwarfdump --show-children --name=main --debug-info %t.bolt \
# RUN: | FileCheck %s
# CHECK: DW_TAG_inlined_subroutine
# CHECK: DW_AT_low_pc
# CHECK-SAME: 0x0000000000000000
# CHECK: DW_TAG_GNU_call_site
# CHECK: DW_AT_low_pc
# CHECK-SAME: 0x0000000000000000
## Test that llvm-bolt correctly updates DIEs corresponding to deleted code.
# Test case built from the following source using:
#
# clang -O2 -g ...
#
# Assembly modified with "je" -> "jmp" to introduce unreachable block.
#
# extern void puts(const char *);
#
# static void foo() {
# puts("hi");
# }
#
# int main(int argc, char **argv) {
# if (argc)
# foo();
# return 0;
# }
.text
.file "unreachable.c"
.file 1 "." "unreachable.c"
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.loc 1 7 0 # unreachable.c:7:0
.cfi_startproc
# %bb.0:
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
.loc 1 8 7 prologue_end # unreachable.c:8:7
testl %edi, %edi
.Ltmp0:
.loc 1 8 7 is_stmt 0 # unreachable.c:8:7
jmp .LBB0_2
.Ltmp1:
# %bb.1:
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
pushq %rax
.cfi_def_cfa_offset 16
.Ltmp2:
.loc 1 4 3 is_stmt 1 # unreachable.c:4:3
movl $.L.str, %edi
.Ltmp3:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
callq puts
.Ltmp4:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 1 0 3 is_stmt 0 # unreachable.c:0:3
addq $8, %rsp
.Ltmp5:
.cfi_def_cfa_offset 8
.LBB0_2:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 1 10 3 is_stmt 1 # unreachable.c:10:3
xorl %eax, %eax
retq
.Ltmp6:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.type .L.str,@object # @.str
.section .rodata.str1.1,"aMS",@progbits,1
.L.str:
.asciz "hi"
.size .L.str, 3
.section .debug_loc,"",@progbits
.Ldebug_loc0:
.quad .Lfunc_begin0-.Lfunc_begin0
.quad .Ltmp3-.Lfunc_begin0
.short 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.quad .Ltmp3-.Lfunc_begin0
.quad .Lfunc_end0-.Lfunc_begin0
.short 4 # Loc expr size
.byte 243 # DW_OP_GNU_entry_value
.byte 1 # 1
.byte 85 # super-register DW_OP_reg5
.byte 159 # DW_OP_stack_value
.quad 0
.quad 0
.Ldebug_loc1:
.quad .Lfunc_begin0-.Lfunc_begin0
.quad .Ltmp4-.Lfunc_begin0
.short 1 # Loc expr size
.byte 84 # DW_OP_reg4
.quad .Ltmp4-.Lfunc_begin0
.quad .Lfunc_end0-.Lfunc_begin0
.short 4 # Loc expr size
.byte 243 # DW_OP_GNU_entry_value
.byte 1 # 1
.byte 84 # DW_OP_reg4
.byte 159 # DW_OP_stack_value
.quad 0
.quad 0
.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 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.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 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 1 # DW_TAG_array_type
.byte 1 # DW_CHILDREN_yes
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 33 # DW_TAG_subrange_type
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 55 # DW_AT_count
.byte 11 # DW_FORM_data1
.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 6 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.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 32 # DW_AT_inline
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 8 # 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
.ascii "\227B" # DW_AT_GNU_all_call_sites
.byte 25 # DW_FORM_flag_present
.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 39 # DW_AT_prototyped
.byte 25 # DW_FORM_flag_present
.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 9 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.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 10 # Abbreviation Code
.byte 29 # DW_TAG_inlined_subroutine
.byte 0 # DW_CHILDREN_no
.byte 49 # DW_AT_abstract_origin
.byte 19 # DW_FORM_ref4
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 88 # DW_AT_call_file
.byte 11 # DW_FORM_data1
.byte 89 # DW_AT_call_line
.byte 11 # DW_FORM_data1
.byte 87 # DW_AT_call_column
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 11 # Abbreviation Code
.ascii "\211\202\001" # DW_TAG_GNU_call_site
.byte 0 # DW_CHILDREN_no
.byte 49 # DW_AT_abstract_origin
.byte 19 # DW_FORM_ref4
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 12 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.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 39 # DW_AT_prototyped
.byte 25 # DW_FORM_flag_present
.byte 60 # DW_AT_declaration
.byte 25 # DW_FORM_flag_present
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 13 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 14 # 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 15 # Abbreviation Code
.byte 38 # DW_TAG_const_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 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0xd4 DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 12 # 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:0x11 DW_TAG_variable
.long 59 # DW_AT_type
.byte 1 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.byte 9 # DW_AT_location
.byte 3
.quad .L.str
.byte 3 # Abbrev [3] 0x3b:0xc DW_TAG_array_type
.long 71 # DW_AT_type
.byte 4 # Abbrev [4] 0x40:0x6 DW_TAG_subrange_type
.long 78 # DW_AT_type
.byte 3 # DW_AT_count
.byte 0 # End Of Children Mark
.byte 5 # Abbrev [5] 0x47:0x7 DW_TAG_base_type
.long .Linfo_string3 # DW_AT_name
.byte 6 # DW_AT_encoding
.byte 1 # DW_AT_byte_size
.byte 6 # Abbrev [6] 0x4e:0x7 DW_TAG_base_type
.long .Linfo_string4 # DW_AT_name
.byte 8 # DW_AT_byte_size
.byte 7 # DW_AT_encoding
.byte 7 # Abbrev [7] 0x55:0x8 DW_TAG_subprogram
.long .Linfo_string5 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.byte 1 # DW_AT_inline
.byte 8 # Abbrev [8] 0x5d:0x59 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 87
# DW_AT_GNU_all_call_sites
.long .Linfo_string7 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
# DW_AT_prototyped
.long 205 # DW_AT_type
# DW_AT_external
.byte 9 # Abbrev [9] 0x76:0xf DW_TAG_formal_parameter
.long .Ldebug_loc0 # DW_AT_location
.long .Linfo_string9 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 205 # DW_AT_type
.byte 9 # Abbrev [9] 0x85:0xf DW_TAG_formal_parameter
.long .Ldebug_loc1 # DW_AT_location
.long .Linfo_string10 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 212 # DW_AT_type
.byte 10 # Abbrev [10] 0x94:0x14 DW_TAG_inlined_subroutine
.long 85 # DW_AT_abstract_origin
.quad .Ltmp2 # DW_AT_low_pc
.long .Ltmp5-.Ltmp2 # DW_AT_high_pc
.byte 1 # DW_AT_call_file
.byte 9 # DW_AT_call_line
.byte 5 # DW_AT_call_column
.byte 11 # Abbrev [11] 0xa8:0xd DW_TAG_GNU_call_site
.long 182 # DW_AT_abstract_origin
.quad .Ltmp4 # DW_AT_low_pc
.byte 0 # End Of Children Mark
.byte 12 # Abbrev [12] 0xb6:0xd DW_TAG_subprogram
.long .Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
# DW_AT_prototyped
# DW_AT_declaration
# DW_AT_external
.byte 13 # Abbrev [13] 0xbd:0x5 DW_TAG_formal_parameter
.long 195 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 14 # Abbrev [14] 0xc3:0x5 DW_TAG_pointer_type
.long 200 # DW_AT_type
.byte 15 # Abbrev [15] 0xc8:0x5 DW_TAG_const_type
.long 71 # DW_AT_type
.byte 5 # Abbrev [5] 0xcd:0x7 DW_TAG_base_type
.long .Linfo_string8 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 14 # Abbrev [14] 0xd4:0x5 DW_TAG_pointer_type
.long 217 # DW_AT_type
.byte 14 # Abbrev [14] 0xd9:0x5 DW_TAG_pointer_type
.long 71 # DW_AT_type
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 15.0.7 " # string offset=0
.Linfo_string1:
.asciz "unreachable.c" # string offset=69
.Linfo_string2:
.asciz "." # string offset=83
.Linfo_string3:
.asciz "char" # string offset=85
.Linfo_string4:
.asciz "__ARRAY_SIZE_TYPE__" # string offset=90
.Linfo_string5:
.asciz "foo" # string offset=110
.Linfo_string6:
.asciz "puts" # string offset=114
.Linfo_string7:
.asciz "main" # string offset=119
.Linfo_string8:
.asciz "int" # string offset=124
.Linfo_string9:
.asciz "argc" # string offset=128
.Linfo_string10:
.asciz "argv" # string offset=133
.section .debug_line,"",@progbits
.Lline_table_start0:

484
bolt/test/X86/dwarf5-deleted-range.s Normal file
View File

@ -0,0 +1,484 @@
# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %s -o %tmain.o
# RUN: %clang %cflags -no-pie %s -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections
# RUN: llvm-dwarfdump --show-children --name=main --debug-info %t.bolt \
# RUN: | FileCheck %s
# CHECK: DW_TAG_inlined_subroutine
# CHECK: DW_AT_low_pc
# CHECK-SAME: 0x0000000000000000
# CHECK: DW_TAG_call_site
# CHECK: DW_AT_call_return_pc
# CHECK-SAME: 0x0000000000000000
## Test that llvm-bolt correctly updates DIEs corresponding to deleted code.
# Test case built from the following source using:
#
# clang -O2 -g -gdwarf-5 ...
#
# Assembly modified with "je" -> "jmp" to introduce unreachable block.
#
# extern void puts(const char *);
#
# static void foo() {
# puts("hi");
# }
#
# int main(int argc, char **argv) {
# if (argc)
# foo();
# return 0;
# }
.text
.file "unreachable.c"
.file 0 "." "unreachable.c" md5 0xd268d8460ea246544a440d4d42235947
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.loc 0 7 0 # unreachable.c:7:0
.cfi_startproc
# %bb.0:
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
.loc 0 8 7 prologue_end # unreachable.c:8:7
testl %edi, %edi
.Ltmp0:
.loc 0 8 7 is_stmt 0 # unreachable.c:8:7
jmp .LBB0_2
.Ltmp1:
# %bb.1:
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
pushq %rax
.cfi_def_cfa_offset 16
.Ltmp2:
.loc 0 4 3 is_stmt 1 # unreachable.c:4:3
movl $.L.str, %edi
.Ltmp3:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
callq puts
.Ltmp4:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 0 0 3 is_stmt 0 # unreachable.c:0:3
addq $8, %rsp
.Ltmp5:
.cfi_def_cfa_offset 8
.LBB0_2:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 0 10 3 is_stmt 1 # unreachable.c:10:3
xorl %eax, %eax
retq
.Ltmp6:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.type .L.str,@object # @.str
.section .rodata.str1.1,"aMS",@progbits,1
.L.str:
.asciz "hi"
.size .L.str, 3
.section .debug_loclists,"",@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 2 # Offset entry count
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.long .Ldebug_loc1-.Lloclists_table_base0
.Ldebug_loc0:
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp3-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp3-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 85 # super-register DW_OP_reg5
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_loc1:
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp4-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 84 # DW_OP_reg4
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp4-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 84 # DW_OP_reg4
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_list_header_end0:
.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
.ascii "\214\001" # DW_AT_loclists_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 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 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 1 # DW_TAG_array_type
.byte 1 # DW_CHILDREN_yes
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 33 # DW_TAG_subrange_type
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 55 # DW_AT_count
.byte 11 # DW_FORM_data1
.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 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 6 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.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 32 # DW_AT_inline
.byte 33 # DW_FORM_implicit_const
.byte 1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 8 # 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 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.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 39 # DW_AT_prototyped
.byte 25 # DW_FORM_flag_present
.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 9 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 34 # DW_FORM_loclistx
.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 10 # Abbreviation Code
.byte 29 # DW_TAG_inlined_subroutine
.byte 0 # DW_CHILDREN_no
.byte 49 # DW_AT_abstract_origin
.byte 19 # DW_FORM_ref4
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 88 # DW_AT_call_file
.byte 11 # DW_FORM_data1
.byte 89 # DW_AT_call_line
.byte 11 # DW_FORM_data1
.byte 87 # DW_AT_call_column
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 11 # Abbreviation Code
.byte 72 # DW_TAG_call_site
.byte 0 # DW_CHILDREN_no
.byte 127 # DW_AT_call_origin
.byte 19 # DW_FORM_ref4
.byte 125 # DW_AT_call_return_pc
.byte 27 # DW_FORM_addrx
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 12 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.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 39 # DW_AT_prototyped
.byte 25 # DW_FORM_flag_present
.byte 60 # DW_AT_declaration
.byte 25 # DW_FORM_flag_present
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 13 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 14 # 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 15 # Abbreviation Code
.byte 38 # DW_TAG_const_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:0x95 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 12 # 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 1 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.long .Lloclists_table_base0 # DW_AT_loclists_base
.byte 2 # Abbrev [2] 0x27:0xa DW_TAG_variable
.long 49 # DW_AT_type
.byte 0 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 0
.byte 3 # Abbrev [3] 0x31:0xc DW_TAG_array_type
.long 61 # DW_AT_type
.byte 4 # Abbrev [4] 0x36:0x6 DW_TAG_subrange_type
.long 65 # DW_AT_type
.byte 3 # DW_AT_count
.byte 0 # End Of Children Mark
.byte 5 # Abbrev [5] 0x3d:0x4 DW_TAG_base_type
.byte 3 # DW_AT_name
.byte 6 # DW_AT_encoding
.byte 1 # DW_AT_byte_size
.byte 6 # Abbrev [6] 0x41:0x4 DW_TAG_base_type
.byte 4 # DW_AT_name
.byte 8 # DW_AT_byte_size
.byte 7 # DW_AT_encoding
.byte 7 # Abbrev [7] 0x45:0x4 DW_TAG_subprogram
.byte 5 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
# DW_AT_inline
.byte 8 # Abbrev [8] 0x49:0x35 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 87
# DW_AT_call_all_calls
.byte 7 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
# DW_AT_prototyped
.long 146 # DW_AT_type
# DW_AT_external
.byte 9 # Abbrev [9] 0x58:0x9 DW_TAG_formal_parameter
.byte 0 # DW_AT_location
.byte 9 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 146 # DW_AT_type
.byte 9 # Abbrev [9] 0x61:0x9 DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 10 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 150 # DW_AT_type
.byte 10 # Abbrev [10] 0x6a:0xd DW_TAG_inlined_subroutine
.long 69 # DW_AT_abstract_origin
.byte 2 # DW_AT_low_pc
.long .Ltmp5-.Ltmp2 # DW_AT_high_pc
.byte 0 # DW_AT_call_file
.byte 9 # DW_AT_call_line
.byte 5 # DW_AT_call_column
.byte 11 # Abbrev [11] 0x77:0x6 DW_TAG_call_site
.long 126 # DW_AT_call_origin
.byte 3 # DW_AT_call_return_pc
.byte 0 # End Of Children Mark
.byte 12 # Abbrev [12] 0x7e:0xa DW_TAG_subprogram
.byte 6 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
# DW_AT_prototyped
# DW_AT_declaration
# DW_AT_external
.byte 13 # Abbrev [13] 0x82:0x5 DW_TAG_formal_parameter
.long 136 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 14 # Abbrev [14] 0x88:0x5 DW_TAG_pointer_type
.long 141 # DW_AT_type
.byte 15 # Abbrev [15] 0x8d:0x5 DW_TAG_const_type
.long 61 # DW_AT_type
.byte 5 # Abbrev [5] 0x92:0x4 DW_TAG_base_type
.byte 8 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 14 # Abbrev [14] 0x96:0x5 DW_TAG_pointer_type
.long 155 # DW_AT_type
.byte 14 # Abbrev [14] 0x9b:0x5 DW_TAG_pointer_type
.long 61 # DW_AT_type
.byte 0 # End Of Children Mark
.Ldebug_info_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 15.0.7 " # string offset=0
.Linfo_string1:
.asciz "unreachable.c" # string offset=69
.Linfo_string2:
.asciz "." # string offset=83
.Linfo_string3:
.asciz "char" # string offset=85
.Linfo_string4:
.asciz "__ARRAY_SIZE_TYPE__" # string offset=90
.Linfo_string5:
.asciz "foo" # string offset=110
.Linfo_string6:
.asciz "puts" # string offset=114
.Linfo_string7:
.asciz "main" # string offset=119
.Linfo_string8:
.asciz "int" # string offset=124
.Linfo_string9:
.asciz "argc" # string offset=128
.Linfo_string10:
.asciz "argv" # string offset=133
.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 .L.str
.quad .Lfunc_begin0
.quad .Ltmp2
.quad .Ltmp4
.Ldebug_addr_end0:
.section .debug_line,"",@progbits
.Lline_table_start0: