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|
# 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 --use-old-text
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt > %t.txt
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe >> %t.txt
# RUN: cat %t.txt | FileCheck --check-prefix=CHECK %s
# CHECK: DW_TAG_inlined_subroutine
# CHECK: DW_AT_low_pc [DW_FORM_addr] (0x[[#%.16x,ADDR:]])
# CHECK: DW_AT_high_pc [DW_FORM_data4] (0x00000000)
# CHECK: DW_TAG_inlined_subroutine
# CHECK-NOT: DW_AT_low_pc [DW_FORM_addr] (0x[[#ADDR]])
# CHECK: DW_AT_high_pc [DW_FORM_data4] (0x00000000)
# Testing BOLT handles correctly when size of DW_AT_inlined_subroutine is 0.
# In other words DW_AT_high_pc is 0 or DW_AT_low_pc == DW_AT_high_pc.
# Modified assembly manually to set DW_AT_high_pc to 0.
# clang++ -g2 -gdwarf-4 main.cpp -O1 -S -o main4.s
# static int helper(int i) {
# return ++i;
# }
# void may_not_exist(void) __attribute__ ((weak));
# int main(int argc, char *argv[]) {
# if (may_not_exist)
# may_not_exist();
# int j = 0;
# [[clang::always_inline]] j = helper(argc);
# return j;
# }
.text
.file "main.cpp"
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.file 1 "." "main.cpp"
.loc 1 5 0 # main.cpp:5:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
pushq %rbx
.cfi_def_cfa_offset 16
.cfi_offset %rbx, -16
movl %edi, %ebx
.Ltmp0:
.loc 1 6 7 prologue_end # main.cpp:6:7
cmpq $0, _Z13may_not_existv@GOTPCREL(%rip)
je .LBB0_2
.Ltmp1:
# %bb.1: # %if.then
#DEBUG_VALUE: main:argc <- $ebx
#DEBUG_VALUE: main:argv <- $rsi
.loc 1 7 5 # main.cpp:7:5
callq _Z13may_not_existv@PLT
.Ltmp2:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.LBB0_2: # %if.end
#DEBUG_VALUE: main:argc <- $ebx
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
#DEBUG_VALUE: main:j <- 0
#DEBUG_VALUE: helper:i <- $ebx
.loc 1 2 10 # main.cpp:2:10
incl %ebx
.Ltmp3:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
#DEBUG_VALUE: helper:i <- $ebx
#DEBUG_VALUE: main:j <- $ebx
.loc 1 10 3 # main.cpp:10:3
movl %ebx, %eax
popq %rbx
.Ltmp4:
#DEBUG_VALUE: helper:i <- $eax
#DEBUG_VALUE: main:j <- $eax
.cfi_def_cfa_offset 8
retq
.Ltmp5:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.section .debug_loc,"",@progbits
.Ldebug_loc0:
.quad .Lfunc_begin0-.Lfunc_begin0
.quad .Ltmp1-.Lfunc_begin0
.short 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.quad .Ltmp1-.Lfunc_begin0
.quad .Ltmp3-.Lfunc_begin0
.short 1 # Loc expr size
.byte 83 # super-register DW_OP_reg3
.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 .Ltmp2-.Lfunc_begin0
.short 1 # Loc expr size
.byte 84 # DW_OP_reg4
.quad .Ltmp2-.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
.Ldebug_loc2:
.quad .Ltmp2-.Lfunc_begin0
.quad .Ltmp3-.Lfunc_begin0
.short 3 # Loc expr size
.byte 17 # DW_OP_consts
.byte 0 # 0
.byte 159 # DW_OP_stack_value
.quad .Ltmp3-.Lfunc_begin0
.quad .Ltmp4-.Lfunc_begin0
.short 1 # Loc expr size
.byte 83 # super-register DW_OP_reg3
.quad .Ltmp4-.Lfunc_begin0
.quad .Lfunc_end0-.Lfunc_begin0
.short 1 # Loc expr size
.byte 80 # super-register DW_OP_reg0
.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 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 110 # DW_AT_linkage_name
.byte 14 # DW_FORM_strp
.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 32 # DW_AT_inline
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.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 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 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 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 6 # 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 7 # Abbreviation Code
.byte 52 # DW_TAG_variable
.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 8 # Abbreviation Code
.byte 29 # DW_TAG_inlined_subroutine
.byte 1 # DW_CHILDREN_yes
.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 9 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 49 # DW_AT_abstract_origin
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 10 # 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 11 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.byte 110 # DW_AT_linkage_name
.byte 14 # DW_FORM_strp
.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 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 12 # 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 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0xcf 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:0x1c DW_TAG_subprogram
.long .Linfo_string3 # DW_AT_linkage_name
.long .Linfo_string4 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 70 # DW_AT_type
.byte 1 # DW_AT_inline
.byte 3 # Abbrev [3] 0x3a:0xb DW_TAG_formal_parameter
.long .Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 70 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 4 # Abbrev [4] 0x46:0x7 DW_TAG_base_type
.long .Linfo_string5 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 5 # Abbrev [5] 0x4d:0x70 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_string9 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
.long 70 # DW_AT_type
# DW_AT_external
.byte 6 # Abbrev [6] 0x66:0xf DW_TAG_formal_parameter
.long .Ldebug_loc0 # DW_AT_location
.long .Linfo_string10 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
.long 70 # DW_AT_type
.byte 6 # Abbrev [6] 0x75:0xf DW_TAG_formal_parameter
.long .Ldebug_loc1 # DW_AT_location
.long .Linfo_string11 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
.long 200 # DW_AT_type
.byte 7 # Abbrev [7] 0x84:0xf DW_TAG_variable
.long .Ldebug_loc2 # DW_AT_location
.long .Linfo_string13 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 8 # DW_AT_decl_line
.long 70 # DW_AT_type
.byte 8 # Abbrev [8] 0x93:0x1c DW_TAG_inlined_subroutine
.long 42 # DW_AT_abstract_origin
.quad .Ltmp2 # DW_AT_low_pc
.long 0 # DW_AT_high_pc Manually modified
.byte 1 # DW_AT_call_file
.byte 9 # DW_AT_call_line
.byte 32 # DW_AT_call_column
.byte 9 # Abbrev [9] 0xa7:0x7 DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 83
.long 58 # DW_AT_abstract_origin
.byte 0 # End Of Children Mark
.byte 10 # Abbrev [10] 0xaf:0xd DW_TAG_GNU_call_site
.long 189 # DW_AT_abstract_origin
.quad .Ltmp2 # DW_AT_low_pc
.byte 0 # End Of Children Mark
.byte 11 # Abbrev [11] 0xbd:0xb DW_TAG_subprogram
.long .Linfo_string7 # DW_AT_linkage_name
.long .Linfo_string8 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
# DW_AT_declaration
# DW_AT_external
.byte 12 # Abbrev [12] 0xc8:0x5 DW_TAG_pointer_type
.long 205 # DW_AT_type
.byte 12 # Abbrev [12] 0xcd:0x5 DW_TAG_pointer_type
.long 210 # DW_AT_type
.byte 4 # Abbrev [4] 0xd2:0x7 DW_TAG_base_type
.long .Linfo_string12 # 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,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 16.0.0" # string offset=0
.Linfo_string1:
.asciz "main.cpp" # string offset=105
.Linfo_string2:
.asciz "." # string offset=114
.Linfo_string3:
.asciz "_ZL6helperi" # string offset=152
.Linfo_string4:
.asciz "helper" # string offset=164
.Linfo_string5:
.asciz "int" # string offset=171
.Linfo_string6:
.asciz "i" # string offset=175
.Linfo_string7:
.asciz "_Z13may_not_existv" # string offset=177
.Linfo_string8:
.asciz "may_not_exist" # string offset=196
.Linfo_string9:
.asciz "main" # string offset=210
.Linfo_string10:
.asciz "argc" # string offset=215
.Linfo_string11:
.asciz "argv" # string offset=220
.Linfo_string12:
.asciz "char" # string offset=225
.Linfo_string13:
.asciz "j" # string offset=230
.weak _Z13may_not_existv
.ident "clang version 16.0.0"
.section ".note.GNU-stack","",@progbits
.addrsig
.addrsig_sym _Z13may_not_existv
.section .debug_line,"",@progbits
.Lline_table_start0:
|
