# 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: