llvm/test/tools/llvm-dwarfdump/X86/statistics-base-address.s

   1 # This tests the computation of the scope bytes covered by local variables. In
   2 # particular, the case when the variable starts in the middle of the enclosing
   3 # scope, and the compile unit has both DW_AT_ranges and DW_AT_low_pc attributes.
   4
   5 # RUN: llvm-mc -triple x86_64-pc-linux %s -filetype=obj -o %t
   6 # RUN: llvm-dwarfdump --statistics %t | FileCheck %s
   7
   8 # CHECK: "sum_all_local_vars(#bytes in parent scope)": 12,
   9 # CHECK: "sum_all_local_vars(#bytes in parent scope covered by DW_AT_location)": 8,
  10
  11         .text
  12
  13 # Add padding to ensure the function does not start at address zero.
  14         .zero 256
  15
  16 f:                                      # @f
  17 .Lf_begin:
  18         .zero 4
  19 .Lx_begin:
  20         .zero 8
  21 .Lf_end:
  22
  23         .section        .debug_ranges,"",@progbits
  24 .Ldebug_ranges:
  25         .quad   .Lf_begin
  26         .quad   .Lf_end
  27         .quad   0
  28         .quad   0
  29
  30         .section        .debug_loc,"",@progbits
  31 .Ldebug_loc:
  32         .quad   .Lx_begin
  33         .quad   .Lf_end
  34         .short  1                       # Loc expr size
  35         .byte   85                      # super-register DW_OP_reg5
  36         .quad   0
  37         .quad   0
  38
  39
  40         .section        .debug_abbrev,"",@progbits
  41         .byte   1                       # Abbreviation Code
  42         .byte   17                      # DW_TAG_compile_unit
  43         .byte   1                       # DW_CHILDREN_yes
  44         .byte   37                      # DW_AT_producer
  45         .byte   8                       # DW_FORM_string
  46         .byte   17                      # DW_AT_low_pc
  47         .byte   1                       # DW_FORM_addr
  48         .byte   85                      # DW_AT_ranges
  49         .byte   23                      # DW_FORM_sec_offset
  50         .byte   0                       # EOM(1)
  51         .byte   0                       # EOM(2)
  52         .byte   2                       # Abbreviation Code
  53         .byte   46                      # DW_TAG_subprogram
  54         .byte   1                       # DW_CHILDREN_yes
  55         .byte   17                      # DW_AT_low_pc
  56         .byte   1                       # DW_FORM_addr
  57         .byte   18                      # DW_AT_high_pc
  58         .byte   6                       # DW_FORM_data4
  59         .byte   3                       # DW_AT_name
  60         .byte   8                       # DW_FORM_string
  61         .byte   0                       # EOM(1)
  62         .byte   0                       # EOM(2)
  63         .byte   3                       # Abbreviation Code
  64         .byte   52                      # DW_TAG_variable
  65         .byte   0                       # DW_CHILDREN_no
  66         .byte   2                       # DW_AT_location
  67         .byte   23                      # DW_FORM_sec_offset
  68         .byte   3                       # DW_AT_name
  69         .byte   8                       # DW_FORM_string
  70         .byte   73                      # DW_AT_type
  71         .byte   19                      # DW_FORM_ref4
  72         .byte   0                       # EOM(1)
  73         .byte   0                       # EOM(2)
  74         .byte   5                       # Abbreviation Code
  75         .byte   36                      # DW_TAG_base_type
  76         .byte   0                       # DW_CHILDREN_no
  77         .byte   3                       # DW_AT_name
  78         .byte   8                       # DW_FORM_string
  79         .byte   62                      # DW_AT_encoding
  80         .byte   11                      # DW_FORM_data1
  81         .byte   11                      # DW_AT_byte_size
  82         .byte   11                      # DW_FORM_data1
  83         .byte   0                       # EOM(1)
  84         .byte   0                       # EOM(2)
  85         .byte   0                       # EOM(3)
  86
  87         .section        .debug_info,"",@progbits
  88 .Lcu_begin:
  89         .long   .Ldebug_info_end-.Ldebug_info_start # Length of Unit
  90 .Ldebug_info_start:
  91         .short  4                       # DWARF version number
  92         .long   .debug_abbrev           # Offset Into Abbrev. Section
  93         .byte   8                       # Address Size (in bytes)
  94         .byte   1                       # Abbrev [1] 0xb:0x64 DW_TAG_compile_unit
  95         .asciz  "Hand-written DWARF"    # DW_AT_producer
  96         .quad   0                       # DW_AT_low_pc
  97         .long   .Ldebug_ranges          # DW_AT_ranges
  98         .byte   2                       # Abbrev [2] 0x2a:0x28 DW_TAG_subprogram
  99         .quad   .Lf_begin               # DW_AT_low_pc
 100         .long   .Lf_end-.Lf_begin       # DW_AT_high_pc
 101         .asciz  "f"                     # DW_AT_name
 102         .byte   3                       # Abbrev [3] 0x43:0xe DW_TAG_variable
 103         .long   .Ldebug_loc             # DW_AT_location
 104         .asciz  "x"                     # DW_AT_name
 105         .long   .Lint                   # DW_AT_type
 106         .byte   0                       # End Of Children Mark
 107 .Lint:
 108         .byte   5                       # Abbrev [5] 0x67:0x7 DW_TAG_base_type
 109         .asciz  "int"                   # DW_AT_name
 110         .byte   5                       # DW_AT_encoding
 111         .byte   4                       # DW_AT_byte_size
 112         .byte   0                       # End Of Children Mark
 113 .Ldebug_info_end: