# This tests the computation of the scope bytes covered by local variables. In
# particular, the case when the variable starts in the middle of the enclosing
# scope, and the compile unit has both DW_AT_ranges and DW_AT_low_pc attributes.
# RUN: llvm-mc -triple x86_64-pc-linux %s -filetype=obj -o %t
# RUN: llvm-dwarfdump --statistics %t | FileCheck %s
# CHECK: "sum_all_local_vars(#bytes in parent scope)": 12,
# CHECK: "sum_all_local_vars(#bytes in parent scope covered by DW_AT_location)": 8,
.text
# Add padding to ensure the function does not start at address zero.
.zero 256
f: # @f
.Lf_begin:
.zero 4
.Lx_begin:
.zero 8
.Lf_end:
.section .debug_ranges,"",@progbits
.Ldebug_ranges:
.quad .Lf_begin
.quad .Lf_end
.quad 0
.quad 0
.section .debug_loc,"",@progbits
.Ldebug_loc:
.quad .Lx_begin
.quad .Lf_end
.short 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.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 8 # DW_FORM_string
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 85 # DW_AT_ranges
.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 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 3 # DW_AT_name
.byte 8 # DW_FORM_string
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # 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 8 # DW_FORM_string
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.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 8 # DW_FORM_string
.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 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin:
.long .Ldebug_info_end-.Ldebug_info_start # Length of Unit
.Ldebug_info_start:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x64 DW_TAG_compile_unit
.asciz "Hand-written DWARF" # DW_AT_producer
.quad 0 # DW_AT_low_pc
.long .Ldebug_ranges # DW_AT_ranges
.byte 2 # Abbrev [2] 0x2a:0x28 DW_TAG_subprogram
.quad .Lf_begin # DW_AT_low_pc
.long .Lf_end-.Lf_begin # DW_AT_high_pc
.asciz "f" # DW_AT_name
.byte 3 # Abbrev [3] 0x43:0xe DW_TAG_variable
.long .Ldebug_loc # DW_AT_location
.asciz "x" # DW_AT_name
.long .Lint # DW_AT_type
.byte 0 # End Of Children Mark
.Lint:
.byte 5 # Abbrev [5] 0x67:0x7 DW_TAG_base_type
.asciz "int" # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end:
Codebase Browser
llvm