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114 lines
5.0 KiB
114 lines
5.0 KiB
# This tests the computation of the scope bytes covered by local variables. In
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# particular, the case when the variable starts in the middle of the enclosing
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# scope, and the compile unit has both DW_AT_ranges and DW_AT_low_pc attributes.
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# RUN: llvm-mc -triple x86_64-pc-linux %s -filetype=obj -o %t
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# RUN: llvm-dwarfdump --statistics %t | FileCheck %s
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# CHECK: "sum_all_local_vars(#bytes in parent scope)": 12,
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# CHECK: "sum_all_local_vars(#bytes in parent scope covered by DW_AT_location)": 8,
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.text
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# Add padding to ensure the function does not start at address zero.
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.zero 256
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f: # @f
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.Lf_begin:
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.zero 4
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.Lx_begin:
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.zero 8
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.Lf_end:
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.section .debug_ranges,"",@progbits
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.Ldebug_ranges:
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.quad .Lf_begin
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.quad .Lf_end
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.quad 0
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.quad 0
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.section .debug_loc,"",@progbits
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.Ldebug_loc:
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.quad .Lx_begin
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.quad .Lf_end
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.short 1 # Loc expr size
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.byte 85 # super-register DW_OP_reg5
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.quad 0
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.quad 0
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.section .debug_abbrev,"",@progbits
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 1 # DW_CHILDREN_yes
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.byte 37 # DW_AT_producer
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.byte 8 # DW_FORM_string
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 85 # DW_AT_ranges
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.byte 23 # DW_FORM_sec_offset
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 2 # Abbreviation Code
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.byte 46 # DW_TAG_subprogram
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.byte 1 # DW_CHILDREN_yes
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 18 # DW_AT_high_pc
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.byte 6 # DW_FORM_data4
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.byte 3 # DW_AT_name
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.byte 8 # DW_FORM_string
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 3 # Abbreviation Code
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.byte 52 # DW_TAG_variable
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.byte 0 # DW_CHILDREN_no
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.byte 2 # DW_AT_location
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.byte 23 # DW_FORM_sec_offset
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.byte 3 # DW_AT_name
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.byte 8 # DW_FORM_string
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 5 # Abbreviation Code
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.byte 36 # DW_TAG_base_type
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 8 # DW_FORM_string
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.byte 62 # DW_AT_encoding
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.byte 11 # DW_FORM_data1
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.byte 11 # DW_AT_byte_size
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.byte 11 # DW_FORM_data1
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0 # EOM(3)
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.section .debug_info,"",@progbits
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.Lcu_begin:
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.long .Ldebug_info_end-.Ldebug_info_start # Length of Unit
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.Ldebug_info_start:
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.short 4 # DWARF version number
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.long .debug_abbrev # Offset Into Abbrev. Section
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.byte 8 # Address Size (in bytes)
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.byte 1 # Abbrev [1] 0xb:0x64 DW_TAG_compile_unit
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.asciz "Hand-written DWARF" # DW_AT_producer
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.quad 0 # DW_AT_low_pc
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.long .Ldebug_ranges # DW_AT_ranges
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.byte 2 # Abbrev [2] 0x2a:0x28 DW_TAG_subprogram
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.quad .Lf_begin # DW_AT_low_pc
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.long .Lf_end-.Lf_begin # DW_AT_high_pc
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.asciz "f" # DW_AT_name
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.byte 3 # Abbrev [3] 0x43:0xe DW_TAG_variable
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.long .Ldebug_loc # DW_AT_location
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.asciz "x" # DW_AT_name
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.long .Lint # DW_AT_type
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.byte 0 # End Of Children Mark
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.Lint:
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.byte 5 # Abbrev [5] 0x67:0x7 DW_TAG_base_type
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.asciz "int" # DW_AT_name
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.byte 5 # DW_AT_encoding
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.byte 4 # DW_AT_byte_size
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.byte 0 # End Of Children Mark
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.Ldebug_info_end:
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