lld/test/ELF/gdb-index-icf.s

   1 # REQUIRES: x86
   2 ## Test that the address range contributed by an ICF folded function is identical
   3 ## to that of the folded-in function. Not considering ICF may lead to an address
   4 ## range whose low address equals the start address of the output section.
   5
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   7 # RUN: ld.lld --gdb-index --icf=all -Ttext=0x1000 %t.o -o %t
   8 # RUN: llvm-dwarfdump --gdb-index %t | FileCheck %s
   9
  10 # CHECK:      Address area offset = 0x38, has 2 entries:
  11 # CHECK-NEXT:   Low/High address = [0x1001, 0x1002) (Size: 0x1), CU id = 0
  12 # CHECK-NEXT:   Low/High address = [0x1001, 0x1002) (Size: 0x1), CU id = 1
  13
  14 .text
  15 nop
  16
  17 .section .text.0,"ax"
  18 .Lfunc_begin0:
  19   ret
  20 .Lfunc_end0:
  21
  22 .section .text.1,"ax"
  23 .Lfunc_begin1:
  24   ret
  25 .Lfunc_end1:
  26
  27 .section  .debug_abbrev,"",@progbits
  28   .byte  1                         # Abbreviation Code
  29   .byte  65                        # DW_TAG_type_unit
  30   .byte  0                         # DW_CHILDREN_no
  31   .byte  0                         # EOM(1)
  32   .byte  0                         # EOM(2)
  33
  34   .byte  2                         # Abbreviation Code
  35   .byte  17                        # DW_TAG_compile_unit
  36   .byte  0                         # DW_CHILDREN_no
  37   .byte  17                        # DW_AT_low_pc
  38   .byte  1                         # DW_FORM_addr
  39   .byte  18                        # DW_AT_high_pc
  40   .byte  6                         # DW_FORM_data4
  41   .byte  0                         # EOM(1)
  42   .byte  0                         # EOM(2)
  43
  44   .byte  0                         # EOM(3)
  45
  46 .section  .debug_info,"",@progbits
  47 .Lcu_begin0:
  48   .long .Lcu_end0-.Lcu_begin0-4    # Length of Unit
  49   .short 5                         # DWARF version number
  50   .byte  1                         # DWARF Unit Type
  51   .byte  8                         # Address Size
  52   .long  .debug_abbrev             # Offset Into Abbrev. Section
  53   .byte  2                         # Abbrev [2] DW_TAG_compile_unit
  54   .quad  .Lfunc_begin0             # DW_AT_low_pc
  55   .long  .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
  56 .Lcu_end0:
  57
  58 .Lcu_begin1:
  59   .long .Lcu_end1-.Lcu_begin1-4    # Length of Unit
  60   .short 5                         # DWARF version number
  61   .byte  1                         # DWARF Unit Type
  62   .byte  8                         # Address Size
  63   .long  .debug_abbrev             # Offset Into Abbrev. Section
  64   .byte  2                         # Abbrev [2] DW_TAG_compile_unit
  65   .quad  .Lfunc_begin1             # DW_AT_low_pc
  66   .long  .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
  67 .Lcu_end1: