llvm/test/MC/ELF/section-combine.s

   1 ## Sections are differentiated by the quadruple
   2 ## (section_name, group_name, unique_id, link_to_symbol_name).
   3 ## Sections sharing the same quadruple are combined into one section.
   4
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t
   6 # RUN: llvm-readelf -x .foo %t | FileCheck %s
   7
   8 # CHECK:      Hex dump of section '.foo':
   9 # CHECK-NEXT: 0x00000000 00
  10 # CHECK:      Hex dump of section '.foo':
  11 # CHECK-NEXT: 0x00000000 0102
  12 # CHECK:      Hex dump of section '.foo':
  13 # CHECK-NEXT: 0x00000000 03
  14 # CHECK:      Hex dump of section '.foo':
  15 # CHECK-NEXT: 0x00000000 0405
  16 # CHECK:      Hex dump of section '.foo':
  17 # CHECK-NEXT: 0x00000000 06
  18 # CHECK:      Hex dump of section '.foo':
  19 # CHECK-NEXT: 0x00000000 0708
  20
  21 foo:
  22 bar:
  23
  24 ## foo and bar are in the same section. However, a section referencing foo
  25 ## is considered different from a section referencing bar.
  26 .section .foo,"o",@progbits,foo
  27 .byte 0
  28
  29 .section .foo,"o",@progbits,bar
  30 .byte 1
  31 .section .foo,"o",@progbits,bar
  32 .byte 2
  33
  34 .section .foo,"o",@progbits,bar,unique,0
  35 .byte 3
  36
  37 .section .foo,"o",@progbits,bar,unique,1
  38 .byte 4
  39 .section .foo,"o",@progbits,bar,unique,1
  40 .byte 5
  41
  42 .section .foo,"Go",@progbits,bar,comdat0,comdat,unique,1
  43 .byte 6
  44
  45 .section .foo,"Go",@progbits,bar,comdat1,comdat,unique,1
  46 .byte 7
  47 .section .foo,"oG",@progbits,bar,comdat1,comdat,unique,1
  48 .byte 8