lld/test/ELF/comdat-local-signature.s

   1 # REQUIRES: x86
   2 ## COMDAT groups are deduplicated by the name of the signature symbol.
   3 ## The local/global status is not part of the equation.
   4
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   6 # RUN: ld.lld %t.o %t.o -o %t
   7 # RUN: llvm-readelf -s -x .zero -x .comdat %t | FileCheck %s
   8
   9 # CHECK:      Type   Bind  Vis     Ndx     Name
  10 # CHECK-NEXT: NOTYPE LOCAL DEFAULT UND
  11 # CHECK-NEXT: NOTYPE LOCAL DEFAULT [[#A:]] zero
  12 # CHECK-NEXT: NOTYPE LOCAL DEFAULT [[#]]   comdat
  13 # CHECK-NEXT: NOTYPE LOCAL DEFAULT [[#A]]  zero
  14 # CHECK-NOT:  {{.}}
  15
  16 ## Non-GRP_COMDAT groups are never deduplicated.
  17 # CHECK:      Hex dump of section '.zero':
  18 # CHECK-NEXT: [[#%x,]] 0202
  19
  20 ## GRP_COMDAT groups are deduplicated.
  21 # CHECK:      Hex dump of section '.comdat':
  22 # CHECK-NEXT: [[#%x,]] 01 .{{$}}
  23
  24 .section .zero,"aG",@progbits,zero
  25 zero:
  26   .byte 2
  27
  28 .section .comdat,"aG",@progbits,comdat,comdat
  29 comdat:
  30   .byte 1