lld/test/MachO/objc-classrefs-dedup.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/defs.s -o %t/defs.o
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/refs1.s -o %t/refs1.o
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/refs2.s -o %t/refs2.o
   6 # RUN: %lld -lSystem -dylib %t/defs.o -o %t/libdefs.dylib
   7 # RUN: %lld -lSystem -dylib --icf=all %t/refs1.o %t/refs2.o %t/libdefs.dylib -o %t/out
   8 # RUN: llvm-otool -o %t/out | FileCheck %s
   9
  10 ## Check that we only have 3 (unique) entries, of which two are bound at runtime
  11 ## (i.e. they are entries that have a static value of 0x0).
  12 # CHECK:       Contents of (__DATA,__objc_classrefs) section
  13 # CHECK-NEXT:  0000000000001008 0x0    _OBJC_CLASS_$_Foo
  14 # CHECK-NEXT:  0000000000001010 0x0    _OBJC_CLASS_$_Bar
  15 # CHECK-NEXT:  0000000000001018 0x1000 _OBJC_CLASS_$_Baz
  16 # CHECK-EMPTY:
  17
  18 #--- defs.s
  19 .globl _OBJC_CLASS_$_Foo, _OBJC_CLASS_$_Bar
  20 .section __DATA,__objc_data
  21 _OBJC_CLASS_$_Foo:
  22  .quad 123
  23
  24 _OBJC_CLASS_$_Bar:
  25  .quad 456
  26
  27 .subsections_via_symbols
  28
  29 #--- refs1.s
  30 .globl _OBJC_CLASS_$_Baz
  31
  32 .section __DATA,__objc_data
  33 _OBJC_CLASS_$_Baz:
  34  .quad 789
  35
  36 .section __DATA,__objc_classrefs
  37 .quad _OBJC_CLASS_$_Foo
  38 .quad _OBJC_CLASS_$_Bar
  39 .quad _OBJC_CLASS_$_Baz
  40 .quad _OBJC_CLASS_$_Baz
  41
  42 .subsections_via_symbols
  43
  44 #--- refs2.s
  45 .section __DATA,__objc_classrefs
  46 .quad _OBJC_CLASS_$_Foo
  47 .quad _OBJC_CLASS_$_Bar
  48
  49 .subsections_via_symbols