lld/test/MachO/objc-selrefs.s

   1 # REQUIRES: aarch64
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/explicit-selrefs-1.s -o %t/explicit-selrefs-1.o
   5 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/explicit-selrefs-2.s -o %t/explicit-selrefs-2.o
   6 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/implicit-selrefs.s -o %t/implicit-selrefs.o
   7
   8 # RUN: %lld -dylib -arch arm64 -lSystem -o %t/explicit-only-no-icf \
   9 # RUN:   %t/explicit-selrefs-1.o %t/explicit-selrefs-2.o
  10 # RUN: llvm-otool -vs __DATA __objc_selrefs %t/explicit-only-no-icf | \
  11 # RUN:   FileCheck %s --check-prefix=EXPLICIT-NO-ICF
  12
  13 ## NOTE: ld64 always dedups the selrefs unconditionally, but we only do it when
  14 ## ICF is enabled.
  15 # RUN: %lld -dylib -arch arm64 -lSystem -o %t/explicit-only-with-icf \
  16 # RUN:   %t/explicit-selrefs-1.o %t/explicit-selrefs-2.o
  17 # RUN: llvm-otool -vs __DATA __objc_selrefs %t/explicit-only-with-icf \
  18 # RUN:   | FileCheck %s --check-prefix=EXPLICIT-WITH-ICF
  19
  20 # SELREFS: Contents of (__DATA,__objc_selrefs) section
  21 # SELREFS-NEXT: __TEXT:__objc_methname:foo
  22 # SELREFS-NEXT: __TEXT:__objc_methname:bar
  23 # SELREFS-NEXT: __TEXT:__objc_methname:foo
  24 # SELREFS-NEXT: __TEXT:__objc_methname:length
  25 # SELREFS-EMPTY:
  26
  27 ## We don't yet support dedup'ing implicitly-defined selrefs.
  28 # RUN: %lld -dylib -arch arm64 -lSystem --icf=all -o %t/explicit-and-implicit \
  29 # RUN:   %t/explicit-selrefs-1.o %t/explicit-selrefs-2.o %t/implicit-selrefs.o
  30 # RUN: llvm-otool -vs __DATA __objc_selrefs %t/explicit-and-implicit \
  31 # RUN:   | FileCheck %s --check-prefix=EXPLICIT-AND-IMPLICIT
  32
  33 # EXPLICIT-NO-ICF:       Contents of (__DATA,__objc_selrefs) section
  34 # EXPLICIT-NO-ICF-NEXT:  __TEXT:__objc_methname:foo
  35 # EXPLICIT-NO-ICF-NEXT:  __TEXT:__objc_methname:bar
  36 # EXPLICIT-NO-ICF-NEXT:  __TEXT:__objc_methname:bar
  37 # EXPLICIT-NO-ICF-NEXT:  __TEXT:__objc_methname:foo
  38
  39 # EXPLICIT-WITH-ICF:      Contents of (__DATA,__objc_selrefs) section
  40 # EXPLICIT-WITH-ICF-NEXT: __TEXT:__objc_methname:foo
  41 # EXPLICIT-WITH-ICF-NEXT: __TEXT:__objc_methname:bar
  42
  43 # EXPLICIT-AND-IMPLICIT:      Contents of (__DATA,__objc_selrefs) section
  44 # EXPLICIT-AND-IMPLICIT-NEXT: __TEXT:__objc_methname:foo
  45 # EXPLICIT-AND-IMPLICIT-NEXT: __TEXT:__objc_methname:bar
  46 # NOTE: Ideally this wouldn't exist, but while it does it needs to point to the deduplicated string
  47 # EXPLICIT-AND-IMPLICIT-NEXT: __TEXT:__objc_methname:foo
  48 # EXPLICIT-AND-IMPLICIT-NEXT: __TEXT:__objc_methname:length
  49
  50 #--- explicit-selrefs-1.s
  51 .section  __TEXT,__objc_methname,cstring_literals
  52 lselref1:
  53   .asciz  "foo"
  54 lselref2:
  55   .asciz  "bar"
  56
  57 .section  __DATA,__objc_selrefs,literal_pointers,no_dead_strip
  58 .p2align  3
  59   .quad lselref1
  60   .quad lselref2
  61   .quad lselref2
  62
  63 #--- explicit-selrefs-2.s
  64 .section  __TEXT,__objc_methname,cstring_literals
  65 lselref1:
  66   .asciz  "foo"
  67
  68 .section  __DATA,__objc_selrefs,literal_pointers,no_dead_strip
  69 .p2align  3
  70   .quad lselref1
  71
  72 #--- implicit-selrefs.s
  73 .text
  74 .globl _objc_msgSend
  75 .p2align 2
  76 _objc_msgSend:
  77   ret
  78
  79 .p2align 2
  80 _sender:
  81   bl _objc_msgSend$length
  82   bl _objc_msgSend$foo
  83   ret