lld/test/MachO/weak-definition-in-main-file.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 ## Test that a weak symbol in a direct .o file wins over
   5 ## a weak symbol in a .a file.
   6
   7 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
   8 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/weakfoo.s -o %t/weakfoo.o
   9
  10 # RUN: llvm-ar --format=darwin rcs %t/weakfoo.a %t/weakfoo.o
  11
  12 # PREFER-DIRECT-OBJECT-NOT: O __TEXT,weak __foo
  13
  14 # RUN: %lld -lSystem -o %t/out %t/weakfoo.a %t/test.o
  15 # RUN: llvm-objdump --syms %t/out | FileCheck %s --check-prefix=PREFER-DIRECT-OBJECT
  16
  17 #--- weakfoo.s
  18 .globl __baz
  19 __baz:
  20   ret
  21
  22 .section __TEXT,weak
  23 .weak_definition __foo
  24 .globl __foo
  25 __foo:
  26   ret
  27
  28 .subsections_via_symbols
  29
  30 #--- test.s
  31 .globl __foo
  32 .weak_definition __foo
  33 __foo:
  34   ret
  35
  36 .globl _main
  37 _main:
  38   # This pulls in weakfoo.a due to the __baz undef, but __foo should
  39   # still be resolved against the weak symbol in this file.
  40   callq __baz
  41   callq __foo
  42   ret
  43
  44 .subsections_via_symbols