lld/test/MachO/weak-definition-order.s

   1 # REQUIRES: x86
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 ## This test demonstrates that when we have two weak symbols of the same type,
   5 ## we pick the one whose containing file appears earlier in the command-line
   6 ## invocation.
   7
   8 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
   9 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/weak1.s -o %t/weak1.o
  10 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/weak2.s -o %t/weak2.o
  11
  12 # RUN: %lld -lSystem -o %t/obj12 %t/weak1.o %t/weak2.o %t/test.o
  13 # RUN: llvm-objdump --syms %t/obj12 | FileCheck %s --check-prefix=WEAK1
  14 # RUN: %lld -lSystem -o %t/obj21 %t/weak2.o %t/weak1.o %t/test.o
  15 # RUN: llvm-objdump --syms %t/obj21 | FileCheck %s --check-prefix=WEAK2
  16
  17 # WEAK1: O __TEXT,weak1 _foo
  18 # WEAK2: O __TEXT,weak2 _foo
  19
  20 # RUN: %lld -dylib -install_name \
  21 # RUN:   @executable_path/libweak1.dylib %t/weak1.o -o %t/libweak1.dylib
  22 # RUN: %lld -dylib -install_name \
  23 # RUN:   @executable_path/libweak2.dylib %t/weak2.o -o %t/libweak2.dylib
  24
  25 # RUN: %lld -lSystem -o %t/dylib12 -L%t -lweak1 -lweak2 %t/test.o
  26 # RUN: llvm-objdump --macho --bind %t/dylib12 | FileCheck %s --check-prefix=DYLIB1
  27 # RUN: %lld -lSystem -o %t/dylib21 -L%t -lweak2 -lweak1 %t/test.o
  28 # RUN: llvm-objdump --macho --bind %t/dylib21 | FileCheck %s --check-prefix=DYLIB2
  29 # DYLIB1: __DATA   __la_symbol_ptr    0x{{[0-9a-f]*}} pointer 0 libweak1         _foo
  30 # DYLIB2: __DATA   __la_symbol_ptr    0x{{[0-9a-f]*}} pointer 0 libweak2         _foo
  31
  32 #--- weak1.s
  33 .globl _foo
  34 .weak_definition _foo
  35 .section __TEXT,weak1;
  36 _foo:
  37
  38 #--- weak2.s
  39 .globl _foo
  40 .weak_definition _foo
  41 .section __TEXT,weak2
  42 _foo:
  43
  44 #--- test.s
  45 .globl _main
  46 _main:
  47   callq _foo
  48   ret