lld/test/COFF/weak-antidep-chain.test

   1 REQUIRES: x86
   2 RUN: split-file %s %t.dir && cd %t.dir
   3
   4 RUN: llvm-mc -filetype=obj -triple=x86_64-windows chain-bad.s -o chain-bad.obj
   5 RUN: llvm-mc -filetype=obj -triple=x86_64-windows chain-bad2.s -o chain-bad2.obj
   6 RUN: llvm-mc -filetype=obj -triple=x86_64-windows globals-bad.s -o globals-bad.obj
   7 RUN: llvm-mc -filetype=obj -triple=x86_64-windows chain-good.s -o chain-good.obj
   8 RUN: llvm-mc -filetype=obj -triple=x86_64-windows chain-good2.s -o chain-good2.obj
   9 RUN: llvm-mc -filetype=obj -triple=x86_64-windows globals-good.s -o globals-good.obj
  10
  11 Temporary anti-dependency chains are allowed as long as they are broken by non-alias symbols.
  12
  13 RUN: lld-link -machine:amd64 -dll -noentry -out:test.dll chain-good.obj globals-good.obj
  14 RUN: lld-link -machine:amd64 -dll -noentry -out:test.dll chain-good2.obj globals-good.obj
  15
  16 Chaining of anti-dependency symbols is not allowed.
  17
  18 RUN: not lld-link -machine:amd64 -dll -noentry -out:test.dll chain-bad.obj globals-bad.obj 2>&1 \
  19 RUN:              | FileCheck -check-prefix=ANTIDEP %s
  20 RUN: not lld-link -machine:amd64 -dll -noentry -out:test.dll chain-bad2.obj globals-bad.obj 2>&1 \
  21 RUN:              | FileCheck -check-prefix=ANTIDEP %s
  22
  23 ANTIDEP:      lld-link: error: undefined symbol: sym
  24 ANTIDEP-NEXT: >>> referenced by chain-bad
  25
  26 #--- chain-bad.s
  27     .weak_anti_dep sym
  28 .set sym,sym2
  29     .weak_anti_dep sym2
  30 .set sym2,sym3
  31
  32 #--- chain-bad2.s
  33     .weak_anti_dep sym2
  34 .set sym2,sym3
  35     .weak sym
  36 .set sym,sym2
  37
  38 #--- globals-bad.s
  39     .section .test,"r"
  40     .global sym3
  41 .set sym3,3
  42
  43 #--- chain-good.s
  44     .weak_anti_dep sym
  45 .set sym,sym2
  46     .weak_anti_dep sym2
  47 .set sym2,sym3
  48     .weak_anti_dep sym3
  49 .set sym3,sym4
  50     .weak_anti_dep sym4
  51
  52 #--- chain-good2.s
  53     .weak_anti_dep sym
  54 .set sym,sym2
  55     .weak_anti_dep sym2
  56 .set sym2,sym3
  57     .weak_anti_dep sym3
  58 .set sym3,weak_sym
  59     .weak weak_sym
  60 .set weak_sym,sym4
  61     .weak_anti_dep sym4
  62
  63 #--- globals-good.s
  64     .section .test,"r"
  65     .global sym2
  66 .set sym2,2
  67     .global sym4
  68 .set sym4,4