lld/test/ELF/comdat.s

   1 // REQUIRES: x86
   2 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
   3 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/comdat.s -o %t2.o
   4 // RUN: ld.lld -shared %t.o %t2.o -o %t
   5 // RUN: llvm-objdump -d %t | FileCheck %s
   6 // RUN: llvm-readelf -S -s %t | FileCheck --check-prefix=READ %s
   7
   8 // Check that we don't crash with --gc-section and that we print a list of
   9 // reclaimed sections on stderr.
  10 // RUN: ld.lld --gc-sections --print-gc-sections -shared %t.o %t.o %t2.o -o %t \
  11 // RUN:   2>&1 | FileCheck --check-prefix=GC %s
  12 // GC: removing unused section {{.*}}.o:(.text)
  13 // GC: removing unused section {{.*}}.o:(.text3)
  14 // GC: removing unused section {{.*}}.o:(.text)
  15 // GC: removing unused section {{.*}}.o:(.text)
  16
  17 .globl foo
  18         .section        .text2,"axG",@progbits,foo,comdat,unique,0
  19 foo:
  20         nop
  21
  22 // CHECK: Disassembly of section .text2:
  23 // CHECK-EMPTY:
  24 // CHECK-NEXT: <foo>:
  25 // CHECK-NEXT:   nop
  26 // CHECK-NOT: nop
  27
  28         .section bar, "ax"
  29         call foo
  30
  31 // CHECK: Disassembly of section bar:
  32 // CHECK-EMPTY:
  33 // CHECK-NEXT: <bar>:
  34 // CHECK-NEXT:   callq  {{.*}} <foo@plt>
  35
  36 .weak zed
  37 zed:
  38         .section .text3,"axG",@progbits,zed,comdat,unique,0
  39
  40 # READ: .text2 PROGBITS {{.*}} AX
  41 # READ: .text3 PROGBITS {{.*}} AX
  42
  43 # SYM:  NOTYPE LOCAL  DEFAULT UND
  44 # SYM:  NOTYPE LOCAL  HIDDEN  [[#]] _DYNAMIC
  45 # SYM:  NOTYPE GLOBAL DEFAULT [[#]] foo
  46 # SYM:  NOTYPE GLOBAL DEFAULT [[#]] zed
  47 # SYM:  NOTYPE GLOBAL DEFAULT UND   abc