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