bolt/test/X86/nop-function.s

   1 ## Check that BOLT preserves nop instruction if it's the only instruction
   2 ## in a function.
   3
   4 # REQUIRES: system-linux
   5
   6 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
   7 # RUN: ld.lld %t.o -o %t.exe -q
   8 # RUN: llvm-bolt %t.exe -o %t.bolt.exe --relocs=0
   9 # RUN: llvm-objdump -d %t.bolt.exe | FileCheck %s
  10
  11   .text
  12   .globl nop_function
  13   .type nop_function,@function
  14 nop_function:
  15   .cfi_startproc
  16   nop
  17 # CHECK: <nop_function>:
  18 # CHECK-NEXT: nop
  19
  20   .size nop_function, .-nop_function
  21   .cfi_endproc
  22
  23
  24   .globl _start
  25   .type _start,@function
  26 _start:
  27   .cfi_startproc
  28   call nop_function
  29   .size _start, .-_start
  30   .cfi_endproc