bolt/test/X86/keep-nops.s

   1 ## Check that BOLT preserves NOP instructions of different sizes correctly.
   2
   3 # REQUIRES: system-linux
   4
   5 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
   6 # RUN: ld.lld %t.o -o %t.exe -q
   7 # RUN: llvm-bolt %t.exe -o %t.bolt.exe --keep-nops --relocs --print-finalized \
   8 # RUN:   |& FileCheck --check-prefix=CHECK-BOLT %s
   9 # RUN: llvm-objdump -d %t.bolt.exe | FileCheck %s
  10
  11   .text
  12   .globl _start
  13   .type _start,@function
  14 _start:
  15   .cfi_startproc
  16   .nops 1
  17   .nops 2
  18   .nops 3
  19   .nops 4
  20   .nops 5
  21   .nops 6
  22   .nops 7
  23   .nops 8
  24   .nops 9
  25   .nops 10
  26   .nops 11
  27   .nops 12
  28   .nops 13
  29   .nops 14
  30   .nops 15
  31
  32 # CHECK: <_start>:
  33 # CHECK-NEXT: 90
  34 # CHECK-NEXT: 66 90
  35 # CHECK-NEXT: 0f 1f 00
  36 # CHECK-NEXT: 0f 1f 40 00
  37 # CHECK-NEXT: 0f 1f 44 00 00
  38 # CHECK-NEXT: 66 0f 1f 44 00 00
  39 # CHECK-NEXT: 0f 1f 80 00 00 00 00
  40 # CHECK-NEXT: 0f 1f 84 00 00 00 00 00
  41 # CHECK-NEXT: 66 0f 1f 84 00 00 00 00 00
  42 # CHECK-NEXT: 66 2e 0f 1f 84 00 00 00 00 00
  43 # CHECK-NEXT: 66 66 2e 0f 1f 84 00 00 00 00 00
  44 # CHECK-NEXT: 66 66 66 2e 0f 1f 84 00 00 00 00 00
  45 # CHECK-NEXT: 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
  46 # CHECK-NEXT: 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
  47 # CHECK-NEXT: 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
  48
  49 # CHECK-BOLT:       Size: 1
  50 # CHECK-BOLT-NEXT:  Size: 2
  51 # CHECK-BOLT-NEXT:  Size: 3
  52 # CHECK-BOLT-NEXT:  Size: 4
  53 # CHECK-BOLT-NEXT:  Size: 5
  54 # CHECK-BOLT-NEXT:  Size: 6
  55 # CHECK-BOLT-NEXT:  Size: 7
  56 # CHECK-BOLT-NEXT:  Size: 8
  57 # CHECK-BOLT-NEXT:  Size: 9
  58 # CHECK-BOLT-NEXT:  Size: 10
  59 # CHECK-BOLT-NEXT:  Size: 11
  60 # CHECK-BOLT-NEXT:  Size: 12
  61 # CHECK-BOLT-NEXT:  Size: 13
  62 # CHECK-BOLT-NEXT:  Size: 14
  63 # CHECK-BOLT-NEXT:  Size: 15
  64
  65 # Needed for relocation mode.
  66   .reloc 0, R_X86_64_NONE
  67
  68   .size _start, .-_start
  69   .cfi_endproc