llvm/test/MC/X86/align-branch-necessary.s

   1 # RUN: llvm-mc -filetype=obj -triple x86_64 --x86-align-branch-boundary=32 --x86-align-branch=fused+jcc+indirect+call+ret %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
   2
   3   # Check if no instruction crosses or is against the boundary,
   4   # there will be no extra padding.
   5
   6   .text
   7   .globl  foo
   8   .p2align  5
   9 foo:
  10   .p2align  5
  11   .rept 24
  12   int3
  13   .endr
  14   # CHECK:    18:          js
  15   js foo
  16
  17   .p2align  5
  18   .rept 24
  19   int3
  20   .endr
  21   # CHECK:    38:          jmp
  22   jmp foo
  23
  24   .p2align  5
  25   .rept 24
  26   int3
  27   .endr
  28   # CHECK:    58:          jmpq    *%rcx
  29   jmp  *%rcx
  30
  31
  32   .p2align  5
  33   .rept 24
  34   int3
  35   .endr
  36   # CHECK:    78:          callq
  37   call  foo
  38
  39   .p2align  5
  40   .rept 27
  41   int3
  42   .endr
  43   # CHECK:    9b:          retq    $0
  44   ret $0
  45
  46
  47   .p2align  5
  48   .rept 21
  49   int3
  50   .endr
  51   # CHECK:    b5:          cmpq    %rax, %rbp
  52   # CHECK:    b8:          je
  53   cmp  %rax, %rbp
  54   je  foo