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

   1 # RUN: llvm-mc -filetype=obj -triple x86_64 --x86-align-branch-boundary=32 --x86-align-branch=jcc+jmp+indirect+call+ret %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
   2
   3   # Exercise cases where mixed kinds of branch are asked to be aligned.
   4
   5   .text
   6   .globl  labeled_mixed_test1
   7 labeled_mixed_test1:
   8   .p2align  5
   9   .rept 30
  10   int3
  11   .endr
  12   # This call should have started at 0x1e and ends at 0x23, so two bytes of
  13   # padding are inserted before it.
  14   # CHECK:    20:          callq
  15   call  bar
  16   .rept 28
  17   int3
  18   .endr
  19   # If the previous call was not aligned, this jmp should have started at 0x3f
  20   # and need two bytes of padding. After the two bytes of padding are inserted
  21   # for the call, this jmp starts at 0xa1 and does not need padding.
  22   # CHECK:    41:          jmp
  23   jmp  *%rax
  24
  25   .globl  labeled_mixed_test2
  26 labeled_mixed_test2:
  27   .p2align  5
  28   .rept 30
  29   int3
  30   .endr
  31   # This jne should have started at 0x7e, so two bytes of padding are inserted
  32   # before it.
  33   # CHECK:    80:          jne
  34   jne bar
  35   .rept 28
  36   int3
  37   .endr
  38   # If the previous jne was not aligned, this jmp should have started at 0x3c.
  39   # After the two bytes of padding are inserted for the jne, this jmp should
  40   # have started at 0x9e, so two bytes of padding are inserted and it starts at
  41   # 0xa0.
  42   # CHECK:    a0:          jmp
  43   jmp bar
  44
  45   .globl  labeled_mixed_test3
  46 labeled_mixed_test3:
  47   .p2align 5
  48   .type   bar,@function
  49 bar:
  50   # CHECK:    c0:          retq
  51   retq