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

   1 # RUN: llvm-mc -filetype=obj -triple x86_64 --x86-align-branch-boundary=32 --x86-align-branch=fused+jcc %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
   2
   3   # Exercise cases where fused instructions need to be aligned.
   4
   5   .text
   6   .globl  foo
   7 foo:
   8   .p2align  5
   9   .rept 30
  10   int3
  11   .endr
  12   # 'cmp  %rax, %rbp' is macro fused with 'jne foo',
  13   # so we need to align the pair.
  14   # CHECK:    20:          cmpq    %rax, %rbp
  15   # CHECK:    23:          jne
  16   cmp  %rax, %rbp
  17   jne foo
  18   int3
  19
  20   .p2align  5
  21   .rept 28
  22   int3
  23   .endr
  24   # 'cmp  %rax, %rbp' is fusible but can not fused with `jo foo`,
  25   # so we only need to align 'jo foo'.
  26   # CHECK:    5c:          cmpq    %rax, %rbp
  27   cmp  %rax, %rbp
  28   # CHECK:    60:          jo
  29   jo foo
  30   int3
  31
  32   .p2align  5
  33   .rept 26
  34   int3
  35   .endr
  36   # The second 'cmp  %rax, %rbp' is macro fused with 'jne foo'.
  37   cmp  %rax, %rbp
  38   # CHECK:    a0:          cmpq    %rax, %rbp
  39   # CHECK:    a3:          jne
  40   cmp  %rax, %rbp
  41   jne foo
  42   int3