test/MC/X86/AlignedBundling/single-inst-bundling.s

   1 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro %s -o - \
   2 # RUN:   | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-OPT %s
   3 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro -mc-relax-all %s -o - \
   4 # RUN:   | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-RELAX %s
   5
   6 # Test simple NOP insertion for single instructions.
   7
   8   .text
   9 foo:
  10   # Will be bundle-aligning to 16 byte boundaries
  11   .bundle_align_mode 4
  12   pushq   %rbp
  13   pushq   %r14
  14   pushq   %rbx
  15
  16   movl    %edi, %ebx
  17   callq   bar
  18   movl    %eax, %r14d
  19
  20   imull   $17, %ebx, %ebp
  21 # This imull is 3 bytes long and should have started at 0xe, so two bytes
  22 # of nop padding are inserted instead and it starts at 0x10
  23 # CHECK:          nop
  24 # CHECK-NEXT:     10: imull
  25
  26   movl    %ebx, %edi
  27   callq   bar
  28   cmpl    %r14d, %ebp
  29 # CHECK-RELAX:   nopl
  30   jle     .L_ELSE
  31 # Due to the padding that's inserted before the addl, the jump target
  32 # becomes farther by one byte.
  33 # CHECK-OPT:     jle 5
  34 # CHECK-RELAX:   jle 7
  35
  36   addl    %ebp, %eax
  37 # CHECK-OPT:     nop
  38 # CHECK-OPT-NEXT:20: addl
  39 # CHECK-RELAX:   26: addl
  40
  41   jmp     .L_RET
  42 .L_ELSE:
  43   imull   %ebx, %eax
  44 .L_RET:
  45   ret
  46
  47 # Just sanity checking that data fills don't drive bundling crazy
  48   .data
  49   .byte 40
  50   .byte 98
  51
  52