test/MC/X86/AlignedBundling/long-nop-pad.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 %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 %s
   5
   6 # Test that long nops are generated for padding where possible.
   7
   8   .text
   9 foo:
  10   .bundle_align_mode 5
  11
  12 # This callq instruction is 5 bytes long
  13   .bundle_lock align_to_end
  14   callq   bar
  15   .bundle_unlock
  16 # To align this group to a bundle end, we need a two 10-byte NOPs and a 7-byte NOP.
  17 # CHECK:        0:  nop
  18 # CHECK-NEXT:   a:  nop
  19 # CHECK-NEXT:   14: nop
  20 # CHECK:   1b: callq
  21
  22 # This push instruction is 1 byte long
  23   .bundle_lock align_to_end
  24   push %rax
  25   .bundle_unlock
  26 # To align this group to a bundle end, we need three 10-byte NOPs, and a 1-byte.
  27 # CHECK:        20:  nop
  28 # CHECK-NEXT:   2a:  nop
  29 # CHECK-NEXT:   34:  nop
  30 # CHECK-NEXT:   3e:  nop
  31 # CHECK-NEXT:   3f: pushq