test/MC/X86/AlignedBundling/pad-align-to-bundle-end.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 some variations of padding to the end of a bundle.
   7
   8   .text
   9 foo:
  10   .bundle_align_mode 4
  11
  12 # Each of these callq instructions is 5 bytes long
  13   callq   bar
  14   callq   bar
  15   .bundle_lock align_to_end
  16   callq   bar
  17   .bundle_unlock
  18 # To align this group to a bundle end, we need a 1-byte NOP.
  19 # CHECK:        a:  nop
  20 # CHECK-NEXT:   b: callq
  21
  22   callq   bar
  23   callq   bar
  24   .bundle_lock align_to_end
  25   callq   bar
  26   callq   bar
  27   .bundle_unlock
  28 # Here we have to pad until the end of the *next* boundary because
  29 # otherwise the group crosses a boundary.
  30 # CHECK:      1a: nop
  31 # The nop sequence may be implemented as one instruction or many, but if
  32 # it's one instruction, that instruction cannot itself cross the boundary.
  33 # CHECK:      20: nop
  34 # CHECK-NEXT: 26: callq
  35 # CHECK-NEXT: 2b: callq