R=clemensh@chromium.org
TEST=cctest/test-disasm-x64

Change-Id: I704537886b80701921eeae918a1f867f42ad305b
Reviewed-on: https://chromium-review.googlesource.com/c/1437289Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59127}