Comment-only change.


git-svn-id: svn://svn.valgrind.org/vex@2934 8f6e269a-dfd6-0310-a8e1-e2731360e62c
Add support for four IROps that Memcheck generates on arm64, that
the front end doesn't generate.


git-svn-id: svn://svn.valgrind.org/vex@2935 8f6e269a-dfd6-0310-a8e1-e2731360e62c