On Fri, 24 May 2024 06:31:36 GMT, Daniel Jeliński <djelin...@openjdk.org> wrote:
>> Thanks for finding this. It was ignorance on my part as I thought the xorq >> would have logic to not emit the REX prefix if not necessary, but it >> doesn't. Fixed. > > Right, it seems to surprise people. There's a lot of preexisting uses of xorq > / xorptr to zero a register. I think it would make sense to implement this > logic in xorq. I can do this if others agree. Good idea. I vote yes. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/16753#discussion_r1613506958
