Optimize FPUCanonicalizeNaN
Float Round reutrn qNan when input is Nan
FMaxMin return qNan with Nan inputs

Change-Id: I7568be3d27d030e49f292a956b3084b54bdf8577
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2814725
Commit-Queue: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74006}