For Smi, we can avoid calling the ToNumber builtin, and also the
conversion to float and back. This adds some complexity, but greatly
improves performance for parameters that fit in a Smi.

R=jkummerow@chromium.org

Bug: v8:10070
Change-Id: Ic55f17e42ce52811296293f3cd218c850af42961
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1965576
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65525}