This uses the Smi-fast-path that was added for i32 values also for f32
and f64. The code was generalized to do the smi-to-wasm-type and
float64-to-wasm-type conversion dependent on the type, and keep the rest
generic.

R=jkummerow@chromium.org

Bug: v8:10070
Change-Id: I42b021dcc99755883cf003579c730675e6d93ff6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1965577Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65539}