In the existing implementation we first did a bounds check in generated
code, and then called a simple C++ function to do the actual copying.
With this CL now we pass the WasmInstanceObject to the C++ function in
addition to the memory.copy parameters. Thereby we can do the bounds
check in C++, which is much easier, less error prone, and which also
speeds up code generation and reduces code size. Performance should not
be worse, because we were already doing the call to C++ anyways.

R=clemensb@chromium.org

Bug: v8:10281
Change-Id: I24488d92056f0b5df27a61783a274895bd37cc24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2093434
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66655}