As there are not enough registers on ia32 to execute the platform-
independent code, the CL also adds ia32-specific code to
liftoff-compiler.cc. For this we first retrieve the memory index from
the stack, do a bounds check, and calculate the final address. Only
afterwards we pop all other values from the stack and pass them to the
platform-dependent code.

R=clemensb@chromium.org

Bug: v8:10108
Change-Id: I741266a9523c8b5c46acc0b29817fd143a75752e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2316305Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69047}