The vast majority of operations increases the stack size by at most one.
Many opcode (e.g. all unary and binary operations) never grow the stack
at all. Still, for every "push" operation, they check whether the
storage for the vector that holds the stack values needs to grow.

This CL avoids those redundant checks by ensuring that there is space
for at least one more stack element before decoding each instruction.

By centralizing this check, we not only improve performance, but also
reduce code size significantly (~49 kB on x64 release).

R=thibaudm@chromium.org

Bug: chromium:1096565, v8:10933
Change-Id: I986dcac734b986d1ce953b7ec3bde8ad31b4f2b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2431525
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70177}