We are working on getting Liftoff feature complete. Eventually, bailout
should only happen if experimental features are enabled. Until we are
there, we also need to allow some more bailouts, which should be removed
in the near future.

This CL adds a check for expected bailout reasons. The new function
serves as a burndown list of issues to be fixed.

Drive-by: Make some methods constexpr such that they can be used in
static assertions.

R=ahaas@chromium.org

Change-Id: I5d3cd8f49a30d01f89ac6cf5321e1314b63eba40
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629513
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72127}