When debugging CSA builtins, it's useful to place a 'DebugBreak();' in the
code. However, the instruction scheduler re-orders instructions around it which
can be a little frustrating.

Change-Id: Ic4288bbc24e78987c7cbf3616e80cf5915f474c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1916602Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#64963}