The code for reading dill files via dart has a "debugPath" list that is
continously added and removed to in order to be able to debug what went
wrong if something goes wrong (e.g. if the dill file is invalid or the
reading code is wrong etc).
This CL wraps the updates of this list in assert so that we don't pay
for what we don't use in the general case. In a debug setting we can get
the functionality back via --checked.
On a benchmark of 10 runs, the time it takes to read vm_outline.dill 100
times after a 2 second warmup changes by -2.77% +/- 1.21%.
Bug:
Change-Id: I643b8dd778972621046fe76b536fd95e9bb66d1c
Reviewed-on: https://dart-review.googlesource.com/18820
Reviewed-by: Peter von der Ahé <ahe@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
Jens Johansen
ca877c964f