https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65536
--- Comment #26 from Jan Hubicka <hubicka at ucw dot cz> --- this is a proof of concept patch that makes streamer in to collect locations into a "cache" and apply them in sorted order (looking up correct max_column hints) at the end of handling of a given section. It also has facility to throw away locations of trees that are freed. while sorting at stream in time is not cool, it does not show top in the profiles and memory use of the cache is actually dominated by other stuff we read, so this seems to work quite well in practice. Main problem would be if someone copied/used the locator before cache is applied. This helps to get all lines and most of carrets right on firefox. I killed my Chromium tree so can't test it there (Martin, perhaps you could try?) I did not have much time today to test the patch. It also saves quite a lot of memory, about 400MB on firefox I guess. Honza
