Speeding up v3 basic_string

[Jason Merrill]

>>>>> "Benjamin" == Benjamin Kosnik <bkoz@redhat.com> writes:

>> I won't argue, but consider the length of time the "interesting" tests
>> take to run.  If performance drops, I'd rather know about it because
>> the numbers look worse, not because people start complaining about the
>> automated regression tester only finishing a cycle once a day.  :-)

> I don't know how to do this. Isn't gcc running Stepanov as part of 'make 
> check' now?

I don't think so, though it should.

> You'd think that same infrastructure could be ripped off for libstdc++.

I don't think you really need extra infrastructure; the test can compare
relative speeds of different operations internally.  That's about all you
can do without maintaining an external database, but you can do most of
what you want that way.

Jason