[tree-ssa mudflap] slow startup

[Eyal Lebedinsky]

Since the changes early this month Everything is very slow. I now
checked and I see that the whole slowdown in before my main() is
entered. It seems that everything is registered up-front when the
DLLs are opened.

Was there a change in this area?

With -mode-nop a trivial program starts fast:
real    0m0.025s
user    0m0.020s
sys     0m0.000s

Without any options, build from 20030603-210427:
real    0m0.779s
user    0m0.740s
sys     0m0.010s

Without any options, build from 20030626-102123:
real    0m7.089s
user    0m7.030s
sys     0m0.050s


This is a compile time issue, using different libmudflap
has very little effect.

A natural suspect is the wrappers patch, however I was running
with it for a long while before it was accepted and did not see
any significant slowdown.

--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>