IRA performance testing on Fortran

[David Edelsohn]

>>>>> FX  writes:

FX> The performance regression is mainly due to one testcase, induct,
FX> which is taking a 30% hit on IRA. If the performance of that one were
FX> the same with IRA than with the old allocator, the switch would be
FX> (for this benchmark) performance-neutral. So, I have investigated the
FX> case of induct, and I found that with the IRA branch compiler without
FX> -fira, it's already 30% slower than with trunk. So, is it an issue
FX> with the IRA branch, or has it just not been merged recently and we
FX> had a recent great improvement of induct on trunk? I'd appreciate if
FX> you could enlighten me on this point.

	The IRA branch has not been merged recently and does not include
many of Richi's recent alias analysis improvements.

David