Tracking down gcc-4.0 performance regressions

[R Hill]

René Rebe wrote:
> I think this massive -Os regressions on C++ code as experienced in tramp3d and 
> botan should be investigated. However I have not looked for filled PRs or 
> more recnt snapshots of 4.0 so far ...

Oh good, so it's not just me. ;)

I opened PR21314 a while back but ended up chickening out.  I'm really 
new to this and since they couldn't reproduce it I figured the problem 
was on my end and closed the report.  I also think it may be a dupe of 
PR21529, but I don't know enough to confirm that.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21314
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21529

--de.