------- Comment #6 from hubicka at ucw dot cz 2010-04-25 23:42 -------
Subject: Re: [4.4/4.5/4.6 Regression] Performance
degradation for simple fibonacci numbers calculation due to extra
stack alignment
> where the only difference is different loop alignment and keeping the
> stack 16-bytes aligned. Indeed we get the same speed as 4.1 when
> building with -mpreffered-stack-boundary=2. Why do we bother to
> keep the stack aligned for leaf functions?
We should not. Probably fallout of stack alignment patches? I will check out
later.
Honza
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43884
