------- Comment #7 from hubicka at ucw dot cz 2010-04-25 23:43 -------
Subject: Re: [4.4/4.5/4.6 Regression] Performance
degradation for simple fibonacci numbers calculation due to extra
stack alignment
> The slowdown also happens on x86-64. Stack alignment checks
> leaf function. But I am sure if it detects tail-recursion.
> Is such information available to ix86_finalize_stack_realign_flags?
Tail recursion is recognized at gimple level, so rtl code should not be at all
bothered here.
Honza
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43884
