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Re: BUG: GCC-4.4.x changes the function frame on some functions
- From: Andi Kleen <andi at firstfloor dot org>
- To: Richard Guenther <richard dot guenther at gmail dot com>
- Cc: "H. Peter Anvin" <hpa at zytor dot com>, Thomas Gleixner <tglx at linutronix dot de>, Ingo Molnar <mingo at elte dot hu>, LKML <linux-kernel at vger dot kernel dot org>, Andrew Morton <akpm at linux-foundation dot org>, Heiko Carstens <heiko dot carstens at de dot ibm dot com>, feng dot tang at intel dot com, "Fr??d??ric Weisbecker" <fweisbec at gmail dot com>, Steven Rostedt <rostedt at goodmis dot org>, Peter Zijlstra <peterz at infradead dot org>, jakub at redhat dot com, gcc at gcc dot gnu dot org
- Date: Thu, 19 Nov 2009 18:37:11 +0100
- Subject: Re: BUG: GCC-4.4.x changes the function frame on some functions
- References: <alpine.LFD.2.00.0911181933540.24119@localhost.localdomain> <tip-887a29f59b93cf54e21814869a4ab6e80b6fa623@git.kernel.org> <20091119072040.GA23579@elte.hu> <alpine.LFD.2.00.0911191053390.24119@localhost.localdomain> <alpine.LFD.2.00.0911191423190.24119@localhost.localdomain> <alpine.LFD.2.00.0911191607440.24119@localhost.localdomain> <4B056820.1050104@zytor.com> <84fc9c000911190749y294381a2q16f4547991525cee@mail.gmail.com>
Richard Guenther <richard.guenther@gmail.com> writes:
>
> It's likely because you have long long vars on the stack which is
> faster when they are aligned.
It's not faster for 32bit.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.