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RE: GCC optimizes integer overflow: bug or feature?
- From: Andrew Pinski <pinskia at gmail dot com>
- To: Dave Korn <dave dot korn at artimi dot com>
- Cc: 'Denis Vlasenko' <vda dot linux at googlemail dot com>, 'Paul Brook' <paul at codesourcery dot com>, gcc at gcc dot gnu dot org, 'Andrew Haley' <aph at redhat dot com>, 'Paolo Bonzini' <bonzini at gnu dot org>, bug-gnulib at gnu dot org
- Date: Fri, 22 Dec 2006 09:17:15 -0800
- Subject: RE: GCC optimizes integer overflow: bug or feature?
- References: <005101c725eb$bce0a650$a501a8c0@CAM.ARTIMI.COM>
On Fri, 2006-12-22 at 17:08 +0000, Dave Korn wrote:
> Misaligned accesses *kill* your performance!
Maybe on x86, but on PPC, at least for the (current) Cell's PPU
misaligned accesses for most cases unaligned are optimal.
Thanks,
Andrew Pinski