Right -- I missed Richard's previous email regarding the options.
Thanks,
David
On Fri, Aug 27, 2010 at 5:21 PM, Andrew Pinski wrote:
> On Fri, Aug 27, 2010 at 5:12 PM, Xinliang David Li wrote:
>> Briefly looked at it -- the trunk gcc also regresses a lot compared to
>> the binary you attached
On Fri, Aug 27, 2010 at 5:12 PM, Xinliang David Li wrote:
> Briefly looked at it -- the trunk gcc also regresses a lot compared to
> the binary you attached. (To match your binary, also added
> -mfpmath=387 -m32 options)
>
> Two problems:
>
> 1) more register spills in the trunk version -- the old
Briefly looked at it -- the trunk gcc also regresses a lot compared to
the binary you attached. (To match your binary, also added
-mfpmath=387 -m32 options)
Two problems:
1) more register spills in the trunk version -- the old compiler seems
more effective in using fp stack registers;
2) the comp
On Fri, 2010-08-27 at 17:09 +0200, Richard Guenther wrote:
> On Fri, Aug 27, 2010 at 5:02 PM, Corey Kasten
> wrote:
> > On Fri, 2010-08-27 at 06:50 -0700, Nathan Froyd wrote:
> >> On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote:
> >> > I find that the executable compiled on system A r
On Fri, Aug 27, 2010 at 5:02 PM, Corey Kasten
wrote:
> On Fri, 2010-08-27 at 06:50 -0700, Nathan Froyd wrote:
>> On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote:
>> > I find that the executable compiled on system A runs faster (on both
>> > systems) than the executable compiled on sys
On Fri, 2010-08-27 at 06:50 -0700, Nathan Froyd wrote:
> On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote:
> > I find that the executable compiled on system A runs faster (on both
> > systems) than the executable compiled on system B (on both system), by a
> > factor about approximately
On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote:
> I find that the executable compiled on system A runs faster (on both
> systems) than the executable compiled on system B (on both system), by a
> factor about approximately 4 times. I have attempted to play with the
> GCC optimizer fla
On Fri, Aug 27, 2010 at 6:44 AM, Corey Kasten
wrote:
> Hello all,
>
> I have two computers with two different versions of GCC. Otherwise the
> two systems have identical hardware. I have a processor and memory
> intensive benchmark program which I compile on both systems and I cannot
> understand
