Core2 and Corei7 tuning patches for review

[H.J. Lu]

On Tue, Oct 19, 2010 at 5:02 AM, Maxim Kuvyrkov <maxim@codesourcery.com> wrote:
> On 10/19/10 3:57 PM, H.J. Lu wrote:
>>
>> On Tue, Oct 19, 2010 at 4:21 AM, Maxim Kuvyrkov<maxim@codesourcery.com>
>>  wrote:
>>>
>>> I'll be posting Core2 and Corei7 tuning patches in this thread for
>>> review.
>>>
>>> Last week I posted benchmark results and analysis which show impact of
>>> individual changes on the performance [*].  In this thread I'll be asking
>>> for review of some of those patches that positively affect performance.
>>>
>>> [*] http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01318.html
>>>
>>
>> Did you run SPEC CPU 2006 on 64bit Core i7? It failed to compile
>> 400.perlbench:
>>
>> gcc -c -o pp_hot.o -DSPEC_CPU -DNDEBUG -DPERL_CORE  -O3 -funroll-loops
>> -ffast-math -mtune=corei7       -DSPEC_CPU_LP64  -DSPEC_CPU_LINUX_X64
>> -fno-strict-aliasing       perly.c
>> perly.c: In function 'Perl_yyparse':
>> perly.c:2531:1: internal compiler error: in
>> core2_first_cycle_multipass_issue, at config/i386/i386.c:21775
>
> Which patch set are you testing (the initial, or the one I sent later)?  I
> fixed this or a very similar ICE in the later set of patches.

I tested:

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01318.html

This is the only set sent to gcc-patches. Please send me the updated
set of changes. The last set you sent me directly has patches which
just cancel each other:

0023-issue_rate-4.patch
0019-Set-issue_rate-to-3.patch

I'd like to test the whole set first since it takes several days to run
SPEC CPU 2K/2006.

Thanks.


-- 
H.J.