Re: Compilation flags in libgfortran

2013-10-19 Thread Igor Zamyatin
Yeah, I can try to do benchmarking with such optset instead of O3. Thanks, Igor On Thu, Oct 17, 2013 at 2:19 PM, Richard Biener wrote: > On Wed, Oct 16, 2013 at 12:22 PM, Kyrill Tkachov > wrote: >> On 16/10/13 10:37, pins...@gmail.com wrote: >>>> >>>&g

Re: Compilation flags in libgfortran

2013-10-16 Thread Igor Zamyatin
Yeah, this is my point exactly. Atom case seems just triggered that fact. On Wed, Oct 16, 2013 at 2:22 PM, Kyrill Tkachov wrote: > On 16/10/13 10:37, pins...@gmail.com wrote: >>> >>> On Oct 15, 2013, at 6:58 AM, Igor Zamyatin wrote: >>> Hi All! >>>

Re: Compilation flags in libgfortran

2013-10-16 Thread Igor Zamyatin
Thanks a lot for the explanation! I can take care of the benchmarking but only on Intel hardware... Do you think that possble changes according those results would be acceptable? Thanks, Igor On Tue, Oct 15, 2013 at 11:46 PM, Janne Blomqvist wrote: > On Tue, Oct 15, 2013 at 4:58 PM, I

Compilation flags in libgfortran

2013-10-15 Thread Igor Zamyatin
Hi All! Is there any particular reason that matmul* modules from libgfortran are compiled with -O2 -ftree-vectorize? I see some regressions on Atom processor after r202980 (http://gcc.gnu.org/ml/gcc-cvs/2013-09/msg00846.html) Why not just use O3 for those modules? Thanks, Igor

Wrong code for i686 target with -O3 -flto

2013-07-22 Thread Igor Zamyatin
Hi All! Unfortunately now the compiler generates wrong code for i686 target when options -O3 and -flto are used. It started more than a month ago and reflected in PR57602. Such combination of options could be quite important at least from the performance point of view. Since there was almost no

Tree loop if conversion at O2

2012-09-20 Thread Igor Zamyatin
Hi All! Is there any particular reason why tree loop if conversion (tree-if-conv.c) isn't enabled by default on O2 (as far as I can see it's true for any platforms)? Thanks, Igor

Pta_flags enum overflow in i386.c

2011-07-13 Thread Igor Zamyatin
Hi All! As you may see pta_flags enum in i386.c is almost full. So there is a risk of overflow in quite near future. Comment in source code advises "widen struct pta flags" which is now defined as unsigned. But it looks not optimal. What will be the most proper solution for this problem? Thanks