On Sun, 17 Feb 2013, Gerald Pfeifer wrote:
> On Thu, 31 Jan 2013, Richard Biener wrote:
> > +GCC now uses more a aggressive analysis to derive an upper bound for
>
> I think "a " should be omitted here.
Yes, that was fixed before commit.
> > +the number of iterations of loops using constraints
On Thu, 31 Jan 2013, Richard Biener wrote:
> +GCC now uses more a aggressive analysis to derive an upper bound for
I think "a " should be omitted here.
> +the number of iterations of loops using constraints imposed by language
> +standards. This may cause non-conforming programs to no longer wor
On Thu, 31 Jan 2013, Richard Biener wrote:
> On Wed, 30 Jan 2013, Pat Haugen wrote:
>
> > On 01/29/2013 04:53 AM, Richard Biener wrote:
> > > I'm curious about the affect of -fno-aggressive-loop-optimizations
> > > on SPEC CPU 2006 numbers (not curious enough to try for myself
> > > though). Bot
On Wed, 30 Jan 2013, Pat Haugen wrote:
> On 01/29/2013 04:53 AM, Richard Biener wrote:
> > I'm curious about the affect of -fno-aggressive-loop-optimizations
> > on SPEC CPU 2006 numbers (not curious enough to try for myself
> > though). Both on extra PASSes for official latest sources
> > (I hav
On 01/29/2013 04:53 AM, Richard Biener wrote:
I'm curious about the affect of -fno-aggressive-loop-optimizations
on SPEC CPU 2006 numbers (not curious enough to try for myself
though). Both on extra PASSes for official latest sources
(I have no access to those) and on performance.
The patch/opti
I just finished a clean bootstrap of r195576 with your patch.
I have used it to clean the XPASS of gfortran.dg/do_1.f90 for -O0
and -O1 with the following patch:
--- /opt/gcc/_clean/gcc/testsuite/gfortran.dg/do_1.f90 2012-10-18
20:35:25.0 +0200
+++ /opt/gcc/work/gcc/testsuite/gfortran.dg
The following patch adds -faggressive-loop-optimizations, enabled by
default, guarding the use of language constraints for number of
iteration analysis. Starting with GCC 4.8 we more aggressively
make use of iteration bounds derived from those constraints
which for example breaks SPEC CPU 2006 46
