Hi,
While trying to optimize pixman, I noticed that gcc is unable to
recognize that 'while (n >= 1)' can often be simplified to 'if (n >=
1)'. Consider the following example, where there are loops that
operate on larger amounts of data and smaller loops that deal with
small or unaligned data.
int
hello,
your ad:
http://www.sansregrets.com/classifieds/
thank you.
Snapshot gcc-4.6-20110520 is now available on
ftp://gcc.gnu.org/pub/gcc/snapshots/4.6-20110520/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 4.6 SVN branch
with the following options: svn://gcc.gnu.org/svn/gcc/branches
On 05/19/11 01:32, Richard Sandiford wrote:
> Paul Koning writes:
>> It looks like the machinery that picks MIPS branch-likely instructions
>> (on processors that don't object to them) is driven purely by their
>> delay slot annul properties and not at all by branch probability.
>
> Unfortunately
On 05/19/11 13:01, Paul Koning wrote:
>
> On May 19, 2011, at 6:41 AM, Paul Koning wrote:
>
>>
>> On May 19, 2011, at 3:32 AM, Richard Sandiford wrote:
>>
>>> Paul Koning writes:
...
>>>
2. In the delay slot fill machinery (reorg.c), I don't see how a
target can supply hooks to ad
Camo Johnson writes:
> I have some trouble dealing with delay slots. The problem is that our
> architecture can't handle branch instructions using registers which have been
> changed in the previous instruction. So a delay slot is needed.
> The difficult part is, that this delay slot is only ne
On Fri, May 20, 2011 at 08:27, Basile Starynkevitch
wrote:
>> What is your definition of induction variable?
>
> The one which is used by graphite.
Ok, then you can match against the scalar evolution of a variable:
the evolution of your variable should be of the form "{a, +, 1}_x"
with "x" the nu
Hello,
I have some trouble dealing with delay slots. The problem is that our
architecture can't handle branch instructions using registers which have been
changed in the previous instruction. So a delay slot is needed.
The difficult part is, that this delay slot is only needed if the same regist
On Thu, 19 May 2011 09:52:11 -0500
Sebastian Pop wrote:
> On Thu, May 19, 2011 at 09:21, Basile Starynkevitch
> wrote:
[...]
> > How should I find the induction variable?
>
> What is your definition of induction variable?
The one which is used by graphite.
> My definitions are:
> - every vari
