https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Joost VandeVondele Joost.VandeVondele at mat dot ethz.ch changed:
What|Removed |Added
CC|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Steven Bosscher steven at gcc dot gnu.org changed:
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Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
vincenzo Innocente vincenzo.innocente at cern dot ch changed:
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Known to fail|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #26 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-11-30 09:13:08 UTC ---
using a minimal configuration like
./configure --prefix=/something --enable-languages=c,c++ --disable-multilib
--disable-bootstrap --enable-lto
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #21 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-11-29 09:54:49 UTC ---
My understanding is that we cannot count to see a min/max location pattern
vectorization in 4.7, isn't it?
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #22 from Jakub Jelinek jakub at gcc dot gnu.org 2011-11-29
09:58:40 UTC ---
I gave up on it, because it still needed lots of changes in the generic
vectorizer. Guess I can update the patch so that it at least applies, but
there is
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #23 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-11-29 10:10:06 UTC ---
a working patch could be useful to check performance and quality of the
generated ASM w.r.t. manually crafted soutions
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #24 from Jakub Jelinek jakub at gcc dot gnu.org 2011-11-29
14:46:59 UTC ---
Created attachment 25945
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=25945
gcc47-pr50374.patch
This updated patch applies (had to remove various parts
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #25 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-11-29 15:24:02 UTC ---
Thanks Jakub for the new patch.
Using it I get this: any Idea how to fix/avoid?
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #18 from Ira Rosen irar at il dot ibm.com 2011-09-22 07:51:35 UTC
---
(In reply to comment #16)
and -3.c fails with an ICE in the vectorizer, Ira,
could you look at that?
--- tree-vect-stmts.c 2011-09-22 09:48:34.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Jakub Jelinek jakub at gcc dot gnu.org changed:
What|Removed |Added
Attachment #25333|0 |1
is
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #20 from Jakub Jelinek jakub at gcc dot gnu.org 2011-09-22
15:52:11 UTC ---
The reason why many of the loops in *-12.c aren't vectorized is that for
idxtype other than unsigned int which is the type of i there is a cast from i
to the
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Jakub Jelinek jakub at gcc dot gnu.org changed:
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Attachment #25320|0 |1
is
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #15 from Ira Rosen irar at il dot ibm.com 2011-09-21 12:20:47 UTC
---
(In reply to comment #14)
Another thing is that this really ought to work even with -ftree-pre, having a
vectorization that requires users to disable PRE would
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Jakub Jelinek jakub at gcc dot gnu.org changed:
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Attachment #25331|0 |1
is
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--- Comment #17 from Jakub Jelinek jakub at gcc dot gnu.org 2011-09-21
16:57:08 UTC ---
Seems my reduction patterns just give some extreme's index, but not necessarily
the first or last extreme's index. It was just narrowing down the index
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #6 from Ira Rosen irar at il dot ibm.com 2011-09-20 08:27:08 UTC
---
Thanks for working on this!
It looks like the problem is with the way the stmts are marked. We don't insert
pattern stmts now, so the things are more tricky. I'll
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #7 from Ira Rosen irar at il dot ibm.com 2011-09-20 11:45:53 UTC
---
Created attachment 25322
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=25322
fix
Here is the fix (it's a diff relative to your patch).
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #8 from Ira Rosen irar at il dot ibm.com 2011-09-20 11:47:00 UTC
---
Created attachment 25323
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=25323
complete patch including my fix
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #9 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-09-20 12:05:01 UTC ---
does not compile to me
../.././gcc/tree-vect-loop.c: In function 'vect_is_simple_reduction_1':
../.././gcc/tree-vect-loop.c:2237:35: warning:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Ira Rosen irar at il dot ibm.com changed:
What|Removed |Added
Attachment #25322|0 |1
is obsolete|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Ira Rosen irar at il dot ibm.com changed:
What|Removed |Added
Attachment #25323|0 |1
is obsolete|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #12 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-09-20 13:46:16 UTC ---
I'm getting these errors
../.././gcc/optabs.c: In function 'optab_d* optab_for_tree_code(tree_code,
const_tree, optab_subtype)':
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #13 from Jakub Jelinek jakub at gcc dot gnu.org 2011-09-20
14:01:55 UTC ---
Ira, thanks for your help, I'll continue working on this now.
To vincenzo, this patch isn't finished, so it is premature to test it.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #4 from Jakub Jelinek jakub at gcc dot gnu.org 2011-09-19
12:51:59 UTC ---
I've looked briefly at the
http://gcc.gnu.org/ml/gcc-patches/2010-08/msg00631.html
patch, it seems the UNSPEC_REDUC* is unnecessary there (only used in the
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #5 from Jakub Jelinek jakub at gcc dot gnu.org 2011-09-19
15:59:06 UTC ---
Created attachment 25320
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=25320
gcc47-pr50374-wip.patch
Here is the ported patch with rejects hopefully
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Ira Rosen irar at il dot ibm.com changed:
What|Removed |Added
CC||irar at il dot ibm.com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
Jakub Jelinek jakub at gcc dot gnu.org changed:
What|Removed |Added
CC||jakub at gcc dot
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50374
--- Comment #3 from vincenzo Innocente vincenzo.innocente at cern dot ch
2011-09-13 08:45:40 UTC ---
with
gcc version 4.7.0 20110910 (experimental) (GCC)
int lmin(float const * __restrict__ c, int N) {
int k=0;
for (int i=1; i!=N; ++i)
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