http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
Marc Glisse glisse at gcc dot gnu.org changed:
What|Removed |Added
CC||ylow at graphlab
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
Uroš Bizjak ubizjak at gmail dot com changed:
What|Removed |Added
Target||x86
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #7 from Uroš Bizjak ubizjak at gmail dot com ---
Fixed.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #8 from vincenzo Innocente vincenzo.innocente at cern dot ch ---
thanks for getting in the trunk.
will be possible to back port to at least 4.8?
(this issue is there till 4.4!)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
Yuri Rumyantsev ysrumyan at gmail dot com changed:
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CC||ysrumyan at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #10 from Uroš Bizjak ubizjak at gmail dot com ---
(In reply to Yuri Rumyantsev from comment #9)
I assume that this fix is not good and must be reverted - I will prepare
another fix for your reviewing. There are at least 2 problems:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #11 from Evgeniy Dushistov dushistov at mail dot ru ---
(In reply to Yuri Rumyantsev from comment #9)
I checked that zeroing of xmm register before conversion leads to
performance slowdown on SLM (-5%) for proveded test-case. I
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #5 from vincenzo Innocente vincenzo.innocente at cern dot ch ---
confirmed that the patch fixes the issue
c++ -O2 -march=corei7-avx polyAVX.cpp
time ./a.out
10358474048
2.965u 0.001s 0:02.97 99.6%0+0k 0+0io 146pf+0w
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
H.J. Lu hjl.tools at gmail dot com changed:
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CC||hjl.tools at gmail
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
--- Comment #3 from Evgeniy Dushistov dushistov at mail dot ru ---
Great, I tested the patch, at now pi calculation as fast as in icc, and two
times faster then in clang 3.3.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
H.J. Lu hjl.tools at gmail dot com changed:
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Attachment #30560|0 |1
is
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57954
H.J. Lu hjl.tools at gmail dot com changed:
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CC||dushistov at mail dot
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