[Bug target/59578] Overuse of v prefix for SSE instructions
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Sun Dec 22 20:23:00 GMT 2013
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59578
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is intentional, please read something about SSE to AVX transition
penalties, e.g.
http://software.intel.com/sites/default/files/m/d/4/1/d/8/11MC12_Avoiding_2BAVX-SSE_2BTransition_2BPenalties_2Brh_2Bfinal.pdf
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