This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Bug tree-optimization/54077] Bytemark FP EMULATION 9%-15% slower than with clang


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54077

wbrana <wbrana at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.7/4.8 Regression]        |Bytemark FP EMULATION
                   |Bytemark FP EMULATION 44%   |9%-15% slower than with
                   |slower than with clang      |clang

--- Comment #16 from wbrana <wbrana at gmail dot com> 2012-11-11 16:36:40 UTC ---
on newer CPU

clang 3.1
FP EMULATION        :          594.52  :     285.28  :      65.83
gcc 4.8 branch
FP EMULATION        :             544  :     261.04  :      60.23
gcc 4.7 branch
FP EMULATION        :          520.32  :     249.67  :      57.61
gcc 4.6 branch
FP EMULATION        :          507.84  :     243.69  :      56.23

reverting of 175752 has no effect on 4.7 in case of FP EMU


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]