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

[wbrana at gmail dot com]

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