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[Bug tree-optimization/54077] Bytemark FP EMULATION 9%-15% slower than with clang
- From: "wbrana at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 11 Nov 2012 16:36:40 +0000
- Subject: [Bug tree-optimization/54077] Bytemark FP EMULATION 9%-15% slower than with clang
- Auto-submitted: auto-generated
- References: <bug-54077-4@http.gcc.gnu.org/bugzilla/>
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