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[Bug tree-optimization/54077] New: Bytemark FP EMULATION 44% 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: Tue, 24 Jul 2012 09:38:13 +0000
- Subject: [Bug tree-optimization/54077] New: Bytemark FP EMULATION 44% slower than with clang
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54077
Bug #: 54077
Summary: Bytemark FP EMULATION 44% slower than with clang
Classification: Unclassified
Product: gcc
Version: 4.7.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: wbrana@gmail.com
http://www.tux.org/~mayer/linux/nbench-byte-2.2.3.tar.gz
clang
FP EMULATION : 405.92 : 194.78 : 44.95
gcc
FP EMULATION : 227.32 : 109.08 : 25.17
CFLAGS = -s -Wall -O3 -g0 -march=core2 -fomit-frame-pointer -funroll-loops
-ffast-math -mssse3 -fno-PIE -fno-exceptions -fno-stack-protector