------- Comment #1 from kkojima at gcc dot gnu dot org 2007-09-14 11:46 -------
I've run scimark on my box:
sh4-unknown-linux-gnu / linux-kernel 2.6.22-rc4 / SH7751R
with -O3 -ffast-math -fomit-frame-pointer -funroll-loops -ftracer
-funit-at-a-time:
gcc-3.4.6 gcc-4.2.1 gcc-4.3.0(20070910)
Composite Score: 16.76 16.86 16.99
FFT Mflops: 12.92 13.36 13.36
SOR Mflops: 27.88 26.76 28.01
MonteCarlo: Mflops: 9.96 9.73 9.67
Sparse matmult Mflops: 14.95 16.06 14.84
LU Mflops: 18.08 18.39 19.05
Hmm... I can't reproduce the regression in linux-sh, at least
for SH7751R.
--
kkojima at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kkojima at gcc dot gnu dot
| |org
Summary|[SH4] performance regression|[SH4] performance regression
|between 3.4.6 and 4.x |between 3.4.6 and 4.x
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33431
