http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182
--- Comment #6 from Oleg Smolsky <oleg.smolsky at gmail dot com> 2011-08-25
15:25:49 UTC ---
Oh, the settings and things were discussed the mail thread... Here is the
digest:
I have compiled and run a set of C++ benchmarks on a CentOS4/64 box using the
following compilers:
a) g++4.1 that is available for this distro (GCC version 4.1.2 20071124 (Red
Hat 4.1.2-42)
b) g++4.6 that I built (stock version 4.6.1)
I built the compiler with all the default options (it just has a distinct
installation path):
../gcc-%{version}/configure --prefix=/work/tools/gcc46
--enable-languages=c,c++ --with-system-zlib --with-mpfr=/work/tools/mpfr24
--with-gmp=/work/tools/gmp --with-mpc=/work/tools/mpc
LD_LIBRARY_PATH=/work/tools/mpfr/lib24:/work/tools/gmp/lib:/work/tools/mpc/lib
Tests were compiled with -O2 and -O3, I later added -march=native to 4.6
builds.
The processor is Intel quad core something:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Genuine Intel(R) CPU @ 2.40GHz
stepping : 4
cpu MHz : 2393.943
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor
ds_cpl tm2 cx16 xtpr lahf_lm
bogomips : 4793.09
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
