Hi,
I did some tests in order to see which, among MSVC,GCC and DevCpp
compilers yield the code with the best speed performance.
The test is a function that contains pure ANSI C code (no __fastcall or
similar)
and doesn't call any system call of the underlying OS.
MSVC GCC DevCpp
--------------------------------------------------------------------
Arch Pentium Pentium Pentium
OS Win2000 Linux (Knoppix) Win2000
Compiler 6.0 3.4
5.0
version
speed 13.4 sec 14.27 sec 14.61 sec
optimization
off
speed 6.48 sec 0.9 sec
1.43 sec
optimization
on
command line cl /O2 main.c gcc -O3 main.c (*)
when optimiz.
on
--------------------------------------------------------------------
(*) I didn't write it down when I did the tests
Unless I'm doing something wrong with MSVC, it seems that
DevCpp and GCC are almost an order of magnitude faster than MSVC.
Enrico
