Author: Christophe Theron
Date: 06:42:40 02/28/98
Go up one level in this thread
On February 28, 1998 at 00:04:33, Robert Hyatt wrote:
>On February 28, 1998 at 00:01:06, Christophe Theron wrote:
>
>>I worked hard to port Tiger from Gnu C (free compiler) to Microsoft
>>Visual C++ 4.0.
>>
>>Well... What I get is a 10% SLOWDOWN!!! All speed optimizations turned
>>ON. And the fastest code is achieved when I select 486 instead of
>>Pentium!
>>
>>Several possible explanations:
>>1) I should upgrade to a better version of MSVC...
>
>absolutely. Get MSVC version 5.0. The code optimizer is far better
>and knows about the pentium architecture. 4.0 does not so far as I
>know.
>
>>2) I am calling a fonction that is very time consuming under MSVC, and
>>is cheap under GnuC...
>
>doubtful. msvc 5 makes crafty about 10% faster than even the best
>pentium
>compiler group version of gcc. and that is without using the assembly
>code
>we use with gcc...
OK. I'll buy the latest MSVC.
Maybe I should also try to download the latest GCC version. I have heard
that it has been improved for Pentium code generation "recently". I'm
using the June 97 version.
Thanks Bob!
Christophe
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