RE: [Tinycc-devel] i just can't get over how farging fast tcc is...

[Christian Jullien]

The same curious can compare performances (expressed in second) between gcc
and tcc (both 32/64 bits) on the same Windows 7 x64 machine.
 
While LAP compiled code (interpreted by a virtual machine) is generally
twice as fast as the interpreter, tcc is two times slower.
 
GNU GCC 4.5 (Mgw) XP   (Compile) |  1.047  |
GNU GCC 4.5 (Mgw) XP   (32 bits) |  2.237  |
 
GNU GCC 4.5 (Mgw) XP64 (Compile) |  1.208  |
GNU GCC 4.5 (Mgw) XP64 (64 bits) |  1.985  |
 
Tiny C Compiler   XP   (32 bits) |  5.717  |
Tiny C Compiler   XP   (Compile) | 10.104  |
 
Tiny C Compiler   XP64 (64 bits) |  5.642  |
Tiny C Compiler   XP64 (Compile) | 10.108  |

Here is the complet table on the same Windows machine with all compilers I
use for my non regression tests:

Name                   (mode)    | 9.7.0 |
---------------------------------+-------+-
GNU GCC 4.5 (Mgw) XP   (Compile) | 1.047 |
Microsoft C 16.0  XP   (Compile) | 1.139 |
GNU GCC 4.5 (Mgw) XP64 (Compile) | 1.208 |
Watcom C 1.90     XP   (Compile) | 1.263 |
Microsoft C 16.0  XP64 (Compile) | 1.311 |
Borland C 5.60    XP   (Compile) | 1.341 |
IBM Visual Age C  XP   (Compile) | 1.358 |
Digital Mars 8.52 XP   (Compile) | 1.364 |
LCC C Compiler    XP   (Compile) | 1.373 |
Microsoft C 16.0  XP   (Unicode) | 1.871 |
Microsoft C 16.0  XP   (32 bits) | 1.902 |
GNU GCC 4.5 (Mgw) XP64 (64 bits) | 1.985 |
Microsoft C 16.0  XP64 (64 bits) | 1.985 |
Microsoft C 16.0  XP64 (Unicode) | 1.996 |
Microsoft C 16.0  XP   (64float) | 1.997 |
GNU GCC 4.5 (Mgw) XP   (32 bits) | 2.237 |
Borland C 5.60    XP   (32 bits) | 2.608 |
Watcom C 1.90     XP   (32 bits) | 2.649 |
Pelles C Compiler XP64 (64 bits) | 2.834 |
Pelles C Compiler XP   (32 bits) | 2.862 |
IBM Visual Age C  XP   (32 bits) | 3.027 |
Digital Mars 8.52 XP   (32 bits) | 3.313 |
LCC C Compiler    XP   (32 bits) | 3.624 |
Tiny C Compiler   XP64 (64 bits) | 5.642 |
Tiny C Compiler   XP   (32 bits) | 5.717 |
Tiny C Compiler   XP   (Compile) | 10.104 |
Tiny C Compiler   XP64 (Compile) | 10.108 |
________________________________

From: address@hidden
[mailto:address@hidden On Behalf Of
Stanley Steel
Sent: mercredi 2 février 2011 16:59
To: address@hidden
Subject: Re: [Tinycc-devel] i just can't get over how farging fast tcc is...


For the curious:
I have been compiling several of my projects with both tcc and gcc for
awhile now.  Specifically, I've been compiling an ANTLR C project that
consist of about 60,000 lines of ANLTR generated code that translates
another language to C.  As you would expect, the compilation with tcc is
noticeably faster.  The runtime performance of scanning, parsing, and
translating a ~100 line file is:  

gcc= ~.000850 sec 
tcc=  ~.001050 sec 

I've done other test as well (microbenchmarks), but in those test there was
no noticeable difference.  The state of my machine seemed to be the biggest
variable even for long running loops. 



On Wed, Feb 2, 2011 at 3:53 AM, Gary Birkett <address@hidden> wrote:




        On Wed, Feb 2, 2011 at 3:20 AM, Stephan Beal <address@hidden>
wrote:
        

                On Wed, Feb 2, 2011 at 4:09 AM, Gary Birkett
<address@hidden> wrote:
                

                        :)
                        


                        Why not test it? :) 
                        


                The milliseconds won't matter for what i'm doing - the
database access times swamp any overhead introduced by a non-optimizing
compiler. 
                

                :)
                
                (You're not going to convince me to not be impressed with
tcc's speed ;)


        I am already impressed with its reported build speed, though I am
curious at just how much of a difference the optimisation steps in gcc
actually make.
        I would test myself, but most of the things I build are for ARM,
hence my asking you to try some tests since you are using it :)
        
        Regards,
        
        Gary Birkett
        



                -- 
                ----- stephan beal
                http://wanderinghorse.net/home/stephan/
                

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