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Date: Thu, 23 Dec 1999 17:54:30 +0100 (MET)
From: John pullitr <pullitr AT gmx DOT net>
To: cygwin AT sourceware DOT cygnus DOT com
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References: <19991223132608 DOT 13904 DOT qmail AT web112 DOT yahoomail DOT com>
Subject: Re: Exec/Compile/Link Speed Comparison gcc/vc++
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g2.95.2 is the mingw version (with the msvcrt libraries
because they are supposedly faster)

Reading specs from
C:\data\q\g2952\bin\..\lib\gcc-lib\i386-mingw32msvc\2.95.2\specs
gcc version 2.95.2 19991024 (release)

I made another test vc++ V6.0 against gcc2.95 and some older
beta version (like Beta 20.0 and 20.1, that need the special
cygwin1.dll)

Everything is controlled by a c program, that generates appropriate
makefiles, calls 
system("zzmain.bat")
in zzmain.bat the path is always reset and then set to the 
current compiler version bin and then the 
make is done (make clean, make -f <file>) followed by another 
system("program") that executes the program that was build.

Compiler  (CFLAGS)          Execute(%)    Comp/link(%) Count
             size [bytes]    min - max     min - max
m6.0                         3.05(190.5%)  3.27(100.0%)  5
           122880            2.88- 3.30    3.23- 3.34
g2.95.2                      3.24(202.2%)  5.71(174.8%)  5
            96307            3.01- 3.39    5.66- 5.77
gb20                         3.24(202.2%)  7.57(231.8%)  5
           100769            3.09- 3.66    7.22- 8.00
gb20.1                       3.59(224.1%)  7.52(230.2%)  5
           387429            3.13- 3.94    7.31- 8.10
egcs1.1                      3.26(203.3%)  6.37(194.9%) 10
           255517            3.08- 3.78    5.70- 7.33

OPTIMIZATION ON

m6.0  /Ox /G5                1.60(100.0%)  6.15(188.2%)  5
            94208            1.54- 1.68    6.04- 6.36
g2.95.2  -O2                 2.23(139.2%) 12.32(377.1%)  5
            75107            2.20- 2.25   12.12-12.59
gb20  -O2                    2.82(175.7%) 11.71(358.5%)  5
            76497            2.21- 3.16   11.48-12.25
gb20.1  -O2                  2.40(149.6%) 12.71(389.2%)  5
           363669            2.28- 2.51   12.43-13.17

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