Older versions MinGW to research

[Wojciech Balawender]

 Hello,

I'm writing my master's thesis and I need older versions MinGW to my
research - as many binary versions as possible (since GCC 2.95) for
Microsoft Windows. I will test the impact of new language constructs on the
speed of compiling the source code and size of source code... and many,
many other things will be tested. Where can download all versions? ;-)

Thanks for the help
Regards,