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>> Ah, that's why I still love my mingw/VC++ 6.0 combo ;)
>> Does one BTW get any performance increase from 
>> the lastest MS compilers?

> Don't know for Lua itself, but for other things 
> the fact that the latter compilers (including the 
> free ones) can use the SSE and SSE2 instruction sets of 
> current processors, is a major change.

That's only an advantage if you were previously using an MS compiler, 
though, since gcc has long provided code generation options for specific 
CPUs and CPU features, e.g.

 -mtune={i386,i486,pentium-m,prescott,nocona,athlon64,...etc.} 
 -mmmx  
 -msse  
 -msse2 
 -msse3
 -m3dnow

Anyone benchmarked the change (if any) in Lua performance when using 
-mtune= to target the latest and greatest CPU when one is available?

Or done a VC6 versus VC8 benchmark? (We already have one report of VC9 < 
VC6.)