Loop unrolling

[Scott A Crosby]

On Wed, 16 Sep 1998, Joern Rennecke wrote:

> It is a special case of loop unrolling.  It is fairly easy to modify
> unroll.c to completely unroll all empty loops.  The tricky part is that
> some loops might not terminate before unrolling, yet unrolling them
> completely removes them.

Also, you would want to rerun this pass multiple times, because you might
have multiple-nested empty loops. (I think this could happen when you 
initializing a multidimensional array of objects.)

It would at least help a 'little' at speeding up template code and it
would definitely remove unnecessary do-nothing code, decreasing
code-bloat a small amount.

Scott

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