[ast-optimizer-branch] Simplification of Simple grammar

[Diego Novillo]

On Wed, 2002-03-27 at 10:26, Jan Hubicka wrote:

> Just note that code that will "higher" loops to well behaved FOR loops
> (like fortran DO loops do have) with iteration counter going from 0 to end
> would help a lot to the new loop unrolling code on cfg-branch, so we will
> not need to do so dificult analysis as old loop unrolling does.
> 
Exactly.  And if we lowered FOR loops too early we would miss the chance
of doing things like this.

Diego.