On Wed, May 04, 2011 at 08:30:40AM -0400, Richard Kenner wrote: > > There are pros and cons about early optimization, actually. > > Generating extremely optimized IL very early can actually tie up > > subsequent passes. For instance, loop unrolling and vectorization. > > There are others in the literature. > > Sure, in the sorts of examples you mention where there's a level of > "globality" to it. But I don't see it in the types of things that > fold does. How could it ever be better to leave "a - a" in the tree > instead of "0"?
If you ever want to do things beside compile the code--automated refactoring, renaming, pretty-printing, etc.--fidelity to the source is preferred. -Nathan
