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  • Chris Lattner's avatar
    After unrolling our single basic block loop, fold it into the preheader and exit · 4d52e1e4
    Chris Lattner authored 
    block.  The primary motivation for doing this is that we can now unroll nested loops.

This makes a pretty big difference in some cases.  For example, in 183.equake,
we are now beating the native compiler with the CBE, and we are a lot closer
with LLC.

I'm now going to play around a bit with the unroll factor and see what effect
it really has.

llvm-svn: 13034
    4d52e1e4