Re: refs on basic block cloning

gerlek@dat.cse.ogi.edu (Michael Gerlek) writes:
>>>We're looking at optimizations which can benefit from, or may be
enabled by, cloning basic blocks; I'd appreciate any references anyone
knows has on this subject.<<<


The most profitable basic block manipulation you can do doesn't involve
cloning at all, but merely the insertion of an empty basic block on any
arc that flows from a block with multiple successors to a block with
multiple predecessors. This greatly "opens up" optimizations such as
Morel-Renvois, and it also makes MR converge more quickly and reliably.
--

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