[PATCH] D68898: JumpThreading: enhance JT to handle BB with no successor and address comparison

[David Li via Phabricator via llvm-commits]

davidxl added a comment.

JumpThreading is basically basic block cloning followed by control flow simplification. This is just a special case where the second part is missing.

There is already  another special case in JT -- if all the Pred's target successor is the same, there is no threading either -- basically there is only control flow simplification part without the basic cloning.  These two cases are just at two different ends of the spectrum.


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  https://reviews.llvm.org/D68898/new/

https://reviews.llvm.org/D68898