[PATCH] D33587: [DAGCombine] Do several rounds of combine.

[Amaury SECHET via Phabricator via llvm-commits]

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@RKSimon I'll find a way to make that fast, or find an alternative like activating it only in some specific situations. In addition to solving my specific problem, it seems to improve numerous other things, especially for the AMD backend. In any case, I think https://reviews.llvm.org/D33840 is a good thing either way and we should proceed with it.


https://reviews.llvm.org/D33587