David Green 4ce26deac2 [DAG] Reassociate Add with Or ...

We already have reassociation code for Adds and Ors separately in DAG
combiner, this adds it for the combination of the two where Ors act like
Adds. It reassociates (add (or (x, c), y) -> (add (add (x, y), c)) where
we know that the Ors operands have no common bits set, and the Or has
one use.

Differential Revision: https://reviews.llvm.org/D104765

2021-07-07 10:21:07 +01:00

3.2 KiB

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