Guozhi Wei 66f2d09ebf [DAGCombiner] Transform (zext (select c, load1, load2)) -> (select c, zextload1, zextload2) ...

If extload is legal, following transform
    (zext (select c, load1, load2)) -> (select c, zextload1, zextload2)
can save one ext instruction.

Differential Revision: https://reviews.llvm.org/D95086

2021-02-18 13:15:20 -08:00

5.1 KiB

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