tree 0ed9837532c9ef315e30249e2b5e4bfefcad9c06
parent 11bb699c9eb0e1f92529e80a592a7162b70791d4
author Guozhi Wei <carrot@google.com> 1613682739 -0800
committer Copybara-Service <copybara-worker@google.com> 1613734961 -0800

[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

GitOrigin-RevId: 66f2d09ebf8d81d019a5524cdc5e7f88acbb7504