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Unverified Commit 05638592 authored by Roman Lebedev's avatar Roman Lebedev
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[ScalarizeMaskedMemIntrin] Preserve Dominator Tree, if avaliable 

This de-pessimizes the arguably more usual case of no masked mem intrinsics,
and gets rid of one more Dominator Tree recalculation.

As per llvm/test/CodeGen/X86/opt-pipeline.ll,
there's one more Dominator Tree recalculation left, we could get rid of.
parent 577fdcaa
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