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[ARM] Add a number of intrinsics for MVE lane interleaving

Authored by dmgreen on Apr 12 2021, 9:23 AM.

Description

[ARM] Add a number of intrinsics for MVE lane interleaving

Add a number of intrinsics which natively lower to MVE operations to the
lane interleaving pass, allowing it to efficiently interleave the lanes
of chucks of operations containing these intrinsics.

Differential Revision: https://reviews.llvm.org/D97293