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275ede00a2
The vmovlb instructions can be uses to sign or zero extend vector registers between types. This adds some patterns for them and relevant testing. The VBICIMM generation is also put behind a hasNEON check (as is already done for VORRIMM). Code originally by David Sherwood. Differential Revision: https://reviews.llvm.org/D64069 llvm-svn: 366008
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