David Green 1084b32339 [ARM] Always replace FP16 bitcasts with VMOVhr or VMOVrh ...

This changes the logic with lowering fp16 bitcasts to always produce
either a VMOVhr or a VMOVrh, instead of only trying to do it with
certain surrounding nodes. To perform the same optimisations demand bits
and known bits information has been added for them.

Differential Revision: https://reviews.llvm.org/D78587

2020-04-28 16:12:53 +01:00

699 KiB

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