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[ARM] Add ARMv8.2-A FP16 vector intrinsic

Description

[ARM] Add ARMv8.2-A FP16 vector intrinsic

Putting back the code in commit r327189 that was reverted in r322737. The code is being committed in three stages and this one is the last stage: 1) r327455 fp16 feature flags, 2) r327836 pass half type or i16 based on FullFP16, and 3) the code here which the front-end fp16 vector intrinsic for ARM.

Differential revision https://reviews.llvm.org/D43650

Details

Committed
azMar 22 2018, 5:08 PM
Parents
rL328276: Sink PrettyDeclStackTrace down to the AST library
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