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Author SHA1 Message Date
David Green b93d74ac9c [ARM] Basic getArithmeticReductionCost reduction costs 
This adds some basic costs for MVE reductions - currently just costing
the simple legal add vectors as a single MVE instruction. More complex
costing can be added in the future when the framework more readily
allows it.

Differential Revision: https://reviews.llvm.org/D88980
 2020-10-17 10:29:00 +01:00
David Green 4c3515cd62 [ARM] Add MVE vecreduce costmodel tests. NFC 
There were some existing tests that were not super useful. New ones are
added for testing MVE specific patterns.
 2020-10-09 16:25:25 +01:00