[PATCH] D82458: [ARM] Adjust default fp extend and trunc costs

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: samparker, SjoerdMeijer, efriedma, ostannard.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls.
Herald added a project: LLVM.

This adds some default costs for fp extends and truncates, generally costing them as 1 per lane. If the type is not legal then the cost will include a call to an __aeabi_ function.

Some NEON code is also adjusted to make sure it applies to the expected types, now that fp16 is a more common thing.


https://reviews.llvm.org/D82458

Files:
  llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/ARM/cast.ll
  llvm/test/Analysis/CostModel/ARM/cast_ldst.ll