[PATCH] D49987: [ARM] Make FP16 vectors legal

[Mikhail Maltsev via Phabricator via llvm-commits]

miyuki updated this revision to Diff 158541.
miyuki retitled this revision from "[ARM] Allow half-precision FP softening" to "[ARM] Make FP16 vectors legal".
miyuki edited the summary of this revision.
miyuki added a comment.

This approach worked, but required handling two more operations in PromoteFloatOperand: PromoteFloatOp_BUILD_VECTOR and PromoteFloatOp_INSERT_VECTOR_ELT, which in my implementation don't actually promote anything but rather do some FP softening. Not sure if there is a better solution.


https://reviews.llvm.org/D49987

Files:
  lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
  lib/CodeGen/SelectionDAG/LegalizeTypes.h
  lib/Target/ARM/ARMISelLowering.cpp
  lib/Target/ARM/ARMISelLowering.h
  test/CodeGen/ARM/fp16-promote.ll
  test/CodeGen/ARM/fp16-v3.ll
  test/CodeGen/ARM/vfp16-calling-conv.ll
  test/Transforms/LoopVectorize/ARM/interleaved_cost.ll

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