[all-commits] [llvm/llvm-project] 8532b2: [ARM] MVE VCVT lowering for f16->f32 extends

[David Green via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8532b2ee8920adadf556cb6b63d82f9092eb8cd3
      https://github.com/llvm/llvm-project/commit/8532b2ee8920adadf556cb6b63d82f9092eb8cd3
  Author: David Green <david.green at arm.com>
  Date:   2020-06-25 (Thu, 25 Jun 2020)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    M llvm/lib/Target/ARM/ARMISelLowering.h
    M llvm/lib/Target/ARM/ARMInstrMVE.td
    M llvm/test/CodeGen/Thumb2/mve-fp16convertloops.ll
    M llvm/test/CodeGen/Thumb2/mve-shuffleext.ll
    M llvm/test/CodeGen/Thumb2/mve-vcvt16.ll

  Log Message:
  -----------
  [ARM] MVE VCVT lowering for f16->f32 extends

This adds code to lower f16 to f32 fp_exts's using an MVE VCVT
instructions, similar to a recent similar patch for fp_trunc. Again it
goes through the lowering of a BUILD_VECTOR, but is slightly simpler
only having to deal with interleaved indices. It adds a VCVTL node to
lower to, similar to VCVTN.

Differential Revision: https://reviews.llvm.org/D81339