[all-commits] [llvm/llvm-project] 33aa5d: [ARM] VMLAVA reduction patterns

[David Green via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 33aa5dfe9c2c277b7fd94a05ffc33247ccbc74da
      https://github.com/llvm/llvm-project/commit/33aa5dfe9c2c277b7fd94a05ffc33247ccbc74da
  Author: David Green <david.green at arm.com>
  Date:   2020-02-19 (Wed, 19 Feb 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-vecreduce-mla.ll

  Log Message:
  -----------
  [ARM] VMLAVA reduction patterns

Similar to VADDV and VADDLV that have been added recently, this adds
lowering and patterns for VMLAV, VMLAVA, VMLALV and VMLALVA. They
perform the same roles as the add's, just folding a mul into the same
instruction (and so taking two inputs). As such, they need to be lowered
in the same way as the types are often not legal.

Differential Revision: https://reviews.llvm.org/D74390