[PATCH] D71194: [ARM] MVE VLDn addressing modes

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: t.p.northover, samparker, SjoerdMeijer, simon_tatham, ostannard.
Herald added subscribers: hiraditya, kristof.beyls, qcolombet.
Herald added a project: LLVM.

This adds Post inc variants of the VLD2/4 and VST2/4 instructions in MVE. It uses the same mechanism/nodes as Neon, transforming the intrinsic+add pair into a ARMISD::VLD2_UPD, which gets selected to a post-inc instruction. The code to do that is mostly taken from the existing Neon code, but simplified as less variants are needed.

It also fills in some getTgtMemIntrinsic for the arm.mve.vld2/4 instrinsics, which allow the nodes to have MMO's, calculated as the full length to the memory being loaded/stored.


https://reviews.llvm.org/D71194

Files:
  llvm/include/llvm/IR/IntrinsicsARM.td
  llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/lib/Target/ARM/ARMInstrMVE.td
  llvm/test/CodeGen/Thumb2/mve-multivec-spill.ll
  llvm/test/CodeGen/Thumb2/mve-vld2-post.ll
  llvm/test/CodeGen/Thumb2/mve-vld2.ll
  llvm/test/CodeGen/Thumb2/mve-vld4-post.ll
  llvm/test/CodeGen/Thumb2/mve-vld4.ll
  llvm/test/CodeGen/Thumb2/mve-vst2-post.ll
  llvm/test/CodeGen/Thumb2/mve-vst2.ll
  llvm/test/CodeGen/Thumb2/mve-vst4-post.ll
  llvm/test/CodeGen/Thumb2/mve-vst4.ll

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