[PATCH] D67550: [AArch64][SVE] Implement unpack intrinsics

[Kerry McLaughlin via Phabricator via cfe-commits]

kmclaughlin created this revision.
kmclaughlin added reviewers: sdesmalen, SjoerdMeijer, greened.
Herald added subscribers: psnobl, rkruppe, kristof.beyls, tschuett.
Herald added a reviewer: rengolin.
kmclaughlin added a parent revision: D67549: [IntrinsicEmitter] Add overloaded types for SVE intrinsics (Subdivide2 & Subdivide4).

Implements the following intrinsics:

- int_aarch64_sve_sunpkhi
- int_aarch64_sve_sunpklo
- int_aarch64_sve_uunpkhi
- int_aarch64_sve_uunpklo

This patch also adds AArch64ISD nodes for UNPK instead of implementing
the intrinsics directly, as they are required for a future patch which
implements the sign/zero extension of legal vectors.

This patch includes tests for the Subdivide2Argument type added by D67549 <https://reviews.llvm.org/D67549>


https://reviews.llvm.org/D67550

Files:
  include/llvm/IR/IntrinsicsAArch64.td
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64ISelLowering.h
  lib/Target/AArch64/AArch64InstrInfo.td
  lib/Target/AArch64/AArch64SVEInstrInfo.td
  lib/Target/AArch64/SVEInstrFormats.td
  test/CodeGen/AArch64/sve-intrinsics-perm-select.ll

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