[PATCH] D81049: [AArch64][GlobalISel] Select uzp1 and uzp2

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.
paquette added a reviewer: aemerson.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls, rovka.
Herald added a project: LLVM.

Porting the mask stuff for uzp1 and uzp2 from AArch64ISelLowering.

Add two custom opcodes: G_UZP1 and G_UZP2.

Produce them in the post-legalizer combiner when the mask checks out.

Tests:

- postlegalizer-combiner-uzp.mir verifies that we create G_UZP1 and G_UZP2. The testcases that check that we create them come from neon-perm.ll.

- select-uzp.mir verifies that we can select G_UZP1 and G_UZP2.


https://reviews.llvm.org/D81049

Files:
  llvm/lib/Target/AArch64/AArch64Combine.td
  llvm/lib/Target/AArch64/AArch64InstrGISel.td
  llvm/lib/Target/AArch64/AArch64PostLegalizerCombiner.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/postlegalizer-combiner-uzp.mir
  llvm/test/CodeGen/AArch64/GlobalISel/select-uzp.mir

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