[PATCH] D60534: [AArch64][GlobalISel] Legalization and ISel support for load/stores of vectors of pointers

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added a reviewer: paquette.
aemerson added a project: LLVM.
Herald added subscribers: Petar.Avramovic, hiraditya, kristof.beyls, javed.absar, rovka.

Loads and store of values with type like <2 x p0> currently don't get imported because SelectionDAG has no knowledge of pointer types. To leverage the existing support for vector load/stores, we can bitcast the value to have s64 element types instead. We do this as a custom legalization.

This patch also adds support for general loads of <2 x s64>, and relaxes some type conditions on selecting G_BITCAST.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D60534

Files:
  llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp
  llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
  llvm/lib/Target/AArch64/AArch64LegalizerInfo.h
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-fallback.ll
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store-fewerElts.mir
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store-vector-of-ptr.mir
  llvm/test/CodeGen/AArch64/GlobalISel/select-load-store-vector-of-ptr.mir
  llvm/test/CodeGen/AArch64/GlobalISel/select-load.mir

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