[PATCH] D144670: [AArch64][GlobalISel] Legalize G_SHUFFLE_VECTOR with smaller dest size

[Vladislav Dzhidzhoev via Phabricator via llvm-commits]

dzhidzhoev created this revision.
dzhidzhoev added reviewers: aemerson, paquette, arsenm, t.p.northover, jroelofs.
Herald added subscribers: hiraditya, kristof.beyls.
Herald added a project: All.
dzhidzhoev requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Legalize G_SHUFFLE_VECTOR having destination vector length smaller than
source vector length by reshaping destination vector.

arm64-vabs.ll and arm64-vcvt_f.ll tests used to fallback to DAGIsel before
this commit.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144670

Files:
  llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-shuffle-vector.mir
  llvm/test/CodeGen/AArch64/arm64-vabs.ll
  llvm/test/CodeGen/AArch64/arm64-vcvt_f.ll

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