[PATCH] D100725: GlobalISel: Help reduce operation width for instruction with two results.

[Christudasan Devadasan via Phabricator via llvm-commits]

cdevadas created this revision.
cdevadas added reviewers: gargaroff, paquette, aemerson, arsenm.
Herald added subscribers: hiraditya, rovka.
cdevadas requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

The function `reduceOperationWidth` helps to legalize a vector
operation either by narrowing its type or by scalarizing the
operation itself. It currently supports instructions with one result.
This patch, in addition, allows the same for instructions with two
results (for instance, G_SDIVREM).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100725

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

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