[PATCH] D72511: GlobalISel: Handle more cases of G_SEXT narrowing

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: aemerson, paquette, aditya_nandakumar, dsanders.
Herald added subscribers: Petar.Avramovic, volkan, hiraditya, rovka, nhaehnle, wdng, jvesely.
Herald added a project: LLVM.
arsenm added a parent revision: D72506: GlobalISel: Fix narrowScalar for G_ANYEXT results.

This now develops the same problem G_ZEXT/G_ANYEXT have where the
requested type is assumed to be the source type. This will be fixed
separately by creating intermediate merges.


https://reviews.llvm.org/D72511

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sext.mir

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