[PATCH] D60881: [GlobalISel][AArch64] Legalize/select G_(S/Z/ANY)_EXT for v8s8s

[Jessica Paquette via Phabricator via llvm-commits]

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

This adds legalization for G_SEXT, G_ZEXT, and G_ANYEXT for v8s8s.

We were falling back on G_ZEXT in arm64-vabs.ll before, preventing us from selecting the @llvm.aarch64.neon.sabd.v8i8 intrinsic.

      

This adds legalizer support for those 3, which gives us selection via the importer. Update the relevant tests (legalize-ext.mir, select-int-ext.mir) and add a GISel line to arm64-vabs.ll.


https://reviews.llvm.org/D60881

Files:
  llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext.mir
  llvm/test/CodeGen/AArch64/GlobalISel/select-int-ext.mir
  llvm/test/CodeGen/AArch64/arm64-vabs.ll

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