[PATCH] D95034: [AArch64][GlobalISel] Implement widenScalar for signed overflow

[Cassie Jones via Phabricator via llvm-commits]

porglezomp created this revision.
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Implement widening for G_SADDO and G_SSUBO. Previously it was only
implemented for G_UADDO and G_USUBO. Also add legalize-add/sub tests for
narrow overflowing add/sub on AArch64.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D95034

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-add.mir
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-sub.mir

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