[all-commits] [llvm/llvm-project] 40f659: [AArch64][GlobalISel] Make G_SADDE and G_SSUBE legal

[Cassie Jones via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 40f6599c20aff2ca4ee142f7923c6b40c6b9694d
      https://github.com/llvm/llvm-project/commit/40f6599c20aff2ca4ee142f7923c6b40c6b9694d
  Author: Cassie Jones <code at witchoflight.com>
  Date:   2021-01-27 (Wed, 27 Jan 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    A llvm/test/CodeGen/AArch64/GlobalISel/legalize-sadde.mir
    A llvm/test/CodeGen/AArch64/GlobalISel/legalize-ssube.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir

  Log Message:
  -----------
  [AArch64][GlobalISel] Make G_SADDE and G_SSUBE legal

This makes G_SADDE and G_SSUBE legal in preparation for further work
legalizing overflowing operations. It's fine that they don't have an
instruction selector implementation yet, because G_UADDE and G_USUBE are
already legal on AArch64 without an instruction selector implementation. This
completes the set of G_[SU]{ADD,SUB}[EO] operations on AArch64.

Reviewed By: paquette

Differential Revision: https://reviews.llvm.org/D95325