[all-commits] [llvm/llvm-project] 765358: [AArch64][GlobalISel] Implement another combine fo...

[Amara Emerson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7653586d88d8fb45008dd1f89c197592e1ce7c31
      https://github.com/llvm/llvm-project/commit/7653586d88d8fb45008dd1f89c197592e1ce7c31
  Author: Amara Emerson <amara at apple.com>
  Date:   2022-09-29 (Thu, 29 Sep 2022)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64PostLegalizerLowering.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/postlegalizer-lowering-ext.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/postlegalizer-lowering-uzp.mir

  Log Message:
  -----------
  [AArch64][GlobalISel] Implement another combine for shufflevector->AArch64 G_EXT.

This is a port of an existing optimization in AArch64 ISelLowering, handling
a case when the same input vector can be used for both ext inputs.

Differential Revision: https://reviews.llvm.org/D134891