[all-commits] [llvm/llvm-project] 4d11f0: [InstCombine] Try to fold trunc(shuffle(zext)) to ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4d11f04b20f0bd7488e19e8f178ba028412fa519
      https://github.com/llvm/llvm-project/commit/4d11f04b20f0bd7488e19e8f178ba028412fa519
  Author: Alexey Bataev <5361294+alexey-bataev at users.noreply.github.com>
  Date:   2024-01-19 (Fri, 19 Jan 2024)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
    M llvm/test/Transforms/InstCombine/logical-select-inseltpoison.ll
    M llvm/test/Transforms/InstCombine/logical-select.ll

  Log Message:
  -----------
  [InstCombine] Try to fold trunc(shuffle(zext)) to just a shuffle (#78636)

Tries to remove extra trunc/ext instruction for shufflevector
instructions.