[all-commits] [llvm/llvm-project] 480966: [GlobalISel] Make sure G_ASSERT_ZEXT's src ends up...

[Jessica Paquette via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4809663334ab84fc0e3f4ed11477d6873e642824
      https://github.com/llvm/llvm-project/commit/4809663334ab84fc0e3f4ed11477d6873e642824
  Author: Jessica Paquette <jpaquette at apple.com>
  Date:   2021-02-01 (Mon, 01 Feb 2021)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/select-hint.mir

  Log Message:
  -----------
  [GlobalISel] Make sure G_ASSERT_ZEXT's src ends up with the same rc as dst

When replacing the dst reg with the src reg, we need to make sure that we
propagate the dst reg's register class through to the src.

Otherwise, we aren't meeting the requirements for G_ASSERT_ZEXT, and so the
verifier will fail.

Differential Revision: https://reviews.llvm.org/D95708