[all-commits] [llvm/llvm-project] 9348d4: [SelectionDAG] Add space-optimized forms of OPC_Em...

[Wang Pengcheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9348d437f575c383bc810eeda6c6b40d58065fed
      https://github.com/llvm/llvm-project/commit/9348d437f575c383bc810eeda6c6b40d58065fed
  Author: Wang Pengcheng <wangpengcheng.pp at bytedance.com>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/SelectionDAGISel.h
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
    M llvm/utils/TableGen/DAGISelMatcherEmitter.cpp

  Log Message:
  -----------
  [SelectionDAG] Add space-optimized forms of OPC_EmitRegister (#73291)

The followed byte of `OPC_EmitRegister` is a MVT type, which is
usually i32 or i64.

We add `OPC_EmitRegisterI32` and `OPC_EmitRegisterI64` so that we
can reduce one byte.

Overall this reduces the llc binary size with all in-tree targets by
about 10K.