[all-commits] [llvm/llvm-project] b5812c: [LoongArch] TableGen-erate SDNode descriptions (#1...

[Sergei Barannikov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b5812c0cf789aa4cb60d42681cb2e46a417e1bc7
      https://github.com/llvm/llvm-project/commit/b5812c0cf789aa4cb60d42681cb2e46a417e1bc7
  Author: Sergei Barannikov <barannikov88 at gmail.com>
  Date:   2025-11-20 (Thu, 20 Nov 2025)

  Changed paths:
    M llvm/lib/Target/LoongArch/CMakeLists.txt
    M llvm/lib/Target/LoongArch/LoongArchFloat32InstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchFloat64InstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchISelDAGToDAG.h
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.h
    M llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchLASXInstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchLSXInstrInfo.td
    A llvm/lib/Target/LoongArch/LoongArchSelectionDAGInfo.cpp
    A llvm/lib/Target/LoongArch/LoongArchSelectionDAGInfo.h
    M llvm/lib/Target/LoongArch/LoongArchSubtarget.cpp
    M llvm/lib/Target/LoongArch/LoongArchSubtarget.h

  Log Message:
  -----------
  [LoongArch] TableGen-erate SDNode descriptions (#168129)

This allows SDNodes to be validated against their expected type profiles
and reduces the number of changes required to add a new node.

I had to split `VSHUF4I` into two variants (`VSHUF4I` and `VSHUF4I_D`)
since `loongarch_vshuf4i` and `loongarch_vshuf4i_d` have different
number of operands, and this prevented the node from being imported.

There is just one node that currently fails validation, see
`LoongArchSelectionDAGInfo::verifyTargetNode()`.

Part of #119709.

Pull Request: https://github.com/llvm/llvm-project/pull/168129



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