Dump operand and result orders from ODS

[jackalcooper]

llvm-tblgen -dump-json

• using llvm-tblgen -dump-json wrapper.td leads to duplicated definitions. For instance

ArmSMEOps.td:317:5: error: def already exists: TileLoadOp
def TileLoadOp : ArmSME_Op<"tile_load", [
    ^
Included from iwrapper.td:2:
AMX.td:182:5: note: location of previous definition
def TileLoadOp : AMX_Op<"tile_load", [Pure,

mlir-pdll -dump-ods

• custom mlir-pdll can't be easily built down-stream, because MLIRPDLLParser not exported
• mlir-pdll's ODS dump is not JSON and might subject to change.

Operation `shape.concat` {
  Operands { lhs : Shape_ShapeOrExtentTensorType, rhs : Shape_ShapeOrExtentTensorType }
  Results { result : Shape_ShapeOrExtentTensorType }
}
Operation `shape.const_shape` {
  Attributes { shape : IndexElementsAttr }
  Results { result : Shape_ShapeOrExtentTensorType }
}