message: [MLIR:HLO] Change LHLO Outfeed to support multiple inputs.
diff: @@ -584,7 +584,7 @@ def LHLO_InfeedOp: LHLO_Op<"infeed", []>, BASE_HLO_InfeedOp {
  def LHLO_OutfeedOp: LHLO_Op<"outfeed", []> {
  let arguments = (ins
  - Arg<LHLO_Buffer, "", [MemRead]>:$operand,
  + Arg<Variadic<LHLO_Buffer>, "", [MemRead]>:$operands,
  DefaultValuedAttr<StrAttr, "">:$config
  );
  }
  