[MSP430] Remove unused TableGen classes and multiclasses.

[kosarev]

Summary

And warn on them from now on.

[asl]

Thanks!

llvm/lib/Target/MSP430/CMakeLists.txt

 add_llvm_component_group(MSP430)
 
 set(LLVM_TARGET_DEFINITIONS MSP430.td)
 
 tablegen(LLVM MSP430GenAsmMatcher.inc -gen-asm-matcher)
 tablegen(LLVM MSP430GenAsmWriter.inc -gen-asm-writer)
 tablegen(LLVM MSP430GenCallingConv.inc -gen-callingconv)
-tablegen(LLVM MSP430GenDAGISel.inc -gen-dag-isel)
+tablegen(LLVM MSP430GenDAGISel.inc -gen-dag-isel -warn-on-unused-entities)
 tablegen(LLVM MSP430GenDisassemblerTables.inc -gen-disassembler)
 tablegen(LLVM MSP430GenInstrInfo.inc -gen-instr-info)
 tablegen(LLVM MSP430GenMCCodeEmitter.inc -gen-emitter)
 tablegen(LLVM MSP430GenRegisterInfo.inc -gen-register-info)
 tablegen(LLVM MSP430GenSubtargetInfo.inc -gen-subtarget)
 
 add_public_tablegen_target(MSP430CommonTableGen)
 

llvm/lib/Target/MSP430/MSP430InstrFormats.td

 class II8m<bits<3> opcode,
            dag outs, dag ins, string asmstr, list<dag> pattern>
   : IIForm8<opcode, SrcMem, 4, outs, ins, asmstr, pattern> {
   bits<20> src;
   let rs = src{3-0};
   let Inst{31-16} = src{19-4};
 }
 
-class II8i<bits<3> opcode,
-           dag outs, dag ins, string asmstr, list<dag> pattern>
-  : IIForm8<opcode, SrcImm, 4, outs, ins, asmstr, pattern> {
-  bits<16> imm;
-  let rs = 0b0000;
-  let Inst{31-16} = imm;
-}
-
-class II8c<bits<3> opcode,
-           dag outs, dag ins, string asmstr, list<dag> pattern>
-  : MSP430Inst<outs, ins, 2, asmstr> {
-  let Pattern = pattern;
-
-  bits<6> imm;
-
-  let Inst{15-10} = 0b000100;
-  let Inst{9-7}   = opcode;
-  let Inst{6}     = 1;
-  let Inst{5-0}   = imm;
-}
-
 class II8n<bits<3> opcode,
            dag outs, dag ins, string asmstr, list<dag> pattern>
   : IIForm8<opcode, SrcIndReg, 2, outs, ins, asmstr, pattern>;
 
 class II8p<bits<3> opcode,
            dag outs, dag ins, string asmstr, list<dag> pattern>
   : IIForm8<opcode, SrcPostInc, 2, outs, ins, asmstr, pattern>;
 

llvm/lib/Target/MSP430/MSP430InstrInfo.td

 //===-- MSP430InstrInfo.td - MSP430 Instruction defs -------*- tablegen -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file describes the MSP430 instructions in TableGen format.
 //
 //===----------------------------------------------------------------------===//
 
 include "MSP430InstrFormats.td"
 
 //===----------------------------------------------------------------------===//
-// Type Constraints.
-//===----------------------------------------------------------------------===//
-class SDTCisI8<int OpNum> : SDTCisVT<OpNum, i8>;
-class SDTCisI16<int OpNum> : SDTCisVT<OpNum, i16>;
-
-//===----------------------------------------------------------------------===//
 // Type Profiles.
 //===----------------------------------------------------------------------===//
 def SDT_MSP430Call         : SDTypeProfile<0, -1, [SDTCisVT<0, iPTR>]>;
 def SDT_MSP430CallSeqStart : SDCallSeqStart<[SDTCisVT<0, i16>,
                                              SDTCisVT<1, i16>]>;
 def SDT_MSP430CallSeqEnd   : SDCallSeqEnd<[SDTCisVT<0, i16>, SDTCisVT<1, i16>]>;
 def SDT_MSP430Wrapper      : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>,
                                                   SDTCisPtrTy<0>]>;