[EraVM][MC] Remove dead code here and there

Author: atrosinenko

llvm/lib/Target/EraVM/EraVMInstrFormats.td

@@ -247,10 +247,6 @@ class IForm <EraVMOpcode opcode,
   let UseLogicalOperandMappings = true;
 }
 
-class INop<dag ins, string asmstr, list<dag> pattern>
-  : IForm <OpNoOp, (outs), ins, asmstr, pattern > {
-}
-
 class IJump<EraVMOpcode opcode,
             SrcMode src,
             dag outs, dag ins, string asmstr, list<dag> pattern>

llvm/lib/Target/EraVM/EraVMInstrInfo.td

@@ -130,13 +130,6 @@ def large_imm : Operand<i256>, IntImmLeaf<i256, [{
   return !Imm.abs().isIntN(16);
 }]> {}
 
-
-def first_op : Operand<i256>, IntImmLeaf<i256, [{
-  return Imm.getZExtValue() < 2;
-}]> {
-  let PrintMethod = "printFirstOperand";
-}
-
 // This operand class represents those jump targets described
 // as imm_in operand in the spec.
 def JumpTargetOperand : AsmOperandClass {

llvm/lib/Target/EraVM/EraVMOpcodes.td

@@ -135,10 +135,6 @@ def EraVMOpcodesList : GenericTable {
   let PrimaryKey = [ "BaseOpcode" ];
   let PrimaryKeyName = "lookupEraVMOpcodeByValue";
 }
-def lookupEraVMOpcodeByName : SearchIndex {
-  let Table = EraVMOpcodesList;
-  let Key = [ "Name" ];
-}
 
 def OpInvalid : EraVMOpcode<"<invalid>", 0, DirectEncoding>;
 def OpNoOp : EraVMOpcode<"nop",  1,   NopEncoding>;

llvm/lib/Target/EraVM/MCTargetDesc/EraVMInstPrinter.cpp

@@ -56,11 +56,6 @@ void EraVMInstPrinter::printInst(const MCInst *MI, uint64_t Address,
   printAnnotation(O, Annot);
 }
 
-void EraVMInstPrinter::printPCRelImmOperand(const MCInst *MI, unsigned OpNo,
-                                            raw_ostream &O) {
-  llvm_unreachable("Not implemented yet!");
-}
-
 void EraVMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
                                     raw_ostream &O, const char *Modifier) {
   assert((Modifier == nullptr || Modifier[0] == 0) && "No modifiers supported");

llvm/lib/Target/EraVM/MCTargetDesc/EraVMInstPrinter.h

@@ -37,7 +37,6 @@ class EraVMInstPrinter : public MCInstPrinter {
 private:
   void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O,
                     const char *Modifier = nullptr);
-  void printPCRelImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   void printCCOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   void printMemOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   template <bool IsInput>