freepascal.compiler/compiler/mos6502/nmos6502add.pas

{
    Copyright (c) 2008 by Florian Klaempfl

    Code generation for add nodes on the MOS Technolog 6502

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 ****************************************************************************
}
unit nmos6502add;

{$i fpcdefs.inc}

interface

    uses
       node,ncgadd, symtype,cpubase;

    type

       { TMOS6502AddNode }

       TMOS6502AddNode = class(tcgaddnode)
       private
         function GetResFlags(unsigned:Boolean;anodetype:tnodetype):TResFlags;
       protected
         function use_mul_helper: boolean;override;
         function first_cmppointer: tnode;override;
         function pass_1 : tnode;override;
         procedure second_cmpordinal;override;
         procedure second_cmpsmallset;override;
         procedure second_cmp64bit;override;
         procedure second_cmp16_32_64bit;
         procedure second_cmp;
       end;

  implementation

    uses
      globtype,systems,
      cutils,verbose,globals,
      symconst,symdef,paramgr,
      aasmbase,aasmtai,aasmdata,aasmcpu,defutil,htypechk,
      cgbase,cgutils,cgcpu,
      cpuinfo,pass_1,pass_2,procinfo,
      cpupara,
      ncon,nset,nadd,
      ncgutil,tgobj,rgobj,rgcpu,cgobj,cg64f32,
      hlcgobj;

{*****************************************************************************
                               TMOS6502AddNode
*****************************************************************************}


    function TMOS6502AddNode.GetResFlags(unsigned: Boolean; anodetype: tnodetype): TResFlags;
      begin
        case anodetype of
          equaln:
            GetResFlags:=F_EQ;
          unequaln:
            GetResFlags:=F_NE;
          else
            if not(unsigned) then
              begin
                { signed }
                if nf_swapped in flags then
                  case anodetype of
                    ltn:
                      GetResFlags:=F_NotPossible;
                    lten:
                      GetResFlags:=F_PL;
                    gtn:
                      GetResFlags:=F_MI;
                    gten:
                      GetResFlags:=F_NotPossible;
                    else
                      internalerror(2014082020);
                  end
                else
                  case anodetype of
                    ltn:
                      GetResFlags:=F_MI;
                    lten:
                      GetResFlags:=F_NotPossible;
                    gtn:
                      GetResFlags:=F_NotPossible;
                    gten:
                      GetResFlags:=F_PL;
                    else
                      internalerror(2014082021);
                  end;
              end
            else
              begin
                { unsigned }
                if nf_swapped in Flags then
                  case anodetype of
                    ltn:
                      GetResFlags:=F_NotPossible;
                    lten:
                      GetResFlags:=F_CS;
                    gtn:
                      GetResFlags:=F_CC;
                    gten:
                      GetResFlags:=F_NotPossible;
                    else
                      internalerror(2014082022);
                  end
                else
                  case anodetype of
                    ltn:
                      GetResFlags:=F_CC;
                    lten:
                      GetResFlags:=F_NotPossible;
                    gtn:
                      GetResFlags:=F_NotPossible;
                    gten:
                      GetResFlags:=F_CS;
                    else
                      internalerror(2014082023);
                  end;
              end;
        end;
      end;


    function TMOS6502AddNode.use_mul_helper: boolean;
      begin
        result:=(nodetype=muln);
      end;


    function TMOS6502AddNode.first_cmppointer: tnode;
      begin
        result:=nil;
        expectloc:=LOC_JUMP;
      end;


    procedure TMOS6502AddNode.second_cmpsmallset;
      begin
        //case nodetype of
        //  equaln,unequaln:
        //    begin
        //      if left.resultdef.size>=2 then
        //        internalerror(2021100302);
        //      second_cmp;
        //    end;
        //  lten,gten:
        //    begin
        //      if left.resultdef.size>=2 then
        //        internalerror(2021100302);
        //
        //      pass_left_right;
        //
        //      if (not(nf_swapped in flags) and (nodetype = lten)) or
        //         ((nf_swapped in flags) and (nodetype = gten)) then
        //        swapleftright;
        //
        //      if left.location.loc<>LOC_REGISTER then
        //        hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);
        //
        //      if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
        //        begin
        //          if is_ref_in_opertypes(right.location.reference,[OT_REF_IX_d,OT_REF_IY_d,OT_REF_HL]) then
        //            begin
        //              cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
        //              cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
        //              current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(A_AND,NR_A,right.location.reference));
        //              current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(A_CP,NR_A,right.location.reference));
        //              cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
        //            end
        //          else
        //            hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
        //        end;
        //      case right.location.loc of
        //        LOC_CONSTANT:
        //          begin
        //            cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
        //            cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
        //            current_asmdata.CurrAsmList.Concat(taicpu.op_reg_const(A_AND,NR_A,right.location.value));
        //            current_asmdata.CurrAsmList.Concat(taicpu.op_reg_const(A_CP,NR_A,right.location.value));
        //            cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
        //          end;
        //        LOC_REGISTER,LOC_CREGISTER:
        //          begin
        //            cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
        //            cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
        //            current_asmdata.CurrAsmList.Concat(taicpu.op_reg_reg(A_AND,NR_A,right.location.register));
        //            current_asmdata.CurrAsmList.Concat(taicpu.op_reg_reg(A_CP,NR_A,right.location.register));
        //            cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
        //          end;
        //        LOC_REFERENCE,LOC_CREFERENCE:
        //          begin
        //            { Already handled before the case statement. Nothing to do here. }
        //          end;
        //        else
        //          internalerror(2021100303);
        //      end;
        //
        //      location_reset(location,LOC_FLAGS,OS_NO);
        //      location.resflags:=F_E;
        //    end
        //  else
        //    internalerror(2021100301);
        //end;
      end;


    procedure TMOS6502AddNode.second_cmp;
      var
        unsigned : boolean;
        tmpreg1,tmpreg2 : tregister;
        i : longint;
        opdef: tdef;
        opsize: TCgSize;
        l: TAsmLabel;
      begin
        unsigned:=not(is_signed(left.resultdef)) or
                  not(is_signed(right.resultdef));
        opdef:=left.resultdef;
        opsize:=def_cgsize(opdef);
        if not (opsize in [OS_8,OS_S8]) then
          internalerror(2024040701);

        pass_left_right;

        if getresflags(unsigned,NodeType)=F_NotPossible then
          swapleftright;

        if left.location.loc<>LOC_REGISTER then
          hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);

        if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
          begin
            //if is_ref_in_opertypes(right.location.reference,[OT_REF_IX_d,OT_REF_IY_d,OT_REF_HL]) then
            //  begin
            //    cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
            //    cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
            //    current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(A_CP,NR_A,right.location.reference));
            //    cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
            //  end
            //else
              hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
          end;
        case right.location.loc of
          LOC_CONSTANT:
            begin
              cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
              cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
              current_asmdata.CurrAsmList.Concat(taicpu.op_const(A_CMP,right.location.value));
              cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
            end;
          LOC_REGISTER,LOC_CREGISTER:
            begin
              cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
              cg.a_load_loc_reg(current_asmdata.CurrAsmList,def_cgsize(left.resultdef),left.location,NR_A);
              current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_CMP,right.location.register));
              cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
            end;
          LOC_REFERENCE,LOC_CREFERENCE:
            begin
              { Already handled before the case statement. Nothing to do here. }
            end;
          else
            internalerror(2020040402);
        end;

        location_reset(location,LOC_FLAGS,OS_NO);
        location.resflags:=getresflags(unsigned,NodeType);
      end;


    procedure TMOS6502AddNode.second_cmp64bit;
      begin
        second_cmp16_32_64bit;
      end;


    procedure TMOS6502AddNode.second_cmp16_32_64bit;
      var
        truelabel,
        falselabel: tasmlabel;
        unsigned  : boolean;
        i, size: Integer;
        tmpref: treference;
        //op: TAsmOp;
        actualnodetype: tnodetype;
      begin
        truelabel:=nil;
        falselabel:=nil;
        pass_left_right;

        unsigned:=not(is_signed(left.resultdef)) or
                  not(is_signed(right.resultdef));

        { we have LOC_JUMP as result }
        current_asmdata.getjumplabel(truelabel);
        current_asmdata.getjumplabel(falselabel);
        location_reset_jump(location,truelabel,falselabel);

        size:=tcgsize2size[def_cgsize(left.resultdef)];

        if NodeType in [equaln,unequaln] then
          begin
            if left.location.loc<>LOC_REGISTER then
              hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);

            if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
              begin
                //if is_ref_in_opertypes(right.location.reference,[OT_REF_IX_d,OT_REF_IY_d,OT_REF_HL]) then
                //  begin
                //    cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                //    tmpref:=right.location.reference;
                //    for i:=0 to size-1 do
                //      begin
                //        cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgz80(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                //        current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(A_CP,NR_A,tmpref));
                //        case NodeType of
                //          equaln:
                //            if i<>(size-1) then
                //              cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,falselabel)
                //            else
                //              cg.a_jmp_flags(current_asmdata.CurrAsmList,F_E,truelabel);
                //          unequaln:
                //            cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,truelabel);
                //          else
                //            internalerror(2020042102);
                //        end;
                //        if i<>(size-1) then
                //          tcgz80(cg).adjust_normalized_ref(current_asmdata.CurrAsmList,tmpref,1);
                //      end;
                //    cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                //    cg.a_jmp_always(current_asmdata.CurrAsmList,falselabel);
                //  end
                //else
                  hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
              end;
            case right.location.loc of
              LOC_CONSTANT:
                begin
                  cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                  for i:=0 to size-1 do
                    begin
                      cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgmos6502(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                      current_asmdata.CurrAsmList.Concat(taicpu.op_const(A_CMP,byte(right.location.value shr (i*8))));
                      case NodeType of
                        equaln:
                          if i<>(size-1) then
                            cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,falselabel)
                          else
                            cg.a_jmp_flags(current_asmdata.CurrAsmList,F_EQ,truelabel);
                        unequaln:
                          cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,truelabel);
                        else
                          internalerror(2020042104);
                      end;
                    end;
                  cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                  cg.a_jmp_always(current_asmdata.CurrAsmList,falselabel);
                end;
              LOC_REGISTER,LOC_CREGISTER:
                begin
                  cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                  for i:=0 to size-1 do
                    begin
                      cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgmos6502(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                      current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_CMP,tcgmos6502(cg).GetOffsetReg64(right.location.register,right.location.registerhi,i)));
                      case NodeType of
                        equaln:
                          if i<>(size-1) then
                            cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,falselabel)
                          else
                            cg.a_jmp_flags(current_asmdata.CurrAsmList,F_EQ,truelabel);
                        unequaln:
                          cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,truelabel);
                        else
                          internalerror(2020042105);
                      end;
                    end;
                  cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                  cg.a_jmp_always(current_asmdata.CurrAsmList,falselabel);
                end;
              LOC_REFERENCE,LOC_CREFERENCE:
                begin
                  { Already handled before the case statement. Nothing to do here. }
                end;
              else
                internalerror(2020042103);
            end;
          end
        else
          begin
            if nf_swapped in Flags then
              begin
                case NodeType of
                  ltn:
                    actualnodetype:=gtn;
                  lten:
                    actualnodetype:=gten;
                  gtn:
                    actualnodetype:=ltn;
                  gten:
                    actualnodetype:=lten;
                  else
                    internalerror(2020042701);
                end;
              end
            else
              actualnodetype:=NodeType;

            if left.location.loc<>LOC_REGISTER then
              hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);

            if right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
              begin
                //if is_ref_in_opertypes(right.location.reference,[OT_REF_IX_d,OT_REF_IY_d,OT_REF_HL]) then
                //  begin
                //    cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                //    tmpref:=right.location.reference;
                //    tcgz80(cg).adjust_normalized_ref(current_asmdata.CurrAsmList,tmpref,size-1);
                //    for i:=size-1 downto 0 do
                //      begin
                //        cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgz80(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                //        if (i=(size-1)) and (not unsigned) then
                //          op:=A_SUB
                //        else
                //          op:=A_CP;
                //        current_asmdata.CurrAsmList.Concat(taicpu.op_reg_ref(op,NR_A,tmpref));
                //        if (i=(size-1)) and (not unsigned) then
                //          case actualnodetype of
                //            ltn,
                //            lten:
                //              tcgz80(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                //            gtn,
                //            gten:
                //              tcgz80(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                //            else
                //              internalerror(2020042202);
                //          end
                //        else if i<>0 then
                //          case actualnodetype of
                //            ltn,
                //            lten:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                //            gtn,
                //            gten:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                //            else
                //              internalerror(2020042207);
                //          end
                //        else
                //          case actualnodetype of
                //            ltn:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,falselabel,falselabel);
                //            lten:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,truelabel,falselabel);
                //            gtn:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,falselabel,truelabel);
                //            gten:
                //              tcgz80(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,truelabel,truelabel);
                //            else
                //              internalerror(2020042203);
                //          end;
                //        if i<>0 then
                //          tcgz80(cg).adjust_normalized_ref(current_asmdata.CurrAsmList,tmpref,-1);
                //      end;
                //    cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                //  end
                //else
                  hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
              end;
            case right.location.loc of
              LOC_CONSTANT:
                begin
                  cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                  for i:=size-1 downto 0 do
                    begin
                      cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgmos6502(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                      //if (i=(size-1)) and (not unsigned) then
                      //  op:=A_SUB
                      //else
                      //  op:=A_CP;
                      current_asmdata.CurrAsmList.Concat(taicpu.op_const(A_CMP,byte(right.location.value shr (i*8))));
                      if (i=(size-1)) and (not unsigned) then
                        case actualnodetype of
                          ltn,
                          lten:
                            tcgmos6502(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                          gtn,
                          gten:
                            tcgmos6502(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                          else
                            internalerror(2020042210);
                        end
                      else if i<>0 then
                        case actualnodetype of
                          ltn,
                          lten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                          gtn,
                          gten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                          else
                            internalerror(2020042211);
                        end
                      else
                        case actualnodetype of
                          ltn:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,falselabel,falselabel);
                          lten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,truelabel,falselabel);
                          gtn:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,falselabel,truelabel);
                          gten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,truelabel,truelabel);
                          else
                            internalerror(2020042215);
                        end;
                    end;
                  cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                end;
              LOC_REGISTER,LOC_CREGISTER:
                begin
                  cg.getcpuregister(current_asmdata.CurrAsmList,NR_A);
                  for i:=size-1 downto 0 do
                    begin
                      cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_8,OS_8,tcgmos6502(cg).GetOffsetReg64(left.location.register,left.location.registerhi,i),NR_A);
                      //if (i=(size-1)) and (not unsigned) then
                      //  op:=A_SUB
                      //else
                      //  op:=A_CP;
                      current_asmdata.CurrAsmList.Concat(taicpu.op_reg(A_CMP,tcgmos6502(cg).GetOffsetReg64(right.location.register,right.location.registerhi,i)));
                      if (i=(size-1)) and (not unsigned) then
                        case actualnodetype of
                          ltn,
                          lten:
                            tcgmos6502(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                          gtn,
                          gten:
                            tcgmos6502(cg).a_jmp_signed_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                          else
                            internalerror(2020042212);
                        end
                      else if i<>0 then
                        case actualnodetype of
                          ltn,
                          lten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,nil,falselabel);
                          gtn,
                          gten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,nil,truelabel);
                          else
                            internalerror(2020042213);
                        end
                      else
                        case actualnodetype of
                          ltn:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,falselabel,falselabel);
                          lten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,truelabel,truelabel,falselabel);
                          gtn:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,falselabel,truelabel);
                          gten:
                            tcgmos6502(cg).a_jmp_unsigned_cmp_3way(current_asmdata.CurrAsmList,falselabel,truelabel,truelabel);
                          else
                            internalerror(2020042216);
                        end;
                    end;
                  cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_A);
                end;
              LOC_REFERENCE,LOC_CREFERENCE:
                begin
                  { Already handled before the case statement. Nothing to do here. }
                end;
              else
                internalerror(2020042106);
            end;
          end;
      end;


    function TMOS6502AddNode.pass_1 : tnode;
      begin
        result:=inherited pass_1;
{$ifdef dummy}
        if not(assigned(result)) then
          begin
            unsigned:=not(is_signed(left.resultdef)) or
              not(is_signed(right.resultdef));

            if is_64bit(left.resultdef) and
              ((nodetype in [equaln,unequaln]) or
               (unsigned and (nodetype in [ltn,lten,gtn,gten]))
              ) then
              expectloc:=LOC_FLAGS;
          end;
        { handling boolean expressions }
        if not(assigned(result)) and
           (
             not(is_boolean(left.resultdef)) or
             not(is_boolean(right.resultdef)) or
             is_dynamic_array(left.resultdef)
           ) then
          expectloc:=LOC_FLAGS;
{$endif dummy}
      end;


    procedure TMOS6502AddNode.second_cmpordinal;
      begin
        if left.resultdef.size>=2 then
          second_cmp16_32_64bit
        else
          second_cmp;
      end;

begin
  caddnode:=TMOS6502AddNode;
end.