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	 89c1b68b14
			
		
	
	
		89c1b68b14
		
	
	
	
	
		
			
			This unit was empty unless OLDREGVARS macro was set,
    but this does not compile and no change has been made since 2011.
  * Remove regvars from all _USES clauses.
git-svn-id: trunk@34808 -
		
	
			
		
			
				
	
	
		
			692 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
			
		
		
	
	
			692 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
| {
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|     Copyright (c) 2000-2002 by Florian Klaempfl and Jonas Maebe
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| 
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|     Code generation for add nodes on the Motorola 680x0 family
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| 
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|     This program is free software; you can redistribute it and/or modify
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|     it under the terms of the GNU General Public License as published by
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|     the Free Software Foundation; either version 2 of the License, or
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|     (at your option) any later version.
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| 
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|     This program is distributed in the hope that it will be useful,
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|     but WITHOUT ANY WARRANTY; without even the implied warranty of
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|     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|     GNU General Public License for more details.
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| 
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|     You should have received a copy of the GNU General Public License
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|     along with this program; if not, write to the Free Software
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|     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 
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|  ****************************************************************************
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| }
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| unit n68kadd;
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| 
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| {$i fpcdefs.inc}
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| 
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| interface
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| 
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|     uses
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|        node,nadd,ncgadd,cpubase,cgbase;
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| 
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| 
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|     type
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|        t68kaddnode = class(tcgaddnode)
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|        private
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|           function getresflags(unsigned: boolean) : tresflags;
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|           function getfloatresflags: tresflags;
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|        protected
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|           procedure second_addfloat;override;
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|           procedure second_cmpfloat;override;
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|           procedure second_addordinal;override;
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|           procedure second_cmpordinal;override;
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|           procedure second_cmpsmallset;override;
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|           procedure second_cmp64bit;override;
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|        end;
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| 
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| 
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| implementation
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| 
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|     uses
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|       globtype,systems,
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|       cutils,verbose,globals,
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|       symconst,symdef,paramgr,symtype,
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|       aasmbase,aasmtai,aasmdata,aasmcpu,defutil,htypechk,
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|       cpuinfo,pass_1,pass_2,
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|       cpupara,cgutils,procinfo,
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|       ncon,nset,
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|       ncgutil,tgobj,rgobj,rgcpu,cgobj,cgcpu,hlcgobj,cg64f32;
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| 
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| {*****************************************************************************
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|                                   Helpers
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| *****************************************************************************}
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| 
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|     function t68kaddnode.getresflags(unsigned : boolean) : tresflags;
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|       begin
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|          case nodetype of
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|            equaln : getresflags:=F_E;
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|            unequaln : getresflags:=F_NE;
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|           else
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|            if not(unsigned) then
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|              begin
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|                 if nf_swapped in flags then
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|                   case nodetype of
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|                      ltn : getresflags:=F_G;
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|                      lten : getresflags:=F_GE;
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|                      gtn : getresflags:=F_L;
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|                      gten : getresflags:=F_LE;
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|                      else
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|                        internalerror(2014082030);
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|                   end
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|                 else
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|                   case nodetype of
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|                      ltn : getresflags:=F_L;
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|                      lten : getresflags:=F_LE;
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|                      gtn : getresflags:=F_G;
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|                      gten : getresflags:=F_GE;
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|                      else
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|                        internalerror(2014082031);
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|                   end;
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|              end
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|            else
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|              begin
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|                 if nf_swapped in flags then
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|                   case nodetype of
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|                      ltn : getresflags:=F_A;
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|                      lten : getresflags:=F_AE;
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|                      gtn : getresflags:=F_B;
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|                      gten : getresflags:=F_BE;
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|                      else
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|                        internalerror(2014082032);
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|                   end
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|                 else
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|                   case nodetype of
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|                      ltn : getresflags:=F_B;
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|                      lten : getresflags:=F_BE;
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|                      gtn : getresflags:=F_A;
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|                      gten : getresflags:=F_AE;
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|                      else
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|                        internalerror(2014082033);
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|                   end;
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|              end;
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|          end;
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|       end;
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| 
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| 
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|     function t68kaddnode.getfloatresflags : tresflags;
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|       begin
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|         case nodetype of
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|           equaln : getfloatresflags:=F_FE;
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|           unequaln : getfloatresflags:=F_FNE;
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|           else
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|             if nf_swapped in flags then
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|               case nodetype of
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|                 ltn : getfloatresflags:=F_FG;
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|                 lten : getfloatresflags:=F_FGE;
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|                 gtn : getfloatresflags:=F_FL;
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|                 gten : getfloatresflags:=F_FLE;
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|                 else
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|                   internalerror(201604260);
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|               end
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|             else
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|               case nodetype of
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|                 ltn : getfloatresflags:=F_FL;
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|                 lten : getfloatresflags:=F_FLE;
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|                 gtn : getfloatresflags:=F_FG;
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|                 gten : getfloatresflags:=F_FGE;
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|                 else
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|                   internalerror(201604261);
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|               end;
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|         end;
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|       end;
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| 
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| 
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| {*****************************************************************************
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|                                 AddFloat
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| *****************************************************************************}
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| 
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|     procedure t68kaddnode.second_addfloat;
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|       var
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|         op    : TAsmOp;
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|         href  : TReference;
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|       begin
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|         pass_left_right;
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| 
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|         case nodetype of
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|           addn :
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|             op:=A_FADD;
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|           muln :
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|             op:=A_FMUL;
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|           subn :
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|             op:=A_FSUB;
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|           slashn :
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|             op:=A_FDIV;
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|           else
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|             internalerror(200403182);
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|         end;
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| 
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|         // get the operands in the correct order, there are no special cases
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|         // here, everything is register-based
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|         if nf_swapped in flags then
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|           swapleftright;
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| 
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|         case current_settings.fputype of
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|           fpu_68881,fpu_coldfire:
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|             begin
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|               { initialize the result }
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|               location_reset(location,LOC_FPUREGISTER,def_cgsize(resultdef));
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| 
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|               { have left in the register, right can be a memory location }
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|               if not (current_settings.fputype = fpu_coldfire) and
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|                  (left.nodetype = realconstn) then
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|                 begin
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|                   location.register := cg.getfpuregister(current_asmdata.CurrAsmList,location.size);
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|                   current_asmdata.CurrAsmList.concat(taicpu.op_realconst_reg(A_FMOVE,tcgsize2opsize[left.location.size],trealconstnode(left).value_real,location.register))
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|                 end
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|               else
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|                 begin
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|                   hlcg.location_force_fpureg(current_asmdata.CurrAsmList,left.location,left.resultdef,true);
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| 
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|                   location.register := cg.getfpuregister(current_asmdata.CurrAsmList,location.size);
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|                   cg.a_loadfpu_reg_reg(current_asmdata.CurrAsmlist,OS_NO,OS_NO,left.location.register,location.register);
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|                 end;
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| 
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|               { emit the actual operation }
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|               case right.location.loc of
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|                 LOC_FPUREGISTER,LOC_CFPUREGISTER:
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|                     current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(op,fpuregopsize,right.location.register,location.register));
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|                 LOC_REFERENCE,LOC_CREFERENCE:
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|                     begin
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|                       if not (current_settings.fputype = fpu_coldfire) and
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|                          (right.nodetype = realconstn) then
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|                         current_asmdata.CurrAsmList.concat(taicpu.op_realconst_reg(op,tcgsize2opsize[right.location.size],trealconstnode(right).value_real,location.register))
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|                       else
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|                         begin
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|                           href:=right.location.reference;
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|                           tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,current_settings.fputype = fpu_coldfire);
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|                           current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(op,tcgsize2opsize[right.location.size],href,location.register));
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|                         end;
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|                     end
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|                 else
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|                   internalerror(2015021501);
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|               end;
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|             end;
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|           else
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|             // softfpu should be handled in pass1, others are not yet supported...
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|             internalerror(2015010201);
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|         end;
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|       end;
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| 
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| 
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|     procedure t68kaddnode.second_cmpfloat;
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|       var
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|         tmpreg : tregister;
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|         ai: taicpu;
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|         href  : TReference;
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|       begin
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|         pass_left_right;
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|         if (nf_swapped in flags) then
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|           swapleftright;
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| 
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|         case current_settings.fputype of
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|           fpu_68881,fpu_coldfire:
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|             begin
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|               { force left fpureg as register, right can be reference }
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| 
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|               { emit compare }
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|               case right.location.loc of
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|                 LOC_FPUREGISTER,LOC_CFPUREGISTER:
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|                     begin
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|                       hlcg.location_force_fpureg(current_asmdata.CurrAsmList,left.location,left.resultdef,true);
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|                       current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_FCMP,fpuregopsize,right.location.register,left.location.register));
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|                     end;
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|                 LOC_REFERENCE,LOC_CREFERENCE:
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|                     begin
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|                       { use FTST, if realconst is 0.0, it would be very had to do this in the
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|                         optimized, because we would need to investigate the referenced value... }
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|                       if (right.nodetype = realconstn) and
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|                          (trealconstnode(right).value_real = 0.0) then
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|                         begin
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|                           if left.location.loc in [LOC_FPUREGISTER,LOC_CFPUREGISTER] then
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|                             current_asmdata.CurrAsmList.concat(taicpu.op_reg(A_FTST,fpuregopsize,left.location.register))
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|                           else
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|                             if left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE] then
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|                               begin
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|                                 href:=left.location.reference;
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|                                 tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,false);
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|                                 current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_FTST,tcgsize2opsize[left.location.size],href))
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|                               end
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|                             else
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|                               internalerror(2016051001);
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|                         end
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|                       else
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|                         begin
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|                           hlcg.location_force_fpureg(current_asmdata.CurrAsmList,left.location,left.resultdef,true);
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|                           if not (current_settings.fputype = fpu_coldfire) and
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|                              (right.nodetype = realconstn) then
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|                             current_asmdata.CurrAsmList.concat(taicpu.op_realconst_reg(A_FCMP,tcgsize2opsize[right.location.size],trealconstnode(right).value_real,left.location.register))
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|                           else
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|                             begin
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|                               href:=right.location.reference;
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|                               tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,current_settings.fputype = fpu_coldfire);
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|                               current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(A_FCMP,tcgsize2opsize[right.location.size],href,left.location.register));
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|                             end;
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|                         end;
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|                     end
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|                 else
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|                   internalerror(2015021502);
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|               end;
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| 
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|               location_reset(location,LOC_FLAGS,OS_NO);
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|               location.resflags:=getfloatresflags;
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|             end;
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|           else
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|             // softfpu should be handled in pass1, others are not yet supported...
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|             internalerror(2015010201);
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|         end;
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|       end;
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| 
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| 
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| 
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| 
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| {*****************************************************************************
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|                                 Smallsets
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| *****************************************************************************}
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| 
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|     procedure t68kaddnode.second_cmpsmallset;
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|      var
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|        tmpreg : tregister;
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|      begin
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|        pass_left_right;
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| 
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|        location_reset(location,LOC_FLAGS,OS_NO);
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| 
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|        if (not(nf_swapped in flags) and
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|            (nodetype = lten)) or
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|           ((nf_swapped in flags) and
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|            (nodetype = gten)) then
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|          swapleftright;
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| 
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|        { Try to keep right as a constant }
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|        if right.location.loc<>LOC_CONSTANT then
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|          hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,true);
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|        hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,true);
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| 
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|        case nodetype of
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|          equaln,
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|          unequaln:
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|            begin
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|              if right.location.loc=LOC_CONSTANT then
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|                current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_CMP,S_L,right.location.value,left.location.register))
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|              else
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|                current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,S_L,right.location.register,left.location.register));
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|              if nodetype=equaln then
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|                location.resflags:=F_E
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|              else
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|                location.resflags:=F_NE;
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|            end;
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|          lten,
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|          gten:
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|            begin
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|              tmpreg:=cg.getintregister(current_asmdata.CurrAsmList,left.location.size);
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|              if right.location.loc=LOC_CONSTANT then
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|                hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,false);
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|              cg.a_op_reg_reg_reg(current_asmdata.CurrAsmList,OP_AND,OS_32,left.location.register,right.location.register,tmpreg);
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|              current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,S_L,tmpreg,right.location.register));
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|              location.resflags:=F_E;
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|            end;
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|          else
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|            internalerror(2013092701);
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|        end;
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|      end;
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| 
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| 
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| {*****************************************************************************
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|                                 Ordinals
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| *****************************************************************************}
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| 
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|     procedure t68kaddnode.second_addordinal;
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|       var
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|         cgop    : topcg;
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|       begin
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|         { if we need to handle overflow checking, fall back to the generic cg }
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|         if (nodetype in [addn,subn,muln]) and
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|            (left.resultdef.typ<>pointerdef) and
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|            (right.resultdef.typ<>pointerdef) and
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|            (cs_check_overflow in current_settings.localswitches) then
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|           begin
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|             inherited;
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|             exit;
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|           end;
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| 
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|         case nodetype of
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|           addn: cgop:=OP_ADD;
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|           xorn: cgop:=OP_XOR;
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|           orn : cgop:=OP_OR;
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|           andn: cgop:=OP_AND;
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|           subn: cgop:=OP_SUB;
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|           muln:
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|             begin
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|               if not(is_signed(left.resultdef)) or
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|                  not(is_signed(right.resultdef)) then
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|                 cgop:=OP_MUL
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|               else
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|                 cgop:=OP_IMUL;
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|             end;
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|           else
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|             internalerror(2013120104);
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|         end;
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| 
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|         pass_left_right;
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|         if (nodetype=subn) and (nf_swapped in flags) then
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|           swapleftright;
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| 
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|         hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);
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| 
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|         { initialize the result }
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|         location_reset(location,LOC_REGISTER,def_cgsize(resultdef));
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|         location.register := cg.getintregister(current_asmdata.CurrAsmList,location.size);
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|         cg.a_load_reg_reg(current_asmdata.CurrAsmlist,left.location.size,location.size,left.location.register,location.register);
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| 
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|         if (location.size <> right.location.size) or
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|            not (right.location.loc in [LOC_REGISTER,LOC_CREGISTER,LOC_CONSTANT,LOC_REFERENCE,LOC_CREFERENCE]) or
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|            (not(CPUM68K_HAS_32BITMUL in cpu_capabilities[current_settings.cputype]) and (nodetype = muln)) or 
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|            ((right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and needs_unaligned(right.location.reference.alignment,def_cgsize(resultdef))) then
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|           hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,true);
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| 
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|         case right.location.loc of
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|           LOC_REGISTER,
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|           LOC_CREGISTER:
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|             cg.a_op_reg_reg(current_asmdata.CurrAsmList,cgop,def_cgsize(resultdef),right.location.register,location.register);
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|           LOC_CONSTANT:
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|             cg.a_op_const_reg(current_asmdata.CurrAsmList,cgop,def_cgsize(resultdef),right.location.value,location.register);
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|           LOC_REFERENCE,
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|           LOC_CREFERENCE:
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|             cg.a_op_ref_reg(current_asmdata.CurrAsmList,cgop,def_cgsize(resultdef),right.location.reference,location.register);
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|         else
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|           internalerror(2016052101);
 | |
|         end;
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|       end;
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| 
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| 
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|     procedure t68kaddnode.second_cmpordinal;
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|      var
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|       unsigned : boolean;
 | |
|       tmpreg : tregister;
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|       opsize : topsize;
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|       cmpsize : tcgsize;
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|       href: treference;
 | |
|      begin
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|        { determine if the comparison will be unsigned }
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|        unsigned:=not(is_signed(left.resultdef)) or
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|                    not(is_signed(right.resultdef));
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|        { this puts constant operand (if any) to the right }
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|        pass_left_right;
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|        { tentatively assume left size (correct for possible TST, will fix later) }
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|        cmpsize:=def_cgsize(left.resultdef);
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|        opsize:=tcgsize2opsize[cmpsize];
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| 
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|        { set result location }
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|        location_reset(location,LOC_FLAGS,OS_NO);
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| 
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|        { see if we can optimize into TST }
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|        if (right.location.loc=LOC_CONSTANT) and (right.location.value=0) then
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|          begin
 | |
|            { Unsigned <0 or >=0 should not reach pass2, most likely }
 | |
|            if (left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and not needs_unaligned(left.location.reference.alignment,cmpsize) then
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|              begin
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|                href:=left.location.reference;
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|                tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,false);
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|                current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_TST,opsize,href));
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|                location_freetemp(current_asmdata.CurrAsmList,left.location);
 | |
|              end
 | |
|            else
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|              begin
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|                hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,true);
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|                if (current_settings.cputype = cpu_mc68000) and isaddressregister(left.location.register) then
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|                  begin
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|                    tmpreg:=cg.getintregister(current_asmdata.CurrAsmList,cmpsize);
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|                    cg.a_load_reg_reg(current_asmdata.CurrAsmList,OS_ADDR,cmpsize,left.location.register,tmpreg);
 | |
|                  end
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|                else
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|                  tmpreg:=left.location.register;
 | |
|                current_asmdata.CurrAsmList.concat(taicpu.op_reg(A_TST,opsize,tmpreg));
 | |
|              end;
 | |
|            location.resflags := getresflags(unsigned);
 | |
|            exit;
 | |
|          end;
 | |
| 
 | |
|        { Coldfire supports byte/word compares only starting with ISA_B,
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|          !!see remark about Qemu weirdness in tcg68k.a_cmp_const_reg_label }
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|        if (opsize<>S_L) and (current_settings.cputype in cpu_coldfire{-[cpu_isa_b,cpu_isa_c,cfv4e]}) then
 | |
|          begin
 | |
|            { 1) Extension is needed for LOC_REFERENCE, but what about LOC_REGISTER ? Perhaps after fixing cg we can assume
 | |
|                 that high bits of registers are correct.
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|              2) Assuming that extension depends only on source signedness --> destination OS_32 is acceptable. }
 | |
|            hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,cgsize_orddef(OS_32),false);
 | |
|            if (right.location.loc<>LOC_CONSTANT) then
 | |
|              hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,cgsize_orddef(OS_32),false);
 | |
|            opsize:=S_L;
 | |
|          end
 | |
|        else if not (left.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
 | |
|          begin
 | |
|            if not (right.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
 | |
|              hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,true)
 | |
|            else
 | |
|              begin
 | |
|                location_swap(left.location,right.location);
 | |
|                toggleflag(nf_swapped);
 | |
|              end;
 | |
|          end;
 | |
| 
 | |
|        if (right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and needs_unaligned(right.location.reference.alignment,cmpsize) then
 | |
|          hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,true);
 | |
| 
 | |
|        { left is now in register }
 | |
|        case right.location.loc of
 | |
|          LOC_CONSTANT:
 | |
|            current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_CMP,opsize,
 | |
|              longint(right.location.value),left.location.register));
 | |
|          LOC_REFERENCE,
 | |
|          LOC_CREFERENCE:
 | |
|            begin
 | |
|              href:=right.location.reference;
 | |
|              tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,false);
 | |
|              current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(A_CMP,opsize,href,
 | |
|                left.location.register));
 | |
|            end;
 | |
|          LOC_REGISTER,
 | |
|          LOC_CREGISTER:
 | |
|            current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,opsize,
 | |
|              right.location.register,left.location.register));
 | |
|        else
 | |
|          hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,true);
 | |
|          current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,opsize,
 | |
|            right.location.register,left.location.register));
 | |
|        end;
 | |
| 
 | |
|        { update location because sides could have been swapped }
 | |
|        location.resflags:=getresflags(unsigned);
 | |
|      end;
 | |
| 
 | |
| 
 | |
| {*****************************************************************************
 | |
|                                 64-bit
 | |
| *****************************************************************************}
 | |
| 
 | |
|     procedure t68kaddnode.second_cmp64bit;
 | |
|       var
 | |
|         truelabel,
 | |
|         falselabel: tasmlabel;
 | |
|         hlab: tasmlabel;
 | |
|         unsigned : boolean;
 | |
|         href: treference;
 | |
| 
 | |
|       procedure firstjmp64bitcmp;
 | |
|         var
 | |
|           oldnodetype : tnodetype;
 | |
|         begin
 | |
|           case nodetype of
 | |
|             ltn,gtn:
 | |
|               begin
 | |
|                 if (hlab<>location.truelabel) then
 | |
|                   cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),location.truelabel);
 | |
|                 { cheat a little bit for the negative test }
 | |
|                 toggleflag(nf_swapped);
 | |
|                 if (hlab<>location.falselabel) then
 | |
|                   cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),location.falselabel);
 | |
|                 toggleflag(nf_swapped);
 | |
|               end;
 | |
|             lten,gten:
 | |
|               begin
 | |
|                 oldnodetype:=nodetype;
 | |
|                 if nodetype=lten then
 | |
|                   nodetype:=ltn
 | |
|                 else
 | |
|                   nodetype:=gtn;
 | |
|                 if (hlab<>location.truelabel) then
 | |
|                   cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),location.truelabel);
 | |
|                 { cheat for the negative test }
 | |
|                 if nodetype=ltn then
 | |
|                   nodetype:=gtn
 | |
|                 else
 | |
|                   nodetype:=ltn;
 | |
|                 if (hlab<>location.falselabel) then
 | |
|                   cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),location.falselabel);
 | |
|                 nodetype:=oldnodetype;
 | |
|               end;
 | |
|             equaln:
 | |
|               cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,location.falselabel);
 | |
|             unequaln:
 | |
|               cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,location.truelabel);
 | |
|           end;
 | |
|         end;
 | |
| 
 | |
|       procedure secondjmp64bitcmp;
 | |
|         begin
 | |
|           case nodetype of
 | |
|             ltn,gtn,lten,gten:
 | |
|               begin
 | |
|                 cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(true),location.truelabel);
 | |
|                 cg.a_jmp_always(current_asmdata.CurrAsmList,location.falselabel);
 | |
|               end;
 | |
|             equaln:
 | |
|               begin
 | |
|                 cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,location.falselabel);
 | |
|                 cg.a_jmp_always(current_asmdata.CurrAsmList,location.truelabel);
 | |
|               end;
 | |
|             unequaln:
 | |
|               begin
 | |
|                 cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,location.truelabel);
 | |
|                 cg.a_jmp_always(current_asmdata.CurrAsmList,location.falselabel);
 | |
|               end;
 | |
|           end;
 | |
|         end;
 | |
| 
 | |
|       begin
 | |
|         truelabel:=nil;
 | |
|         falselabel:=nil;
 | |
|         { This puts constant operand (if any) to the right }
 | |
|         pass_left_right;
 | |
| 
 | |
|         unsigned:=not(is_signed(left.resultdef)) or
 | |
|                   not(is_signed(right.resultdef));
 | |
| 
 | |
|         current_asmdata.getjumplabel(truelabel);
 | |
|         current_asmdata.getjumplabel(falselabel);
 | |
|         location_reset_jump(location,truelabel,falselabel);
 | |
| 
 | |
|         { Relational compares against constants having low dword=0 can omit the
 | |
|           second compare based on the fact that any unsigned value is >=0 }
 | |
|         hlab:=nil;
 | |
|         if (right.location.loc=LOC_CONSTANT) and
 | |
|            (lo(right.location.value64)=0) then
 | |
|           begin
 | |
|             case getresflags(true) of
 | |
|               F_AE: hlab:=location.truelabel;
 | |
|               F_B:  hlab:=location.falselabel;
 | |
|             end;
 | |
|           end;
 | |
| 
 | |
|         if (right.location.loc=LOC_CONSTANT) and (right.location.value64=0) and
 | |
|           (nodetype in [equaln,unequaln]) then
 | |
|           begin
 | |
|             if (left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and not needs_unaligned(left.location.reference.alignment,OS_INT) then
 | |
|               begin
 | |
|                 href:=left.location.reference;
 | |
|                 tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,false);
 | |
|                 current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_TST,S_L,href));
 | |
|                 firstjmp64bitcmp;
 | |
|                 inc(href.offset,4);
 | |
|                 current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_TST,S_L,href));
 | |
|                 secondjmp64bitcmp;
 | |
|                 location_freetemp(current_asmdata.CurrAsmList,left.location);
 | |
|               end
 | |
|             else
 | |
|               begin
 | |
|                 hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,true);
 | |
|                 current_asmdata.CurrAsmList.concat(taicpu.op_reg(A_TST,S_L,left.location.register64.reglo));
 | |
|                 firstjmp64bitcmp;
 | |
|                 current_asmdata.CurrAsmList.concat(taicpu.op_reg(A_TST,S_L,left.location.register64.reghi));
 | |
|                 secondjmp64bitcmp;
 | |
|               end;
 | |
|             exit;
 | |
|           end;
 | |
| 
 | |
|         { left and right no register?  }
 | |
|         { then one must be demanded    }
 | |
|         if not (left.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
 | |
|           begin
 | |
|             if not (right.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
 | |
|               hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,true)
 | |
|             else
 | |
|               begin
 | |
|                 location_swap(left.location,right.location);
 | |
|                 toggleflag(nf_swapped);
 | |
|               end;
 | |
|           end;
 | |
| 
 | |
|         if (right.location.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and needs_unaligned(right.location.reference.alignment,OS_INT) then
 | |
|           hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,right.resultdef,true);
 | |
| 
 | |
|         { left is now in register }
 | |
|         case right.location.loc of
 | |
|           LOC_REGISTER,LOC_CREGISTER:
 | |
|             begin
 | |
|               current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,S_L,right.location.register64.reghi,left.location.register64.reghi));
 | |
|               firstjmp64bitcmp;
 | |
|               current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,S_L,right.location.register64.reglo,left.location.register64.reglo));
 | |
|               secondjmp64bitcmp;
 | |
|             end;
 | |
|           LOC_REFERENCE,LOC_CREFERENCE:
 | |
|             begin
 | |
|               href:=right.location.reference;
 | |
|               tcg68k(cg).fixref(current_asmdata.CurrAsmList,href,false);
 | |
|               current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(A_CMP,S_L,href,left.location.register64.reghi));
 | |
|               firstjmp64bitcmp;
 | |
|               inc(href.offset,4);
 | |
|               current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(A_CMP,S_L,href,left.location.register64.reglo));
 | |
|               secondjmp64bitcmp;
 | |
|               location_freetemp(current_asmdata.CurrAsmList,right.location);
 | |
|             end;
 | |
|           LOC_CONSTANT:
 | |
|             begin
 | |
|               current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_CMP,S_L,aint(hi(right.location.value64)),left.location.register64.reghi));
 | |
|               firstjmp64bitcmp;
 | |
|               if assigned(hlab) then
 | |
|                 cg.a_jmp_always(current_asmdata.CurrAsmList,hlab)
 | |
|               else
 | |
|                 begin
 | |
|                   current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_CMP,S_L,aint(lo(right.location.value64)),left.location.register64.reglo));
 | |
|                   secondjmp64bitcmp;
 | |
|                 end;
 | |
|             end;
 | |
|         else
 | |
|           InternalError(2014072501);
 | |
|         end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| begin
 | |
|    caddnode:=t68kaddnode;
 | |
| end.
 |