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	 1c01d52ea6
			
		
	
	
		1c01d52ea6
		
	
	
	
	
		
			
			* Moved nestedprocs from tcgprocinfo to tprocinfo, in order to be able to access the entire nested procedure hierarchy without depending on psub.pas or code generator. * Creating an instance of tprocinfo automatically inserts it into list of parent's nested procedures. * nestedprocs list is created on demand. Public read-only access is provided by has_nestedprocs and get_first_nestedproc functions. + Method destroy_tree is provided for destroying the entire hierarchy of procinfo's. It can be called on any procinfo object in the tree. + Also added methods save_jump_labels and restore_jump_labels for asmlabel maintenance, which is currently being repeatedly done all over the codegenerator. git-svn-id: trunk@17197 -
		
			
				
	
	
		
			667 lines
		
	
	
		
			25 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
			
		
		
	
	
			667 lines
		
	
	
		
			25 KiB
		
	
	
	
		
			ObjectPascal
		
	
	
	
	
	
| {
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|     Copyright (c) 1998-2002 by Florian Klaempfl and Jonas Maebe
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| 
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|     This unit handles register variable allocation
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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 regvars;
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| 
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| {$i fpcdefs.inc}
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| 
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| interface
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| 
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|     uses
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|        aasmbase,aasmtai,aasmdata,aasmcpu,
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|        node,
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|        symsym,
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|        cpubase, cgbase, tgobj;
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| 
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| {$ifdef OLDREGVARS}
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|     procedure assign_regvars(p: tnode);
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|     procedure load_regvars(asml: TAsmList; p: tnode);
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|     procedure cleanup_regvars(asml: TAsmList);
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|     procedure store_regvar(asml: TAsmList; reg: tregister);
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|     procedure load_regvar(asml: TAsmList; vsym: tvarsym);
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|     procedure load_regvar_reg(asml: TAsmList; reg: tregister);
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|     procedure load_all_regvars(asml: TAsmList);
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|     procedure free_regvars(list: TAsmList);
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| {    procedure translate_regvars(list: TAsmList); }
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| {$endif OLDREGVARS}
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| 
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| {$ifdef i386}
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| (*
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|     procedure sync_regvars_other(list1, list2: TAsmList; const regvarsloaded1,
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|       regvarsloaded2: regvarother_booleanarray);
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|     procedure sync_regvars_int(list1, list2: TAsmList; const regvarsloaded1,
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|       regvarsloaded2: Tsuperregisterset);
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| *)
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| {$endif i386}
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| 
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| implementation
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| 
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|     uses
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|       globtype,systems,comphook,
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|       cutils,cclasses,verbose,globals,
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|       psub,
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|       symconst,symbase,symtype,symdef,paramgr,defutil,
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|       cpuinfo,cgobj,procinfo;
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| 
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| {$ifdef OLDREGVARS}
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|     procedure searchregvars(p : tnamedindexitem;arg:pointer);
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|       var
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|          i,j,k : longint;
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|          parasym : boolean;
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|       begin
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|          parasym:=pboolean(arg)^;
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|          if (tsym(p).typ=varsym) and ((tvarsym(p).varregable <> vr_none) or
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|              ((tvarsym(p).varspez in [vs_var,vs_const,vs_out,vs_constref]) and
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|               paramanager.push_addr_param(tvarsym(p).varspez,tvarsym(p).vardef,current_procinfo.procdef.proccalloption))) and
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|             not tvarsym(p).vardef.needs_inittable then
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|            begin
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|               j:=tvarsym(p).refs;
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|               { walk through all momentary register variables }
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|               for i:=1 to maxvarregs do
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|                 begin
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|                   with pregvarinfo(current_procinfo.procdef.regvarinfo)^ do
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|                    if ((regvars[i]=nil) or (j>regvars_refs[i])) and (j>0) then
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|                      begin
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|                         for k:=maxvarregs-1 downto i do
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|                           begin
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|                              regvars[k+1]:=regvars[k];
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|                              regvars_para[k+1]:=regvars_para[k];
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|                              regvars_refs[k+1]:=regvars_refs[k];
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|                           end;
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|                         { calc the new refs
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|                         tvarsym(p).refs:=j; }
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|                         regvars[i]:=tsym(p);
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|                         regvars_para[i]:=parasym;
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|                         regvars_refs[i]:=j;
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|                         break;
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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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|     procedure searchfpuregvars(p : tnamedindexitem;arg:pointer);
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|       var
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|          i,j,k : longint;
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|          parasym : boolean;
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|       begin
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|          parasym:=pboolean(arg)^;
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|          if (tsym(p).typ=varsym) and (tvarsym(p).varregable <> vr_none) then
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|            begin
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|               j:=tvarsym(p).refs;
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|               { parameter get a less value }
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|               { walk through all momentary register variables }
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|               for i:=1 to maxfpuvarregs do
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|                 begin
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|                   with pregvarinfo(current_procinfo.procdef.regvarinfo)^ do
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|                    if ((fpuregvars[i]=nil) or (j>fpuregvars_refs[i])) and (j>0) then
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|                      begin
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|                         for k:=maxfpuvarregs-1 downto i do
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|                           begin
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|                              fpuregvars[k+1]:=fpuregvars[k];
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|                              fpuregvars_para[k+1]:=fpuregvars_para[k];
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|                              fpuregvars_refs[k+1]:=fpuregvars_refs[k];
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|                           end;
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|                         { calc the new refs
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|                         tvarsym(p).refs:=j; }
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|                         fpuregvars[i]:=tsym(p);
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|                         fpuregvars_para[i]:=parasym;
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|                         fpuregvars_refs[i]:=j;
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|                         break;
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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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|     procedure assign_regvars(p: tnode);
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|           { register variables }
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|     var
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| {$ifndef i386}
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|       hp: tparaitem;
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| {$endif i386}
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|       regvarinfo: pregvarinfo;
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|       i: longint;
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|       parasym : boolean;
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|       siz : tcgsize;
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|     begin
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|       { max. optimizations     }
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|       { only if no asm is used }
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|       { and no try statement   }
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|       if (cs_opt_regvar in current_settings.optimizerswitches) and
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|         { we have to store regvars back to memory in this case (the nested }
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|         { procedures can access the variables of the parent)               }
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|         (not current_procinfo.has_nestedprocs) and
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|          not(pi_has_assembler_block in current_procinfo.flags) and
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|          not(pi_uses_exceptions in current_procinfo.flags) then
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|         begin
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|           new(regvarinfo);
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|           fillchar(regvarinfo^,sizeof(regvarinfo^),0);
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|           current_procinfo.procdef.regvarinfo := regvarinfo;
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|           if (p.registersint<maxvarregs) then
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|             begin
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|               parasym:=false;
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|               symtablestack.foreach_static(searchregvars,@parasym);
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|               { copy parameter into a register ? }
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|               parasym:=true;
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|               symtablestack.next.foreach_static(searchregvars,@parasym);
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|               { hold needed registers free }
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|               for i:=maxvarregs downto maxvarregs-p.registersint+1 do
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|                 begin
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|                   regvarinfo^.regvars[i]:=nil;
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|                   regvarinfo^.regvars_para[i] := false;
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|                 end;
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|               { now assign register }
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|               for i:=1 to maxvarregs-p.registersint do
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|                 begin
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|                   if assigned(regvarinfo^.regvars[i]) and
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|                     { currently we assume we can use registers for all }
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|                     { regvars if procedure does no call                }
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|                      (not(pi_do_call in current_procinfo.flags) or
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|                     { otherwise, demand some (arbitrary) minimum usage }
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|                       (tvarsym(regvarinfo^.regvars[i]).refs > 100)) then
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|                     begin
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|                       { register is no longer available for }
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|                       { expressions                          }
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|                       { search the register which is the most }
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|                       { unused                                }
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| 
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|                       { call by reference/const ? }
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|                       if paramanager.push_addr_param(tvarsym(regvarinfo^.regvars[i]).varspez,tvarsym(regvarinfo^.regvars[i]).vardef,current_procinfo.procdef.proccalloption) then
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|                         siz:=OS_32
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|                       else
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|                        if (tvarsym(regvarinfo^.regvars[i]).vardef.typ in [orddef,enumdef]) and
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|                           (tvarsym(regvarinfo^.regvars[i]).vardef.size=1) then
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|                         siz:=OS_8
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|                       else
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|                        if (tvarsym(regvarinfo^.regvars[i]).vardef.typ in [orddef,enumdef]) and
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|                           (tvarsym(regvarinfo^.regvars[i]).vardef.size=2) then
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|                         siz:=OS_16
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|                       else
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|                         siz:=OS_32;
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| 
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|                       { allocate a register for this regvar }
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|                       tvarsym(regvarinfo^.regvars[i]).localloc.register:=cg.getintregister(current_asmdata.CurrAsmList,siz);
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|                       tvarsym(regvarinfo^.regvars[i]).localloc.loc:=LOC_REGISTER;
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|                       { and make sure it can't be freed }
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| {                      rg.makeregvarint(getsupreg(regvarinfo^.regvars[i].localloc.register));}
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|                     end
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|                   else
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|                     begin
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|                       regvarinfo^.regvars[i] := nil;
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|                       regvarinfo^.regvars_para[i] := false;
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|                     end;
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|                 end;
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|             end;
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|             if ((p.registersfpu+1)<maxfpuvarregs) then
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|               begin
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|                 parasym:=false;
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|                 symtablestack.foreach_static(searchfpuregvars,@parasym);
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| {$ifndef i386}
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|                 { this code should be never enabled because     }
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|                 { 1. the caller loads parameters into registers }
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|                 { 2. (later) the CSE loads a parameter into a   }
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|                 {    register, if necessary                     }
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|                 {                                        (FK)   }
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|                 { copy parameter into a register ? }
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|                 parasym:=true;
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|                 symtablestack.next.foreach_static(searchregvars,@parasym);
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| {$endif i386}
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|                 { hold needed registers free }
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| 
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|                 { in non leaf procedures we must be very careful }
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|                 { with assigning registers                       }
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| {$ifdef i386}
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|                 if current_settings.maxfpuregisters=-1 then
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|                   begin
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|                    if (pi_do_call in current_procinfo.flags) then
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|                      begin
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|                       for i:=maxfpuvarregs downto 2 do
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|                         regvarinfo^.fpuregvars[i]:=nil;
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|                      end
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|                    else
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| {$endif i386}
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|                      begin
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|                       for i:=maxfpuvarregs downto maxfpuvarregs-p.registersfpu do
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|                         regvarinfo^.fpuregvars[i]:=nil;
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|                      end;
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| {$ifdef i386}
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|                   end
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|                 else
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|                   begin
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|                     for i:=current_settings.maxfpuregisters+1 to maxfpuvarregs do
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|                       regvarinfo^.fpuregvars[i]:=nil;
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|                   end;
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| {$endif i386}
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|                 { now assign register }
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|                 for i:=1 to maxfpuvarregs do
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|                   begin
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|                    if assigned(regvarinfo^.fpuregvars[i]) then
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|                      begin
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| {$ifdef i386}
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|                        { reserve place on the FPU stack }
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|                        {$error fixme x86 fpuregvars}
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| {                       regvarinfo^.fpuregvars[i].localloc.register:=trgcpu(rg).correct_fpuregister(NR_ST0,i);}
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| {$else i386}
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| {$ifdef x86_64}
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| {$endif x86_64}
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|                        begin
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|                          tvarsym(regvarinfo^.fpuregvars[i]).localloc.register:=cg.getfpuregister(current_asmdata.CurrAsmList,OS_F64);
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|                          tvarsym(regvarinfo^.fpuregvars[i]).localloc.loc:=LOC_FPUREGISTER;
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| {                         rg.makeregvarother(regvarinfo^.fpuregvars[i].localloc.register);}
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|                        end;
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| {$endif i386}
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|                      end;
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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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| 
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|     procedure store_regvar(asml: TAsmList; reg: tregister);
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|     var
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|       i: longint;
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|       cgsize : tcgsize;
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|       r : tregister;
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|       hr: treference;
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|       regvarinfo: pregvarinfo;
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|       vsym: tvarsym;
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|       regidx : tregisterindex;
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|       supreg : tsuperregister;
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|     begin
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| {$ifdef i386}
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|       regvarinfo := pregvarinfo(current_procinfo.procdef.regvarinfo);
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|       if not assigned(regvarinfo) then
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|         exit;
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|       if getregtype(reg)=R_INTREGISTER then
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|         begin
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|           supreg:=getsupreg(reg);
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|           for i := 1 to maxvarregs do
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|             if assigned(regvarinfo^.regvars[i]) and
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|                (getsupreg(tvarsym(regvarinfo^.regvars[i]).localloc.register)=supreg) then
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|               begin
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|                 { TODO: fixme regvar_loaded_int}
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| (*                if supreg in rg.regvar_loaded_int then
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|                   begin
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|                     vsym := tvarsym(regvarinfo^.regvars[i]);
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|                     { we only have to store the regvar back to memory if it's }
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|                     { possible that it's been modified  (JM)                  }
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|                     if not(vsym.varspez in [vs_const,vs_var,vs_out]) then
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|                       begin
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| { TODO: FIXME Check vsym.localloc for regvars}
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| //                        reference_reset_base(hr,current_procinfo.framepointer,vsym.adjusted_address);
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|                         cgsize:=def_cgsize(vsym.vardef);
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|                         cg.a_load_reg_ref(asml,cgsize,cgsize,vsym.localloc.register,hr);
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|                       end;
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|                     asml.concat(tai_regalloc.dealloc(vsym.localloc.register));
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|                     exclude(rg.regvar_loaded_int,supreg);
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|                   end;
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| *)
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|                 break;
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|               end;
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|         end
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|       else
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|         begin
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|           for i := 1 to maxvarregs do
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|             if assigned(regvarinfo^.regvars[i]) then
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|               begin
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|                 { TODO: fixme regvars}
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| (*
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|                 r:=rg.makeregsize(regvarinfo^.regvars[i].localloc.register,OS_INT);
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|                 if (r = reg) then
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|                   begin
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|                     regidx:=findreg_by_number(r);
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|                     if rg.regvar_loaded_other[regidx] then
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|                       begin
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|                         vsym := tvarsym(regvarinfo^.regvars[i]);
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|                         { we only have to store the regvar back to memory if it's }
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|                         { possible that it's been modified  (JM)                  }
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|                         if not(vsym.varspez in [vs_const,vs_var,vs_out]) then
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|                           begin
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| { TODO: FIXME Check vsym.localloc for regvars}
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| //                            reference_reset_base(hr,current_procinfo.framepointer,vsym.adjusted_address);
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|                             cgsize:=def_cgsize(vsym.vardef);
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|                             cg.a_load_reg_ref(asml,cgsize,cgsize,vsym.localloc.register,hr);
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|                           end;
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|                         asml.concat(tai_regalloc.dealloc(vsym.localloc.register));
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|                         rg.regvar_loaded_other[regidx] := false;
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|                       end;
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|                     break;
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|                   end;
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| *)
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|               end;
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|         end;
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| {$endif i386}
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|     end;
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| 
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|     procedure load_regvar(asml: TAsmList; vsym: tvarsym);
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|     var
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|       hr: treference;
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|       opsize: tcgsize;
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|       r,
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|       reg : tregister;
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|       regidx : tregisterindex;
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|     begin
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| {$ifndef i386}
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|       exit;
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| {$endif i386}
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|       reg:=vsym.localloc.register;
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|       { TODO: fixme regvars}
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| (*
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|       if getregtype(reg)=R_INTREGISTER then
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|         begin
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| 
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|           if not(getsupreg(reg) in rg.regvar_loaded_int) then
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|             begin
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|               asml.concat(tai_regalloc.alloc(reg));
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| { TODO: FIXME Check vsym.localloc for regvars}
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| //              reference_reset_base(hr,current_procinfo.framepointer,vsym.adjusted_address);
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|               if paramanager.push_addr_param(vsym.varspez,vsym.vardef,current_procinfo.procdef.proccalloption) then
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|                 opsize := OS_ADDR
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|               else
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|                 opsize := def_cgsize(vsym.vardef);
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|               cg.a_load_ref_reg(asml,opsize,opsize,hr,reg);
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|               include(rg.regvar_loaded_int,getsupreg(reg));
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|             end;
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|         end
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|       else
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|         begin
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|           r:=rg.makeregsize(reg,OS_INT);
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|           regidx:=findreg_by_number(r);
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|           if not rg.regvar_loaded_other[regidx] then
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|             begin
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|               asml.concat(tai_regalloc.alloc(reg));
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| { TODO: FIXME Check vsym.localloc for regvars}
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| //              reference_reset_base(hr,current_procinfo.framepointer,vsym.adjusted_address);
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|               if paramanager.push_addr_param(vsym.varspez,vsym.vardef,current_procinfo.procdef.proccalloption) then
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|                 opsize := OS_ADDR
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|               else
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|                 opsize := def_cgsize(vsym.vardef);
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|               cg.a_load_ref_reg(asml,opsize,opsize,hr,reg);
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|               rg.regvar_loaded_other[regidx] := true;
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|             end;
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|         end;
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| *)
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|     end;
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| 
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|     procedure load_regvar_reg(asml: TAsmList; reg: tregister);
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|     var
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|       i: longint;
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|       regvarinfo: pregvarinfo;
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|       reg_spare : tregister;
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|       supreg : tsuperregister;
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|     begin
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| {
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|       regvarinfo := pregvarinfo(current_procinfo.procdef.regvarinfo);
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|       if not assigned(regvarinfo) then
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|         exit;
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|       if getregtype(reg)=R_INTREGISTER then
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|         begin
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|           supreg:=getsupreg(reg);
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|           for i := 1 to maxvarregs do
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|             if assigned(regvarinfo^.regvars[i]) and
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|                (getsupreg(regvarinfo^.regvars[i].localloc.register) = supreg) then
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|               load_regvar(asml,tvarsym(regvarinfo^.regvars[i]))
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|         end
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|       else
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|         begin
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|           reg_spare := cg.makeregsize(reg,OS_INT);
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|           for i := 1 to maxvarregs do
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|             if assigned(regvarinfo^.regvars[i]) and
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|                (cg.makeregsize(regvarinfo^.regvars[i].localloc.register,OS_INT) = reg_spare) then
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|               load_regvar(asml,tvarsym(regvarinfo^.regvars[i]))
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|         end;
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| }
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|     end;
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| 
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|     procedure load_all_regvars(asml: TAsmList);
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| {
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|     var
 | |
|       i: longint;
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|       regvarinfo: pregvarinfo;
 | |
| }
 | |
|     begin
 | |
| {
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|       regvarinfo := pregvarinfo(current_procinfo.procdef.regvarinfo);
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|       if not assigned(regvarinfo) then
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|         exit;
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|       for i := 1 to maxvarregs do
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|         if assigned(regvarinfo^.regvars[i]) then
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|           load_regvar(asml,tvarsym(regvarinfo^.regvars[i]))
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| }
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|     end;
 | |
| 
 | |
| 
 | |
|     procedure load_regvars(asml: TAsmList; p: tnode);
 | |
|     var
 | |
|       i: longint;
 | |
|       regvarinfo: pregvarinfo;
 | |
|     begin
 | |
|       if (cs_opt_regvar in current_settings.optimizerswitches) and
 | |
|          not(pi_has_assembler_block in current_procinfo.flags) and
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|          not(pi_uses_exceptions in current_procinfo.flags) then
 | |
|         begin
 | |
|           regvarinfo := pregvarinfo(current_procinfo.procdef.regvarinfo);
 | |
|           { can happen when inlining assembler procedures (JM) }
 | |
|           if not assigned(regvarinfo) then
 | |
|             exit;
 | |
|           for i:=1 to maxfpuvarregs do
 | |
|             begin
 | |
|               if assigned(regvarinfo^.fpuregvars[i]) then
 | |
|                 begin
 | |
| {$ifdef i386}
 | |
|                   { reserve place on the FPU stack }
 | |
|                   { TODO: fixme fpustack}
 | |
| (*
 | |
|                   regvarinfo^.fpuregvars[i].localloc.register:=trgcpu(rg).correct_fpuregister(NR_ST0,i-1);
 | |
| *)
 | |
|                   asml.concat(Taicpu.op_none(A_FLDZ,S_NO));
 | |
| {$endif i386}
 | |
|                 end;
 | |
|             end;
 | |
| {$ifdef i386}
 | |
|           if assigned(p) then
 | |
|             if cs_asm_source in current_settings.globalswitches then
 | |
|               asml.insert(tai_comment.Create(strpnew(tostr(p.registersfpu)+
 | |
|               ' registers on FPU stack used by temp. expressions')));
 | |
| {$endif i386}
 | |
| {
 | |
|           for i:=1 to maxfpuvarregs do
 | |
|             begin
 | |
|                if assigned(regvarinfo^.fpuregvars[i]) then
 | |
|                  begin
 | |
|                     if cs_asm_source in current_settings.globalswitches then
 | |
|                       asml.insert(tai_comment.Create(strpnew(regvarinfo^.fpuregvars[i].name+
 | |
|                         ' with weight '+tostr(regvarinfo^.fpuregvars[i].refs)+' assigned to register '+
 | |
|                         std_regname(regvarinfo^.fpuregvars[i].localloc.register))));
 | |
|                     if (status.verbosity and v_debug)=v_debug then
 | |
|                       Message3(cg_d_register_weight,std_regname(regvarinfo^.fpuregvars[i].localloc.register),
 | |
|                         tostr(regvarinfo^.fpuregvars[i].refs),regvarinfo^.fpuregvars[i].name);
 | |
|                  end;
 | |
|             end;
 | |
|           if cs_asm_source in current_settings.globalswitches then
 | |
|             asml.insert(tai_comment.Create(strpnew('Register variable assignment:')));
 | |
| }
 | |
|         end;
 | |
|     end;
 | |
| 
 | |
| {$ifdef i386}
 | |
| (*
 | |
|     procedure sync_regvars_other(list1, list2: TAsmList; const regvarsloaded1,
 | |
|       regvarsloaded2: regvarother_booleanarray);
 | |
|     var
 | |
|       counter: tregisterindex;
 | |
|     begin
 | |
|       for counter := low(rg.regvar_loaded_other) to high(rg.regvar_loaded_other) do
 | |
|         begin
 | |
|            rg.regvar_loaded_other[counter] := regvarsloaded1[counter] and
 | |
|              regvarsloaded2[counter];
 | |
|            if regvarsloaded1[counter] xor regvarsloaded2[counter] then
 | |
|              if regvarsloaded1[counter] then
 | |
|                load_regvar_reg(list2,counter)
 | |
|              else
 | |
|                load_regvar_reg(list1,counter);
 | |
|         end;
 | |
|     end;
 | |
| 
 | |
| 
 | |
|     procedure sync_regvars_int(list1, list2: TAsmList; const regvarsloaded1,
 | |
|       regvarsloaded2: Tsuperregisterset);
 | |
|     var
 | |
|       i : longint;
 | |
|       r : tregister;
 | |
|     begin
 | |
|       for i:=1 to maxvarregs do
 | |
|         begin
 | |
|           r:=newreg(R_INTREGISTER,varregs[i],R_SUBWHOLE);
 | |
|           if (varregs[i] in regvarsloaded1) and
 | |
|              not(varregs[i] in regvarsloaded2) then
 | |
|             load_regvar_reg(list2,r)
 | |
|           else
 | |
|             if (varregs[i] in regvarsloaded2) and
 | |
|                not(varregs[i] in regvarsloaded1) then
 | |
|               load_regvar_reg(list1,r);
 | |
|         end;
 | |
|     end;
 | |
| *)
 | |
| {$endif i386}
 | |
| 
 | |
| 
 | |
|     procedure cleanup_regvars(asml: TAsmList);
 | |
|     var
 | |
|       i: longint;
 | |
|       reg : tregister;
 | |
|       regidx : tregisterindex;
 | |
|     begin
 | |
|       { can happen when inlining assembler procedures (JM) }
 | |
|       if not assigned(current_procinfo.procdef.regvarinfo) then
 | |
|         exit;
 | |
|       if (cs_opt_regvar in current_settings.optimizerswitches) and
 | |
|          not(pi_has_assembler_block in current_procinfo.flags) and
 | |
|          not(pi_uses_exceptions in current_procinfo.flags) then
 | |
|         with pregvarinfo(current_procinfo.procdef.regvarinfo)^ do
 | |
|           begin
 | |
| {$ifdef i386}
 | |
|             for i:=1 to maxfpuvarregs do
 | |
|               if assigned(fpuregvars[i]) then
 | |
|                 { ... and clean it up }
 | |
|                 asml.concat(Taicpu.op_reg(A_FSTP,S_NO,NR_ST0));
 | |
| {$endif i386}
 | |
| (*
 | |
|             for i := 1 to maxvarregs do
 | |
|              begin
 | |
|                if assigned(regvars[i]) then
 | |
|                 begin
 | |
|                   reg:=regvars[i].localloc.register;
 | |
|                   if getregtype(reg)=R_INTREGISTER then
 | |
|                     begin
 | |
|                     end
 | |
|                   else
 | |
|                     begin
 | |
|                       reg:=cg.makeregsize(reg,OS_INT);
 | |
|                       regidx:=findreg_by_number(reg);
 | |
|                       { TODO: fixme regvar dealloc}
 | |
| {
 | |
|                       if (rg.regvar_loaded_other[regidx]) then
 | |
|                        asml.concat(tai_regalloc.dealloc(reg));
 | |
| }
 | |
|                     end;
 | |
|                 end;
 | |
|              end;
 | |
| *)
 | |
|           end;
 | |
|     end;
 | |
| 
 | |
| {
 | |
| 
 | |
|     Note: this one can't really be "fixed": register colouring happens after
 | |
|       stabs generation. It could still be useful to generate the "var X is
 | |
|       assigned to register Y with weight ZZZ" messages though
 | |
| 
 | |
|     procedure translate_regvars(list: TAsmList);
 | |
|       var
 | |
|         i: longint;
 | |
|         r: tregister;
 | |
|       begin
 | |
|         if not assigned(current_procinfo.procdef.regvarinfo) then
 | |
|           exit;
 | |
|         with pregvarinfo(current_procinfo.procdef.regvarinfo)^ do
 | |
|           begin
 | |
|             for i := 1 to maxvarregs do
 | |
|               if assigned(regvars[i]) then
 | |
|                 begin
 | |
|                   cg.rg[R_INTREGISTER].translate_register(tvarsym(regvars[i]).localloc.register);
 | |
|                   r:=tvarsym(regvars[i]).localloc.register;
 | |
|                   if cs_asm_source in current_settings.globalswitches then
 | |
|                    list.insert(tai_comment.Create(strpnew(tvarsym(regvars[i]).name+
 | |
|                     ' with weight '+tostr(tvarsym(regvars[i]).refs)+' assigned to register '+
 | |
|                     std_regname(r))));
 | |
|                   Message3(cg_d_register_weight,std_regname(r),
 | |
|                     tostr(tvarsym(regvars[i]).refs),tvarsym(regvars[i]).name);
 | |
|                 end;
 | |
|             for i := 1 to maxfpuvarregs do
 | |
|               if assigned(fpuregvars[i]) then
 | |
|                 begin
 | |
|                   cg.rg[R_FPUREGISTER].translate_register(tvarsym(regvars[i]).localloc.register);
 | |
|                   r:=tvarsym(fpuregvars[i]).localloc.register;
 | |
|                   if cs_asm_source in current_settings.globalswitches then
 | |
|                    list.insert(tai_comment.Create(strpnew(tvarsym(fpuregvars[i]).name+
 | |
|                     ' with weight '+tostr(tvarsym(fpuregvars[i]).refs)+' assigned to register '+
 | |
|                     std_regname(r))));
 | |
|                   Message3(cg_d_register_weight,std_regname(r),
 | |
|                     tostr(tvarsym(fpuregvars[i]).refs),tvarsym(fpuregvars[i]).name);
 | |
|                 end;
 | |
|           end;
 | |
|       end;
 | |
| }
 | |
| 
 | |
|     procedure free_regvars(list: TAsmList);
 | |
|       var
 | |
|         i: longint;
 | |
|         reg: tregister;
 | |
|         size: tcgsize;
 | |
|       begin
 | |
|         if not assigned(current_procinfo.procdef.regvarinfo) then
 | |
|           exit;
 | |
|         with pregvarinfo(current_procinfo.procdef.regvarinfo)^ do
 | |
|           begin
 | |
|             for i := 1 to maxvarregs do
 | |
|               if assigned(regvars[i]) then
 | |
|                 begin
 | |
|                   reg:=cg.makeregsize(list,tvarsym(regvars[i]).localloc.register,OS_INT);
 | |
|                   cg.a_load_reg_reg(list,OS_INT,OS_INT,reg,reg);
 | |
|                 end;
 | |
|             for i := 1 to maxfpuvarregs do
 | |
|               if assigned(fpuregvars[i]) then
 | |
|                 begin
 | |
|                   reg:=tvarsym(fpuregvars[i]).localloc.register;
 | |
|                   size:=reg_cgsize(reg);
 | |
|                   cg.a_loadfpu_reg_reg(list,size,reg,reg);
 | |
|                 end;
 | |
|           end;
 | |
|       end;
 | |
| 
 | |
| 
 | |
| {$endif OLDREGVARS}
 | |
| 
 | |
| 
 | |
| end.
 |