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https://gitlab.com/freepascal.org/fpc/source.git
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256 lines
8.5 KiB
ObjectPascal
256 lines
8.5 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2003 by Florian Klaempfl
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This unit implements the arm specific class for the register
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allocator
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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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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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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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unit rgcpu;
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{$i fpcdefs.inc}
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interface
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uses
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aasmbase,aasmtai,aasmcpu,
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cgbase,
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cpubase,
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rgobj;
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type
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trgcpu = class(trgobj)
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procedure do_spill_read(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);override;
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procedure do_spill_written(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);override;
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procedure do_spill_readwritten(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);override;
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end;
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trgintcpu = class(trgcpu)
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procedure add_cpu_interferences(p : tai);override;
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end;
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implementation
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uses
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verbose, cutils,
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cgutils,cgobj,
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procinfo;
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procedure trgcpu.do_spill_read(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);
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var
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helpins: tai;
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tmpref,ref : treference;
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helplist : taasmoutput;
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l : tasmlabel;
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tmpreg : tregister;
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begin
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ref:=spilltemplist[regs[regidx].orgreg];
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if abs(ref.offset)>4095 then
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begin
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helplist:=taasmoutput.create;
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reference_reset(tmpref);
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{ create consts entry }
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objectlibrary.getlabel(l);
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cg.a_label(current_procinfo.aktlocaldata,l);
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tmpref.symboldata:=current_procinfo.aktlocaldata.last;
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current_procinfo.aktlocaldata.concat(tai_const.Create_32bit(ref.offset));
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{ load consts entry }
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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getregisterinline(helplist,pos,defaultsub,tmpreg)
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else
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tmpreg:=cg.getintregister(helplist,OS_ADDR);
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tmpref.symbol:=l;
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tmpref.base:=NR_R15;
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helplist.concat(taicpu.op_reg_ref(A_LDR,tmpreg,tmpref));
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if ref.index<>NR_NO then
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internalerror(200401263);
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ref.index:=tmpreg;
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ref.offset:=0;
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helpins:=spilling_create_load(ref,regs[regidx].tempreg);
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helplist.concat(helpins);
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if pos=nil then
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list.insertlistafter(list.first,helplist)
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else
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list.insertlistafter(pos.next,helplist);
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ungetregisterinline(list,helpins,regs[regidx].tempreg);
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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ungetregisterinline(list,helpins,tmpreg);
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forward_allocation(tai(helpins.next),instr);
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helplist.free;
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end
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else
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inherited do_spill_read(list,instr,pos,regidx,spilltemplist,regs);
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end;
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procedure trgcpu.do_spill_written(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);
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var
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helpins: tai;
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ref,tmpref : treference;
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helplist : taasmoutput;
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l : tasmlabel;
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tmpreg : tregister;
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begin
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ref:=spilltemplist[regs[regidx].orgreg];
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if abs(ref.offset)>4095 then
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begin
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helplist:=taasmoutput.create;
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reference_reset(tmpref);
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{ create consts entry }
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objectlibrary.getlabel(l);
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cg.a_label(current_procinfo.aktlocaldata,l);
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tmpref.symboldata:=current_procinfo.aktlocaldata.last;
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current_procinfo.aktlocaldata.concat(tai_const.Create_32bit(ref.offset));
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{ load consts entry }
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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getregisterinline(helplist,pos,defaultsub,tmpreg)
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else
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tmpreg:=cg.getintregister(helplist,OS_ADDR);
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tmpref.symbol:=l;
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tmpref.base:=NR_R15;
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helplist.concat(taicpu.op_reg_ref(A_LDR,tmpreg,tmpref));
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if ref.index<>NR_NO then
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internalerror(200401263);
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ref.index:=tmpreg;
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ref.offset:=0;
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helplist.concat(spilling_create_store(regs[regidx].tempreg,ref));
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ungetregisterinline(helplist,tai(helplist.last),regs[regidx].tempreg);
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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ungetregisterinline(helplist,tai(helplist.last),tmpreg);
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list.insertlistafter(instr,helplist);
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helplist.free;
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end
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else
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inherited do_spill_written(list,instr,pos,regidx,spilltemplist,regs);
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end;
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procedure trgcpu.do_spill_readwritten(list : taasmoutput;instr : taicpu;pos: tai; regidx: word;
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const spilltemplist:Tspill_temp_list;const regs : tspillregsinfo);
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var
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helpins1, helpins2: tai;
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tmpref,ref : treference;
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helplist : taasmoutput;
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l : tasmlabel;
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tmpreg : tregister;
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begin
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ref:=spilltemplist[regs[regidx].orgreg];
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if abs(ref.offset)>4095 then
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begin
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helplist:=taasmoutput.create;
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reference_reset(tmpref);
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{ create consts entry }
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objectlibrary.getlabel(l);
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cg.a_label(current_procinfo.aktlocaldata,l);
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tmpref.symboldata:=current_procinfo.aktlocaldata.last;
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current_procinfo.aktlocaldata.concat(tai_const.Create_32bit(ref.offset));
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{ load consts entry }
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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getregisterinline(helplist,pos,defaultsub,tmpreg)
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else
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tmpreg:=cg.getintregister(helplist,OS_ADDR);
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tmpref.symbol:=l;
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tmpref.base:=NR_R15;
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helplist.concat(taicpu.op_reg_ref(A_LDR,tmpreg,tmpref));
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if ref.index<>NR_NO then
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internalerror(200401263);
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ref.index:=tmpreg;
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ref.offset:=0;
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helpins1:=spilling_create_load(ref,regs[regidx].tempreg);
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helplist.concat(helpins1);
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if pos=nil then
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list.insertlistafter(list.first,helplist)
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else
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list.insertlistafter(pos.next,helplist);
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helpins2:=spilling_create_store(regs[regidx].tempreg,ref);
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list.insertafter(helpins2,instr);
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ungetregisterinline(list,helpins2,regs[regidx].tempreg);
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if getregtype(regs[regidx].tempreg)=R_INTREGISTER then
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ungetregisterinline(list,helpins2,tmpreg);
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forward_allocation(tai(helpins1.next),instr);
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end
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else
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inherited do_spill_readwritten(list,instr,pos,regidx,spilltemplist,regs);
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end;
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procedure trgintcpu.add_cpu_interferences(p : tai);
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begin
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if p.typ=ait_instruction then
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begin
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if (taicpu(p).opcode=A_MUL) then
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add_edge(getsupreg(taicpu(p).oper[0]^.reg),getsupreg(taicpu(p).oper[1]^.reg));
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end;
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end;
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end.
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{
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$Log$
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Revision 1.13 2004-07-03 19:29:14 florian
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* fixed problem with cpu interferences
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Revision 1.12 2004/06/20 08:55:31 florian
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* logs truncated
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Revision 1.11 2004/06/16 20:07:10 florian
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* dwarf branch merged
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Revision 1.10.2.4 2004/06/13 20:38:38 florian
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* fixed floating point register spilling on sparc
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Revision 1.10.2.3 2004/06/13 16:02:39 florian
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* fixed floating point register spilling problems with offsets > 4095
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Revision 1.10.2.2 2004/06/13 10:51:17 florian
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* fixed several register allocator problems (sparc/arm)
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Revision 1.10.2.1 2004/06/12 17:01:01 florian
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* fixed compilation of arm compiler
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}
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