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https://gitlab.com/freepascal.org/fpc/source.git
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1298 lines
49 KiB
ObjectPascal
1298 lines
49 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Florian Klaempfl
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Type checking and register allocation for add nodes
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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 nadd;
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interface
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uses
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node;
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type
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taddnode = class(tbinopnode)
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procedure make_bool_equal_size;
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function firstpass : tnode;override;
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end;
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tcaddnode : class of taddnode;
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var
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{ caddnode is used to create nodes of the add type }
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{ the virtual constructor allows to assign }
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{ another class type to caddnode => processor }
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{ specific node types can be created }
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caddnode : tcaddnode;
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function isbinaryoverloaded(var p : ptree) : boolean;
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implementation
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uses
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globtype,systems,tokens,
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cobjects,verbose,globals,
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symconst,symtable,aasm,types,
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cpuinfo,
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{$ifdef newcg}
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cgbase,
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{$else newcg}
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hcodegen,
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{$endif newcg}
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htypechk,pass_1,
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cpubase,tccnv
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;
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function isbinaryoverloaded(var p : ptree) : boolean;
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var
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rd,ld : pdef;
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t : ptree;
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optoken : ttoken;
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begin
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isbinaryoverloaded:=false;
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{ overloaded operator ? }
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{ load easier access variables }
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rd:=p^.right^.resulttype;
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ld:=p^.left^.resulttype;
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if isbinaryoperatoroverloadable(ld,rd,voiddef,p^.treetype) then
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begin
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isbinaryoverloaded:=true;
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{!!!!!!!!! handle paras }
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case p^.treetype of
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{ the nil as symtable signs firstcalln that this is
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an overloaded operator }
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addn:
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optoken:=_PLUS;
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subn:
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optoken:=_MINUS;
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muln:
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optoken:=_STAR;
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starstarn:
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optoken:=_STARSTAR;
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slashn:
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optoken:=_SLASH;
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ltn:
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optoken:=tokens._lt;
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gtn:
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optoken:=tokens._gt;
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lten:
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optoken:=_lte;
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gten:
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optoken:=_gte;
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equaln,unequaln :
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optoken:=_EQUAL;
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symdifn :
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optoken:=_SYMDIF;
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modn :
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optoken:=_OP_MOD;
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orn :
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optoken:=_OP_OR;
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xorn :
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optoken:=_OP_XOR;
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andn :
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optoken:=_OP_AND;
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divn :
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optoken:=_OP_DIV;
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shln :
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optoken:=_OP_SHL;
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shrn :
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optoken:=_OP_SHR;
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else
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exit;
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end;
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t:=gencallnode(overloaded_operators[optoken],nil);
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{ we have to convert p^.left and p^.right into
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callparanodes }
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if t^.symtableprocentry=nil then
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begin
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CGMessage(parser_e_operator_not_overloaded);
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putnode(t);
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end
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else
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begin
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inc(t^.symtableprocentry^.refs);
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t^.left:=gencallparanode(p^.left,nil);
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t^.left:=gencallparanode(p^.right,t^.left);
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if p^.treetype=unequaln then
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t:=gensinglenode(notn,t);
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firstpass(t);
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putnode(p);
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p:=t;
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end;
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end;
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end;
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{*****************************************************************************
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FirstAdd
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*****************************************************************************}
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{$ifdef fpc}
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{$maxfpuregisters 0}
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{$endif fpc}
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procedure taddnode.make_bool_equal_size;
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begin
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if porddef(left^.resulttype)^.typ>porddef(right^.resulttype)^.typ then
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begin
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right:=gentypeconvnode(right,porddef(left^.resulttype));
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right^.convtyp:=tc_bool_2_int;
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right^.explizit:=true;
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firstpass(right);
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end
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else
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if porddef(left^.resulttype)^.typ<porddef(right^.resulttype)^.typ then
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begin
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left:=gentypeconvnode(left,porddef(right^.resulttype));
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left^.convtyp:=tc_bool_2_int;
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left^.explizit:=true;
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firstpass(left);
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end;
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end;
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function taddnode.pass_1 : tnode;
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var
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t,hp : ptree;
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ot,
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lt,rt : ttreetyp;
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rv,lv : TConstExprInt;
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rvd,lvd : bestreal;
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resdef,
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rd,ld : pdef;
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tempdef : pdef;
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concatstrings : boolean;
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{ to evalute const sets }
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resultset : pconstset;
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i : longint;
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b : boolean;
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convdone : boolean;
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s1,s2 : pchar;
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l1,l2 : longint;
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begin
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pass_1:=nil;
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{ first do the two subtrees }
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firstpass(left);
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firstpass(right);
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if codegenerror then
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exit;
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{ convert array constructors to sets, because there is no other operator
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possible for array constructors }
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if is_array_constructor(left^.resulttype) then
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arrayconstructor_to_set(left);
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if is_array_constructor(right^.resulttype) then
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arrayconstructor_to_set(right);
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{ both left and right need to be valid }
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set_varstate(left,true);
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set_varstate(right,true);
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{ load easier access variables }
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lt:=left^.treetype;
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rt:=right^.treetype;
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rd:=right^.resulttype;
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ld:=left^.resulttype;
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convdone:=false;
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if isbinaryoverloaded(p) then
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exit;
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{ compact consts }
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{ convert int consts to real consts, if the }
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{ other operand is a real const }
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if (rt=realconstn) and is_constintnode(left) then
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begin
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t:=genrealconstnode(left^.value,right^.resulttype);
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disposetree(left);
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left:=t;
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lt:=realconstn;
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end;
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if (lt=realconstn) and is_constintnode(right) then
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begin
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t:=genrealconstnode(right^.value,left^.resulttype);
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disposetree(right);
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right:=t;
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rt:=realconstn;
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end;
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{ both are int constants, also allow operations on two equal enums
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in fpc mode (Needed for conversion of C code) }
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if ((lt=ordconstn) and (rt=ordconstn)) and
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((is_constintnode(left) and is_constintnode(right)) or
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(is_constboolnode(left) and is_constboolnode(right) and
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(treetype in [ltn,lten,gtn,gten,equaln,unequaln,andn,xorn,orn]))) then
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begin
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{ return a boolean for boolean operations (and,xor,or) }
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if is_constboolnode(left) then
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resdef:=booldef
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else
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resdef:=s32bitdef;
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lv:=left^.value;
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rv:=right^.value;
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case treetype of
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addn : t:=genordinalconstnode(lv+rv,resdef);
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subn : t:=genordinalconstnode(lv-rv,resdef);
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muln : t:=genordinalconstnode(lv*rv,resdef);
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xorn : t:=genordinalconstnode(lv xor rv,resdef);
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orn : t:=genordinalconstnode(lv or rv,resdef);
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andn : t:=genordinalconstnode(lv and rv,resdef);
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ltn : t:=genordinalconstnode(ord(lv<rv),booldef);
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lten : t:=genordinalconstnode(ord(lv<=rv),booldef);
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gtn : t:=genordinalconstnode(ord(lv>rv),booldef);
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gten : t:=genordinalconstnode(ord(lv>=rv),booldef);
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equaln : t:=genordinalconstnode(ord(lv=rv),booldef);
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unequaln : t:=genordinalconstnode(ord(lv<>rv),booldef);
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slashn : begin
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{ int/int becomes a real }
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if int(rv)=0 then
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begin
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Message(parser_e_invalid_float_operation);
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t:=genrealconstnode(0,bestrealdef^);
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end
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else
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t:=genrealconstnode(int(lv)/int(rv),bestrealdef^);
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firstpass(t);
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end;
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else
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CGMessage(type_e_mismatch);
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end;
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firstpass(t);
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{ the caller disposes the old tree }
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pass_1:=t;
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exit;
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end;
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{ both real constants ? }
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if (lt=realconstn) and (rt=realconstn) then
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begin
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lvd:=left^.value_real;
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rvd:=right^.value_real;
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case treetype of
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addn : t:=genrealconstnode(lvd+rvd,bestrealdef^);
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subn : t:=genrealconstnode(lvd-rvd,bestrealdef^);
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muln : t:=genrealconstnode(lvd*rvd,bestrealdef^);
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starstarn,
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caretn : begin
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if lvd<0 then
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begin
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Message(parser_e_invalid_float_operation);
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t:=genrealconstnode(0,bestrealdef^);
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end
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else if lvd=0 then
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t:=genrealconstnode(1.0,bestrealdef^)
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else
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t:=genrealconstnode(exp(ln(lvd)*rvd),bestrealdef^);
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end;
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slashn :
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begin
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if rvd=0 then
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begin
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Message(parser_e_invalid_float_operation);
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t:=genrealconstnode(0,bestrealdef^);
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end
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else
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t:=genrealconstnode(lvd/rvd,bestrealdef^);
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end;
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ltn : t:=genordinalconstnode(ord(lvd<rvd),booldef);
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lten : t:=genordinalconstnode(ord(lvd<=rvd),booldef);
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gtn : t:=genordinalconstnode(ord(lvd>rvd),booldef);
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gten : t:=genordinalconstnode(ord(lvd>=rvd),booldef);
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equaln : t:=genordinalconstnode(ord(lvd=rvd),booldef);
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unequaln : t:=genordinalconstnode(ord(lvd<>rvd),booldef);
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else
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CGMessage(type_e_mismatch);
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end;
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firstpass(t);
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pass_1:=t;
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exit;
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end;
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{ concating strings ? }
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concatstrings:=false;
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s1:=nil;
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s2:=nil;
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if (lt=ordconstn) and (rt=ordconstn) and
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is_char(ld) and is_char(rd) then
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begin
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s1:=strpnew(char(byte(left^.value)));
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s2:=strpnew(char(byte(right^.value)));
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l1:=1;
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l2:=1;
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concatstrings:=true;
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end
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else
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if (lt=stringconstn) and (rt=ordconstn) and is_char(rd) then
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begin
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s1:=getpcharcopy(left);
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l1:=left^.length;
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s2:=strpnew(char(byte(right^.value)));
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l2:=1;
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concatstrings:=true;
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end
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else
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if (lt=ordconstn) and (rt=stringconstn) and is_char(ld) then
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begin
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s1:=strpnew(char(byte(left^.value)));
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l1:=1;
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s2:=getpcharcopy(right);
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l2:=right^.length;
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concatstrings:=true;
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end
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else if (lt=stringconstn) and (rt=stringconstn) then
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begin
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s1:=getpcharcopy(left);
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l1:=left^.length;
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s2:=getpcharcopy(right);
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l2:=right^.length;
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concatstrings:=true;
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end;
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{ I will need to translate all this to ansistrings !!! }
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if concatstrings then
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begin
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case treetype of
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addn :
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t:=genpcharconstnode(concatansistrings(s1,s2,l1,l2),l1+l2);
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ltn :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)<0),booldef);
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lten :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)<=0),booldef);
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gtn :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)>0),booldef);
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gten :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)>=0),booldef);
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equaln :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)=0),booldef);
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unequaln :
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t:=genordinalconstnode(byte(compareansistrings(s1,s2,l1,l2)<>0),booldef);
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end;
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ansistringdispose(s1,l1);
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ansistringdispose(s2,l2);
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firstpass(t);
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pass_1:=t;
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exit;
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end;
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{ if both are orddefs then check sub types }
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if (ld^.deftype=orddef) and (rd^.deftype=orddef) then
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begin
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{ 2 booleans ? }
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if is_boolean(ld) and is_boolean(rd) then
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begin
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case treetype of
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andn,
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orn:
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begin
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make_bool_equal_size(p);
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calcregisters(p,0,0,0);
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location.loc:=LOC_JUMP;
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end;
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xorn,ltn,lten,gtn,gten:
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begin
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make_bool_equal_size(p);
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if (left^.location.loc in [LOC_JUMP,LOC_FLAGS]) and
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(left^.location.loc in [LOC_JUMP,LOC_FLAGS]) then
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calcregisters(p,2,0,0)
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else
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calcregisters(p,1,0,0);
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end;
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unequaln,
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equaln:
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begin
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make_bool_equal_size(p);
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{ Remove any compares with constants }
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if (left^.treetype=ordconstn) then
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begin
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hp:=right;
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b:=(left^.value<>0);
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ot:=treetype;
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disposetree(left);
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putnode(p);
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p:=hp;
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if (not(b) and (ot=equaln)) or
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(b and (ot=unequaln)) then
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begin
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p:=gensinglenode(notn,p);
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firstpass(p);
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end;
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exit;
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end;
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if (right^.treetype=ordconstn) then
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begin
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hp:=left;
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b:=(right^.value<>0);
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ot:=treetype;
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disposetree(right);
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putnode(p);
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p:=hp;
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if (not(b) and (ot=equaln)) or
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(b and (ot=unequaln)) then
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begin
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p:=gensinglenode(notn,p);
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firstpass(p);
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end;
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exit;
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end;
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if (left^.location.loc in [LOC_JUMP,LOC_FLAGS]) and
|
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(left^.location.loc in [LOC_JUMP,LOC_FLAGS]) then
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calcregisters(p,2,0,0)
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else
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calcregisters(p,1,0,0);
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end;
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else
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CGMessage(type_e_mismatch);
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end;
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|
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{ these one can't be in flags! }
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if treetype in [xorn,unequaln,equaln] then
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begin
|
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if left^.location.loc=LOC_FLAGS then
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begin
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left:=gentypeconvnode(left,porddef(left^.resulttype));
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left^.convtyp:=tc_bool_2_int;
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left^.explizit:=true;
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firstpass(left);
|
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end;
|
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if right^.location.loc=LOC_FLAGS then
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begin
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right:=gentypeconvnode(right,porddef(right^.resulttype));
|
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right^.convtyp:=tc_bool_2_int;
|
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right^.explizit:=true;
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firstpass(right);
|
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end;
|
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{ readjust registers }
|
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calcregisters(p,1,0,0);
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end;
|
|
convdone:=true;
|
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end
|
|
else
|
|
{ Both are chars? only convert to shortstrings for addn }
|
|
if is_char(rd) and is_char(ld) then
|
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begin
|
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if treetype=addn then
|
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begin
|
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left:=gentypeconvnode(left,cshortstringdef);
|
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right:=gentypeconvnode(right,cshortstringdef);
|
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firstpass(left);
|
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firstpass(right);
|
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{ here we call STRCOPY }
|
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procinfo^.flags:=procinfo^.flags or pi_do_call;
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calcregisters(p,0,0,0);
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location.loc:=LOC_MEM;
|
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end
|
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else
|
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calcregisters(p,1,0,0);
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convdone:=true;
|
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end
|
|
{ is there a 64 bit type ? }
|
|
else if ((porddef(rd)^.typ=s64bit) or (porddef(ld)^.typ=s64bit)) and
|
|
{ the / operator is handled later }
|
|
(treetype<>slashn) then
|
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begin
|
|
if (porddef(ld)^.typ<>s64bit) then
|
|
begin
|
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left:=gentypeconvnode(left,cs64bitdef);
|
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firstpass(left);
|
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end;
|
|
if (porddef(rd)^.typ<>s64bit) then
|
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begin
|
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right:=gentypeconvnode(right,cs64bitdef);
|
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firstpass(right);
|
|
end;
|
|
calcregisters(p,2,0,0);
|
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convdone:=true;
|
|
end
|
|
else if ((porddef(rd)^.typ=u64bit) or (porddef(ld)^.typ=u64bit)) and
|
|
{ the / operator is handled later }
|
|
(treetype<>slashn) then
|
|
begin
|
|
if (porddef(ld)^.typ<>u64bit) then
|
|
begin
|
|
left:=gentypeconvnode(left,cu64bitdef);
|
|
firstpass(left);
|
|
end;
|
|
if (porddef(rd)^.typ<>u64bit) then
|
|
begin
|
|
right:=gentypeconvnode(right,cu64bitdef);
|
|
firstpass(right);
|
|
end;
|
|
calcregisters(p,2,0,0);
|
|
convdone:=true;
|
|
end
|
|
else
|
|
{ is there a cardinal? }
|
|
if ((porddef(rd)^.typ=u32bit) or (porddef(ld)^.typ=u32bit)) and
|
|
{ the / operator is handled later }
|
|
(treetype<>slashn) then
|
|
begin
|
|
{ convert constants to u32bit }
|
|
{$ifndef cardinalmulfix}
|
|
if (porddef(ld)^.typ<>u32bit) then
|
|
begin
|
|
{ s32bit will be used for when the other is also s32bit }
|
|
|
|
{ the following line doesn't make any sense: it's the same as }
|
|
{ if ((porddef(rd)^.typ=u32bit) or (porddef(ld)^.typ=u32bit)) and }
|
|
{ (porddef(ld)^.typ<>u32bit) and (porddef(rd)^.typ=s32bit) then }
|
|
{ which can be simplified to }
|
|
{ if ((porddef(rd)^.typ=u32bit) and (porddef(rd)^.typ=s32bit) then }
|
|
{ which can never be true (JM) }
|
|
if (porddef(rd)^.typ=s32bit) and (lt<>ordconstn) then
|
|
left:=gentypeconvnode(left,s32bitdef)
|
|
else
|
|
left:=gentypeconvnode(left,u32bitdef);
|
|
firstpass(left);
|
|
end;
|
|
if (porddef(rd)^.typ<>u32bit) then
|
|
begin
|
|
{ s32bit will be used for when the other is also s32bit }
|
|
if (porddef(ld)^.typ=s32bit) and (rt<>ordconstn) then
|
|
right:=gentypeconvnode(right,s32bitdef)
|
|
else
|
|
right:=gentypeconvnode(right,u32bitdef);
|
|
firstpass(right);
|
|
end;
|
|
{$else cardinalmulfix}
|
|
{ only do a conversion if the nodes have different signs }
|
|
if (porddef(rd)^.typ=u32bit) xor (porddef(ld)^.typ=u32bit) then
|
|
if (porddef(rd)^.typ=u32bit) then
|
|
begin
|
|
{ can we make them both unsigned? }
|
|
if is_constintnode(left) and
|
|
((treetype <> subn) and
|
|
(left^.value > 0)) then
|
|
left:=gentypeconvnode(left,u32bitdef)
|
|
else
|
|
left:=gentypeconvnode(left,s32bitdef);
|
|
firstpass(left);
|
|
end
|
|
else {if (porddef(ld)^.typ=u32bit) then}
|
|
begin
|
|
{ can we make them both unsigned? }
|
|
if is_constintnode(right) and
|
|
(right^.value > 0) then
|
|
right:=gentypeconvnode(right,u32bitdef)
|
|
else
|
|
right:=gentypeconvnode(right,s32bitdef);
|
|
firstpass(right);
|
|
end;
|
|
{$endif cardinalmulfix}
|
|
calcregisters(p,1,0,0);
|
|
{ for unsigned mul we need an extra register }
|
|
{ registers32:=left^.registers32+right^.registers32; }
|
|
if treetype=muln then
|
|
inc(registers32);
|
|
convdone:=true;
|
|
end;
|
|
end
|
|
else
|
|
|
|
{ left side a setdef, must be before string processing,
|
|
else array constructor can be seen as array of char (PFV) }
|
|
if (ld^.deftype=setdef) {or is_array_constructor(ld)} then
|
|
begin
|
|
{ trying to add a set element? }
|
|
if (treetype=addn) and (rd^.deftype<>setdef) then
|
|
begin
|
|
if (rt=setelementn) then
|
|
begin
|
|
if not(is_equal(psetdef(ld)^.elementtype.def,rd)) then
|
|
CGMessage(type_e_set_element_are_not_comp);
|
|
end
|
|
else
|
|
CGMessage(type_e_mismatch)
|
|
end
|
|
else
|
|
begin
|
|
if not(treetype in [addn,subn,symdifn,muln,equaln,unequaln
|
|
{$IfNDef NoSetInclusion}
|
|
,lten,gten
|
|
{$EndIf NoSetInclusion}
|
|
]) then
|
|
CGMessage(type_e_set_operation_unknown);
|
|
{ right def must be a also be set }
|
|
if (rd^.deftype<>setdef) or not(is_equal(rd,ld)) then
|
|
CGMessage(type_e_set_element_are_not_comp);
|
|
end;
|
|
|
|
{ ranges require normsets }
|
|
if (psetdef(ld)^.settype=smallset) and
|
|
(rt=setelementn) and
|
|
assigned(right^.right) then
|
|
begin
|
|
{ generate a temporary normset def }
|
|
tempdef:=new(psetdef,init(psetdef(ld)^.elementtype.def,255));
|
|
left:=gentypeconvnode(left,tempdef);
|
|
firstpass(left);
|
|
dispose(tempdef,done);
|
|
ld:=left^.resulttype;
|
|
end;
|
|
|
|
{ if the destination is not a smallset then insert a typeconv
|
|
which loads a smallset into a normal set }
|
|
if (psetdef(ld)^.settype<>smallset) and
|
|
(psetdef(rd)^.settype=smallset) then
|
|
begin
|
|
if (right^.treetype=setconstn) then
|
|
begin
|
|
t:=gensetconstnode(right^.value_set,psetdef(left^.resulttype));
|
|
t^.left:=right^.left;
|
|
putnode(right);
|
|
right:=t;
|
|
end
|
|
else
|
|
right:=gentypeconvnode(right,psetdef(left^.resulttype));
|
|
firstpass(right);
|
|
end;
|
|
|
|
{ do constant evaluation }
|
|
if (right^.treetype=setconstn) and
|
|
not assigned(right^.left) and
|
|
(left^.treetype=setconstn) and
|
|
not assigned(left^.left) then
|
|
begin
|
|
new(resultset);
|
|
case treetype of
|
|
addn : begin
|
|
for i:=0 to 31 do
|
|
resultset^[i]:=
|
|
right^.value_set^[i] or left^.value_set^[i];
|
|
t:=gensetconstnode(resultset,psetdef(ld));
|
|
end;
|
|
muln : begin
|
|
for i:=0 to 31 do
|
|
resultset^[i]:=
|
|
right^.value_set^[i] and left^.value_set^[i];
|
|
t:=gensetconstnode(resultset,psetdef(ld));
|
|
end;
|
|
subn : begin
|
|
for i:=0 to 31 do
|
|
resultset^[i]:=
|
|
left^.value_set^[i] and not(right^.value_set^[i]);
|
|
t:=gensetconstnode(resultset,psetdef(ld));
|
|
end;
|
|
symdifn : begin
|
|
for i:=0 to 31 do
|
|
resultset^[i]:=
|
|
left^.value_set^[i] xor right^.value_set^[i];
|
|
t:=gensetconstnode(resultset,psetdef(ld));
|
|
end;
|
|
unequaln : begin
|
|
b:=true;
|
|
for i:=0 to 31 do
|
|
if right^.value_set^[i]=left^.value_set^[i] then
|
|
begin
|
|
b:=false;
|
|
break;
|
|
end;
|
|
t:=genordinalconstnode(ord(b),booldef);
|
|
end;
|
|
equaln : begin
|
|
b:=true;
|
|
for i:=0 to 31 do
|
|
if right^.value_set^[i]<>left^.value_set^[i] then
|
|
begin
|
|
b:=false;
|
|
break;
|
|
end;
|
|
t:=genordinalconstnode(ord(b),booldef);
|
|
end;
|
|
{$IfNDef NoSetInclusion}
|
|
lten : Begin
|
|
b := true;
|
|
For i := 0 to 31 Do
|
|
If (right^.value_set^[i] And left^.value_set^[i]) <>
|
|
left^.value_set^[i] Then
|
|
Begin
|
|
b := false;
|
|
Break
|
|
End;
|
|
t := genordinalconstnode(ord(b),booldef);
|
|
End;
|
|
gten : Begin
|
|
b := true;
|
|
For i := 0 to 31 Do
|
|
If (left^.value_set^[i] And right^.value_set^[i]) <>
|
|
right^.value_set^[i] Then
|
|
Begin
|
|
b := false;
|
|
Break
|
|
End;
|
|
t := genordinalconstnode(ord(b),booldef);
|
|
End;
|
|
{$EndIf NoSetInclusion}
|
|
end;
|
|
dispose(resultset);
|
|
disposetree(p);
|
|
p:=t;
|
|
firstpass(p);
|
|
exit;
|
|
end
|
|
else
|
|
if psetdef(ld)^.settype=smallset then
|
|
begin
|
|
{ are we adding set elements ? }
|
|
if right^.treetype=setelementn then
|
|
calcregisters(p,2,0,0)
|
|
else
|
|
calcregisters(p,1,0,0);
|
|
location.loc:=LOC_REGISTER;
|
|
end
|
|
else
|
|
begin
|
|
calcregisters(p,0,0,0);
|
|
{ here we call SET... }
|
|
procinfo^.flags:=procinfo^.flags or pi_do_call;
|
|
location.loc:=LOC_MEM;
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
{ compare pchar to char arrays by addresses
|
|
like BP/Delphi }
|
|
if (is_pchar(ld) and is_chararray(rd)) or
|
|
(is_pchar(rd) and is_chararray(ld)) then
|
|
begin
|
|
if is_chararray(rd) then
|
|
begin
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
end
|
|
else
|
|
begin
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(left);
|
|
end;
|
|
location.loc:=LOC_REGISTER;
|
|
calcregisters(p,1,0,0);
|
|
convdone:=true;
|
|
end
|
|
else
|
|
{ is one of the operands a string?,
|
|
chararrays are also handled as strings (after conversion) }
|
|
if (rd^.deftype=stringdef) or (ld^.deftype=stringdef) or
|
|
((is_chararray(rd) or is_char(rd)) and
|
|
(is_chararray(ld) or is_char(ld))) then
|
|
begin
|
|
if is_widestring(rd) or is_widestring(ld) then
|
|
begin
|
|
if not(is_widestring(rd)) then
|
|
right:=gentypeconvnode(right,cwidestringdef);
|
|
if not(is_widestring(ld)) then
|
|
left:=gentypeconvnode(left,cwidestringdef);
|
|
resulttype:=cwidestringdef;
|
|
{ this is only for add, the comparisaion is handled later }
|
|
location.loc:=LOC_REGISTER;
|
|
end
|
|
else if is_ansistring(rd) or is_ansistring(ld) then
|
|
begin
|
|
if not(is_ansistring(rd)) then
|
|
right:=gentypeconvnode(right,cansistringdef);
|
|
if not(is_ansistring(ld)) then
|
|
left:=gentypeconvnode(left,cansistringdef);
|
|
{ we use ansistrings so no fast exit here }
|
|
procinfo^.no_fast_exit:=true;
|
|
resulttype:=cansistringdef;
|
|
{ this is only for add, the comparisaion is handled later }
|
|
location.loc:=LOC_REGISTER;
|
|
end
|
|
else if is_longstring(rd) or is_longstring(ld) then
|
|
begin
|
|
if not(is_longstring(rd)) then
|
|
right:=gentypeconvnode(right,clongstringdef);
|
|
if not(is_longstring(ld)) then
|
|
left:=gentypeconvnode(left,clongstringdef);
|
|
resulttype:=clongstringdef;
|
|
{ this is only for add, the comparisaion is handled later }
|
|
location.loc:=LOC_MEM;
|
|
end
|
|
else
|
|
begin
|
|
if not(is_shortstring(rd))
|
|
{$ifdef newoptimizations2}
|
|
{$ifdef i386}
|
|
{ shortstring + char handled seperately (JM) }
|
|
and (not(cs_optimize in aktglobalswitches) or
|
|
(treetype <> addn) or not(is_char(rd)))
|
|
{$endif i386}
|
|
{$endif newoptimizations2}
|
|
then
|
|
right:=gentypeconvnode(right,cshortstringdef);
|
|
if not(is_shortstring(ld)) then
|
|
left:=gentypeconvnode(left,cshortstringdef);
|
|
resulttype:=cshortstringdef;
|
|
{ this is only for add, the comparisaion is handled later }
|
|
location.loc:=LOC_MEM;
|
|
end;
|
|
{ only if there is a type cast we need to do again }
|
|
{ the first pass }
|
|
if left^.treetype=typeconvn then
|
|
firstpass(left);
|
|
if right^.treetype=typeconvn then
|
|
firstpass(right);
|
|
{ here we call STRCONCAT or STRCMP or STRCOPY }
|
|
procinfo^.flags:=procinfo^.flags or pi_do_call;
|
|
if location.loc=LOC_MEM then
|
|
calcregisters(p,0,0,0)
|
|
else
|
|
calcregisters(p,1,0,0);
|
|
{$ifdef i386}
|
|
{ not always necessary, only if it is not a constant char and }
|
|
{ not a regvar, but don't know how to check this here (JM) }
|
|
if is_char(rd) then
|
|
inc(registers32);
|
|
{$endif i386}
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
{ is one a real float ? }
|
|
if (rd^.deftype=floatdef) or (ld^.deftype=floatdef) then
|
|
begin
|
|
{ if one is a fixed, then convert to f32bit }
|
|
if ((rd^.deftype=floatdef) and (pfloatdef(rd)^.typ=f32bit)) or
|
|
((ld^.deftype=floatdef) and (pfloatdef(ld)^.typ=f32bit)) then
|
|
begin
|
|
if not is_integer(rd) or (treetype<>muln) then
|
|
right:=gentypeconvnode(right,s32fixeddef);
|
|
if not is_integer(ld) or (treetype<>muln) then
|
|
left:=gentypeconvnode(left,s32fixeddef);
|
|
firstpass(left);
|
|
firstpass(right);
|
|
calcregisters(p,1,0,0);
|
|
location.loc:=LOC_REGISTER;
|
|
end
|
|
else
|
|
{ convert both to bestreal }
|
|
begin
|
|
right:=gentypeconvnode(right,bestrealdef^);
|
|
left:=gentypeconvnode(left,bestrealdef^);
|
|
firstpass(left);
|
|
firstpass(right);
|
|
calcregisters(p,0,1,0);
|
|
location.loc:=LOC_FPU;
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
{ pointer comperation and subtraction }
|
|
if (rd^.deftype=pointerdef) and (ld^.deftype=pointerdef) then
|
|
begin
|
|
location.loc:=LOC_REGISTER;
|
|
{ right:=gentypeconvnode(right,ld); }
|
|
{ firstpass(right); }
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln :
|
|
begin
|
|
if is_equal(right^.resulttype,voidpointerdef) then
|
|
begin
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
end
|
|
else if is_equal(left^.resulttype,voidpointerdef) then
|
|
begin
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(left);
|
|
end
|
|
else if not(is_equal(ld,rd)) then
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
ltn,lten,gtn,gten:
|
|
begin
|
|
if is_equal(right^.resulttype,voidpointerdef) then
|
|
begin
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
end
|
|
else if is_equal(left^.resulttype,voidpointerdef) then
|
|
begin
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(left);
|
|
end
|
|
else if not(is_equal(ld,rd)) then
|
|
CGMessage(type_e_mismatch);
|
|
if not(cs_extsyntax in aktmoduleswitches) then
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
subn:
|
|
begin
|
|
if not(is_equal(ld,rd)) then
|
|
CGMessage(type_e_mismatch);
|
|
if not(cs_extsyntax in aktmoduleswitches) then
|
|
CGMessage(type_e_mismatch);
|
|
resulttype:=s32bitdef;
|
|
exit;
|
|
end;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (rd^.deftype=objectdef) and (ld^.deftype=objectdef) and
|
|
pobjectdef(rd)^.is_class and pobjectdef(ld)^.is_class then
|
|
begin
|
|
location.loc:=LOC_REGISTER;
|
|
if pobjectdef(rd)^.is_related(pobjectdef(ld)) then
|
|
right:=gentypeconvnode(right,ld)
|
|
else
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(right);
|
|
firstpass(left);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (rd^.deftype=classrefdef) and (ld^.deftype=classrefdef) then
|
|
begin
|
|
location.loc:=LOC_REGISTER;
|
|
if pobjectdef(pclassrefdef(rd)^.pointertype.def)^.is_related(pobjectdef(
|
|
pclassrefdef(ld)^.pointertype.def)) then
|
|
right:=gentypeconvnode(right,ld)
|
|
else
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(right);
|
|
firstpass(left);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
{ allows comperasion with nil pointer }
|
|
if (rd^.deftype=objectdef) and
|
|
pobjectdef(rd)^.is_class then
|
|
begin
|
|
location.loc:=LOC_REGISTER;
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(left);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (ld^.deftype=objectdef) and
|
|
pobjectdef(ld)^.is_class then
|
|
begin
|
|
location.loc:=LOC_REGISTER;
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (rd^.deftype=classrefdef) then
|
|
begin
|
|
left:=gentypeconvnode(left,rd);
|
|
firstpass(left);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (ld^.deftype=classrefdef) then
|
|
begin
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
{ support procvar=nil,procvar<>nil }
|
|
if ((ld^.deftype=procvardef) and (rt=niln)) or
|
|
((rd^.deftype=procvardef) and (lt=niln)) then
|
|
begin
|
|
calcregisters(p,1,0,0);
|
|
location.loc:=LOC_REGISTER;
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
{$ifdef SUPPORT_MMX}
|
|
if (cs_mmx in aktlocalswitches) and is_mmx_able_array(ld) and
|
|
is_mmx_able_array(rd) and is_equal(ld,rd) then
|
|
begin
|
|
firstpass(right);
|
|
firstpass(left);
|
|
case treetype of
|
|
addn,subn,xorn,orn,andn:
|
|
;
|
|
{ mul is a little bit restricted }
|
|
muln:
|
|
if not(mmx_type(left^.resulttype) in
|
|
[mmxu16bit,mmxs16bit,mmxfixed16]) then
|
|
CGMessage(type_e_mismatch);
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
location.loc:=LOC_MMXREGISTER;
|
|
calcregisters(p,0,0,1);
|
|
convdone:=true;
|
|
end
|
|
else
|
|
{$endif SUPPORT_MMX}
|
|
|
|
{ this is a little bit dangerous, also the left type }
|
|
{ should be checked! This broke the mmx support }
|
|
if (rd^.deftype=pointerdef) or
|
|
is_zero_based_array(rd) then
|
|
begin
|
|
if is_zero_based_array(rd) then
|
|
begin
|
|
resulttype:=new(ppointerdef,init(parraydef(rd)^.elementtype));
|
|
right:=gentypeconvnode(right,resulttype);
|
|
firstpass(right);
|
|
end;
|
|
location.loc:=LOC_REGISTER;
|
|
left:=gentypeconvnode(left,s32bitdef);
|
|
firstpass(left);
|
|
calcregisters(p,1,0,0);
|
|
if treetype=addn then
|
|
begin
|
|
if not(cs_extsyntax in aktmoduleswitches) or
|
|
(not(is_pchar(ld)) and not(m_add_pointer in aktmodeswitches)) then
|
|
CGMessage(type_e_mismatch);
|
|
{ Dirty hack, to support multiple firstpasses (PFV) }
|
|
if (resulttype=nil) and
|
|
(rd^.deftype=pointerdef) and
|
|
(ppointerdef(rd)^.pointertype.def^.size>1) then
|
|
begin
|
|
left:=gennode(muln,left,genordinalconstnode(ppointerdef(rd)^.pointertype.def^.size,s32bitdef));
|
|
firstpass(left);
|
|
end;
|
|
end
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (ld^.deftype=pointerdef) or
|
|
is_zero_based_array(ld) then
|
|
begin
|
|
if is_zero_based_array(ld) then
|
|
begin
|
|
resulttype:=new(ppointerdef,init(parraydef(ld)^.elementtype));
|
|
left:=gentypeconvnode(left,resulttype);
|
|
firstpass(left);
|
|
end;
|
|
location.loc:=LOC_REGISTER;
|
|
right:=gentypeconvnode(right,s32bitdef);
|
|
firstpass(right);
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
addn,subn : begin
|
|
if not(cs_extsyntax in aktmoduleswitches) or
|
|
(not(is_pchar(ld)) and not(m_add_pointer in aktmodeswitches)) then
|
|
CGMessage(type_e_mismatch);
|
|
{ Dirty hack, to support multiple firstpasses (PFV) }
|
|
if (resulttype=nil) and
|
|
(ld^.deftype=pointerdef) and
|
|
(ppointerdef(ld)^.pointertype.def^.size>1) then
|
|
begin
|
|
right:=gennode(muln,right,
|
|
genordinalconstnode(ppointerdef(ld)^.pointertype.def^.size,s32bitdef));
|
|
firstpass(right);
|
|
end;
|
|
end;
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (rd^.deftype=procvardef) and (ld^.deftype=procvardef) and is_equal(rd,ld) then
|
|
begin
|
|
calcregisters(p,1,0,0);
|
|
location.loc:=LOC_REGISTER;
|
|
case treetype of
|
|
equaln,unequaln : ;
|
|
else
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end
|
|
else
|
|
|
|
if (ld^.deftype=enumdef) and (rd^.deftype=enumdef) then
|
|
begin
|
|
if not(is_equal(ld,rd)) then
|
|
begin
|
|
right:=gentypeconvnode(right,ld);
|
|
firstpass(right);
|
|
end;
|
|
calcregisters(p,1,0,0);
|
|
case treetype of
|
|
equaln,unequaln,
|
|
ltn,lten,gtn,gten : ;
|
|
else CGMessage(type_e_mismatch);
|
|
end;
|
|
convdone:=true;
|
|
end;
|
|
|
|
{ the general solution is to convert to 32 bit int }
|
|
if not convdone then
|
|
begin
|
|
{ but an int/int gives real/real! }
|
|
if treetype=slashn then
|
|
begin
|
|
CGMessage(type_h_use_div_for_int);
|
|
right:=gentypeconvnode(right,bestrealdef^);
|
|
left:=gentypeconvnode(left,bestrealdef^);
|
|
firstpass(left);
|
|
firstpass(right);
|
|
{ maybe we need an integer register to save }
|
|
{ a reference }
|
|
if ((left^.location.loc<>LOC_FPU) or
|
|
(right^.location.loc<>LOC_FPU)) and
|
|
(left^.registers32=right^.registers32) then
|
|
calcregisters(p,1,1,0)
|
|
else
|
|
calcregisters(p,0,1,0);
|
|
location.loc:=LOC_FPU;
|
|
end
|
|
else
|
|
begin
|
|
right:=gentypeconvnode(right,s32bitdef);
|
|
left:=gentypeconvnode(left,s32bitdef);
|
|
firstpass(left);
|
|
firstpass(right);
|
|
calcregisters(p,1,0,0);
|
|
location.loc:=LOC_REGISTER;
|
|
end;
|
|
end;
|
|
|
|
if codegenerror then
|
|
exit;
|
|
|
|
{ determines result type for comparions }
|
|
{ here the is a problem with multiple passes }
|
|
{ example length(s)+1 gets internal 'longint' type first }
|
|
{ if it is a arg it is converted to 'LONGINT' }
|
|
{ but a second first pass will reset this to 'longint' }
|
|
case treetype of
|
|
ltn,lten,gtn,gten,equaln,unequaln:
|
|
begin
|
|
if (not assigned(resulttype)) or
|
|
(resulttype^.deftype=stringdef) then
|
|
resulttype:=booldef;
|
|
if is_64bitint(left^.resulttype) then
|
|
location.loc:=LOC_JUMP
|
|
else
|
|
location.loc:=LOC_FLAGS;
|
|
end;
|
|
xorn:
|
|
begin
|
|
if not assigned(resulttype) then
|
|
resulttype:=left^.resulttype;
|
|
location.loc:=LOC_REGISTER;
|
|
end;
|
|
addn:
|
|
begin
|
|
if not assigned(resulttype) then
|
|
begin
|
|
{ for strings, return is always a 255 char string }
|
|
if is_shortstring(left^.resulttype) then
|
|
resulttype:=cshortstringdef
|
|
else
|
|
resulttype:=left^.resulttype;
|
|
end;
|
|
end;
|
|
{$ifdef cardinalmulfix}
|
|
muln:
|
|
{ if we multiply an unsigned with a signed number, the result is signed }
|
|
{ in the other cases, the result remains signed or unsigned depending on }
|
|
{ the multiplication factors (JM) }
|
|
if (left^.resulttype^.deftype = orddef) and
|
|
(right^.resulttype^.deftype = orddef) and
|
|
is_signed(right^.resulttype) then
|
|
resulttype := right^.resulttype
|
|
else resulttype := left^.resulttype;
|
|
(*
|
|
subn:
|
|
{ if we substract a u32bit from a positive constant, the result becomes }
|
|
{ s32bit as well (JM) }
|
|
begin
|
|
if (right^.resulttype^.deftype = orddef) and
|
|
(left^.resulttype^.deftype = orddef) and
|
|
(porddef(right^.resulttype)^.typ = u32bit) and
|
|
is_constintnode(left) and
|
|
{ (porddef(left^.resulttype)^.typ <> u32bit) and}
|
|
(left^.value > 0) then
|
|
begin
|
|
left := gentypeconvnode(left,u32bitdef);
|
|
firstpass(left);
|
|
end;
|
|
resulttype:=left^.resulttype;
|
|
end;
|
|
*)
|
|
{$endif cardinalmulfix}
|
|
else
|
|
resulttype:=left^.resulttype;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
caddnode:=taddnode;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.1 2000-08-26 12:24:20 florian
|
|
* initial release
|
|
|
|
} |