mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-17 03:05:47 +02:00
858 lines
23 KiB
ObjectPascal
858 lines
23 KiB
ObjectPascal
{
|
|
$Id$
|
|
Copyright (c) 1998-2000 by Florian Klaempfl
|
|
|
|
Type checking and register allocation for nodes that influence
|
|
the flow
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
****************************************************************************
|
|
}
|
|
unit nflw;
|
|
|
|
{$i defines.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
node,aasm,cpubase,symtable;
|
|
|
|
type
|
|
tloopnode = class(tbinarynode)
|
|
t1,t2 : tnode;
|
|
constructor create(tt : tnodetype;l,r,_t1,_t2 : tnode);virtual;
|
|
destructor destroy;override;
|
|
function getcopy : tnode;override;
|
|
end;
|
|
|
|
tlabelednode = class(tnode)
|
|
labelnr : pasmlabel;
|
|
exceptionblock : tnode;
|
|
labsym : plabelsym;
|
|
destructor destroy;override;
|
|
function getcopy : tnode;override;
|
|
end;
|
|
|
|
twhilerepeatnode = class(tloopnode)
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
tifnode = class(tloopnode)
|
|
constructor create(l,r,_t1 : tnode);virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
tfornode = class(tloopnode)
|
|
constructor create(l,r,_t1,_t2 : tnode;back : boolean);
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
texitnode = class(tunarynode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
tgotonode = class(tlabelednode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
tlabelnode = class(tlabelednode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
traisenode = class(tbinarynode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
ttryexceptnode = class(tloopnode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
ttryfinallynode = class(tbinarynode)
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
end;
|
|
|
|
tonnode = class(tbinarynode)
|
|
exceptsymtable : psymtable;
|
|
excepttype : pobjectdef;
|
|
constructor create;virtual;
|
|
function pass_1 : tnode;override;
|
|
destructor destroy;override;
|
|
function getcopy : tnode;override;
|
|
end;
|
|
|
|
{ for compatibilty }
|
|
function genloopnode(t : tnodetype;l,r,n1 : tnode;back : boolean) : tnode;
|
|
|
|
var
|
|
cwhilerepeatnode : class of twhilerepeatnode;
|
|
cifnode : class of tifnode;
|
|
cfornode : class of tfornode;
|
|
cexitnode : class of texitnode;
|
|
cgotonode : class of tgotonode;
|
|
clabelnode : class of tlabelnode;
|
|
craisenode : class of traisenode;
|
|
ctryexceptnode : class of ttryexceptnode;
|
|
ctryfinallynode : class of ttryfinallynode;
|
|
connode : class of tonnode;
|
|
{ the block node of the current exception block to check gotos }
|
|
aktexceptblock : tnode;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype,systems,
|
|
cutils,cobjects,verbose,globals,
|
|
symconst,types,htypechk,pass_1,ncon,nmem
|
|
{$ifdef newcg}
|
|
,tgobj
|
|
,tgcpu
|
|
,cgbase
|
|
{$else newcg}
|
|
,hcodegen
|
|
,temp_gen
|
|
{$ifdef i386}
|
|
,tgeni386
|
|
{$endif}
|
|
{$ifdef m68k}
|
|
,tgen68k
|
|
{$endif m68k}
|
|
{$endif newcg}
|
|
;
|
|
|
|
function genloopnode(t : tnodetype;l,r,n1 : tnode;back : boolean) : tnode;
|
|
|
|
var
|
|
p : tnode;
|
|
|
|
begin
|
|
case t of
|
|
ifn:
|
|
p:=cifnode.create(l,r,n1);
|
|
repeatn:
|
|
p:=cwhilerepeatnode.create(repeatn,l,r,n1,nil);
|
|
whilen:
|
|
p:=cwhilerepeatnode.create(whilen,l,r,n1,nil);
|
|
forn:
|
|
p:=cfornode.create(l,r,n1,nil,back);
|
|
end;
|
|
genloopnode:=p;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TLOOPNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tloopnode.create(tt : tnodetype;l,r,_t1,_t2 : tnode);
|
|
|
|
begin
|
|
inherited create(tt,l,r);
|
|
t1:=_t1;
|
|
t2:=_t2;
|
|
set_file_line(l);
|
|
end;
|
|
|
|
destructor tloopnode.destroy;
|
|
|
|
begin
|
|
t1.free;
|
|
t2.free;
|
|
inherited destroy;
|
|
end;
|
|
|
|
function tloopnode.getcopy : tnode;
|
|
|
|
var
|
|
p : tloopnode;
|
|
|
|
begin
|
|
p:=tloopnode(inherited getcopy);
|
|
p.t1:=t1.getcopy;
|
|
p.t2:=t2.getcopy;
|
|
getcopy:=p;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TTLABELDNODE
|
|
*****************************************************************************}
|
|
|
|
destructor tlabelednode.destroy;
|
|
|
|
begin
|
|
end;
|
|
|
|
function tlabelednode.getcopy : tnode;
|
|
|
|
var
|
|
p : tlabelednode;
|
|
|
|
begin
|
|
p:=tlabelednode(inherited getcopy);
|
|
p.labelnr:=labelnr;
|
|
p.exceptionblock:=exceptionblock;
|
|
p.labsym:=labsym;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TWHILEREPEATNODE
|
|
*****************************************************************************}
|
|
|
|
function twhilerepeatnode.pass_1 : tnode;
|
|
|
|
var
|
|
old_t_times : longint;
|
|
begin
|
|
pass_1:=nil;
|
|
old_t_times:=t_times;
|
|
|
|
{ calc register weight }
|
|
if not(cs_littlesize in aktglobalswitches ) then
|
|
t_times:=t_times*8;
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
|
|
firstpass(left);
|
|
left.set_varstate(true);
|
|
if codegenerror then
|
|
exit;
|
|
if not is_boolean(left.resulttype) then
|
|
begin
|
|
CGMessage(type_e_mismatch);
|
|
exit;
|
|
end;
|
|
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
|
|
{ loop instruction }
|
|
if assigned(right) then
|
|
begin
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(right);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
if registers32<right.registers32 then
|
|
registers32:=right.registers32;
|
|
if registersfpu<right.registersfpu then
|
|
registersfpu:=right.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if registersmmx<right.registersmmx then
|
|
registersmmx:=right.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
t_times:=old_t_times;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TIFNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tifnode.create(l,r,_t1 : tnode);
|
|
|
|
begin
|
|
inherited create(ifn,l,r,_t1,nil);
|
|
end;
|
|
|
|
function tifnode.pass_1 : tnode;
|
|
var
|
|
old_t_times : longint;
|
|
hp : tnode;
|
|
begin
|
|
pass_1:=nil;
|
|
old_t_times:=t_times;
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(left);
|
|
left.set_varstate(true);
|
|
|
|
{ Only check type if no error, we can't leave here because
|
|
the right also needs to be firstpassed }
|
|
if not codegenerror then
|
|
begin
|
|
if not is_boolean(left.resulttype) then
|
|
Message1(type_e_boolean_expr_expected,left.resulttype^.typename);
|
|
end;
|
|
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
|
|
{ determines registers weigths }
|
|
if not(cs_littlesize in aktglobalswitches) then
|
|
t_times:=t_times div 2;
|
|
if t_times=0 then
|
|
t_times:=1;
|
|
|
|
{ if path }
|
|
if assigned(right) then
|
|
begin
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(right);
|
|
|
|
if registers32<right.registers32 then
|
|
registers32:=right.registers32;
|
|
if registersfpu<right.registersfpu then
|
|
registersfpu:=right.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if registersmmx<right.registersmmx then
|
|
registersmmx:=right.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
{ else path }
|
|
if assigned(t1) then
|
|
begin
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(t1);
|
|
|
|
if registers32<t1.registers32 then
|
|
registers32:=t1.registers32;
|
|
if registersfpu<t1.registersfpu then
|
|
registersfpu:=t1.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if registersmmx<t1.registersmmx then
|
|
registersmmx:=t1.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
{ leave if we've got an error in one of the paths }
|
|
|
|
if codegenerror then
|
|
exit;
|
|
|
|
if left.nodetype=ordconstn then
|
|
begin
|
|
{ optimize }
|
|
if tordconstnode(left).value=1 then
|
|
begin
|
|
left.free;
|
|
hp:=right;
|
|
right:=nil;
|
|
t1.free;
|
|
{ we cannot set p to nil !!! }
|
|
if assigned(hp) then
|
|
pass_1:=hp
|
|
else
|
|
pass_1:=cnothingnode.create;
|
|
end
|
|
else
|
|
begin
|
|
left.free;
|
|
hp:=t1;
|
|
t1:=nil;
|
|
right.free;
|
|
{ we cannot set p to nil !!! }
|
|
if assigned(hp) then
|
|
pass_1:=hp
|
|
else
|
|
pass_1:=cnothingnode.create;
|
|
end;
|
|
end;
|
|
|
|
t_times:=old_t_times;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TFORNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tfornode.create(l,r,_t1,_t2 : tnode;back : boolean);
|
|
|
|
begin
|
|
inherited create(forn,l,r,_t1,_t2);
|
|
if back then
|
|
include(flags,nf_backward);
|
|
end;
|
|
|
|
function tfornode.pass_1 : tnode;
|
|
|
|
var
|
|
old_t_times : longint;
|
|
hp : tnode;
|
|
begin
|
|
pass_1:=nil;
|
|
{ Calc register weight }
|
|
old_t_times:=t_times;
|
|
if not(cs_littlesize in aktglobalswitches) then
|
|
t_times:=t_times*8;
|
|
|
|
if left.nodetype<>assignn then
|
|
begin
|
|
CGMessage(cg_e_illegal_expression);
|
|
exit;
|
|
end;
|
|
{ save counter var }
|
|
{ tbinarynode should be tassignnode! }
|
|
t2:=tbinarynode(left).left.getcopy;
|
|
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(left);
|
|
left.set_varstate(false);
|
|
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
if assigned(t1) then
|
|
begin
|
|
firstpass(t1);
|
|
if codegenerror then
|
|
exit;
|
|
end;
|
|
|
|
registers32:=t1.registers32;
|
|
registersfpu:=t1.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
if left.registers32>registers32 then
|
|
registers32:=left.registers32;
|
|
if left.registersfpu>registersfpu then
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if left.registersmmx>registersmmx then
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
|
|
{ process count var }
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(t2);
|
|
t2.set_varstate(true);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
{ Check count var, record fields are also allowed in tp7 }
|
|
hp:=t2;
|
|
while (hp.nodetype=subscriptn) do
|
|
hp:=tsubscriptnode(hp).left;
|
|
{ we need a simple loadn, but the load must be in a global symtable or
|
|
in the same lexlevel }
|
|
if (hp.treetype=funcretn) or
|
|
((hp.treetype=loadn) and
|
|
((hp.symtable^.symtablelevel<=1) or
|
|
(hp.symtable^.symtablelevel=lexlevel))) then
|
|
begin
|
|
if hp.symtableentry^.typ=varsym then
|
|
pvarsym(hp.symtableentry)^.varstate:=vs_used;
|
|
if (not(is_ordinal(t2^.resulttype)) or is_64bitint(t2^.resulttype)) then
|
|
CGMessagePos(hp.fileinfo,type_e_ordinal_expr_expected);
|
|
end
|
|
else
|
|
CGMessagePos(hp.fileinfo,cg_e_illegal_count_var);
|
|
|
|
if t2^.registers32>registers32 then
|
|
registers32:=t2^.registers32;
|
|
if t2^.registersfpu>registersfpu then
|
|
registersfpu:=t2^.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if t2^.registersmmx>registersmmx then
|
|
registersmmx:=t2^.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(right);
|
|
right.set_varstate(true);
|
|
if right.treetype<>ordconstn then
|
|
begin
|
|
right:=gentypeconvnode(right,t2^.resulttype);
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
firstpass(right);
|
|
end;
|
|
|
|
if right.registers32>registers32 then
|
|
registers32:=right.registers32;
|
|
if right.registersfpu>registersfpu then
|
|
registersfpu:=right.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if right.registersmmx>registersmmx then
|
|
registersmmx:=right.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
{ we need at least one register for comparisons PM }
|
|
if registers32=0 then
|
|
inc(registers32);
|
|
t_times:=old_t_times;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TEXITNODE
|
|
*****************************************************************************}
|
|
|
|
constructor texitnode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function texitnode.pass_1 : tnode;
|
|
var
|
|
pt : tnode;
|
|
begin
|
|
pass_1:=nil;
|
|
resulttype:=voiddef;
|
|
if assigned(left) then
|
|
begin
|
|
firstpass(left);
|
|
procinfo^.funcret_state:=vs_assigned;
|
|
if codegenerror then
|
|
exit;
|
|
{ Check the 2 types }
|
|
left:=gentypeconvnode(left,procinfo^.returntype.def);
|
|
firstpass(left);
|
|
if ret_in_param(procinfo^.returntype.def) or procinfo^.no_fast_exit then
|
|
begin
|
|
pt:=genzeronode(funcretn);
|
|
pt^.rettype.setdef(procinfo^.returntype.def);
|
|
pt^.funcretprocinfo:=procinfo;
|
|
left:=gennode(assignn,pt,left);
|
|
firstpass(left);
|
|
end;
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TGOTONODE
|
|
*****************************************************************************}
|
|
|
|
constructor tgotonode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function tgotonode.pass_1 : tnode;
|
|
begin
|
|
pass_1:=nil;
|
|
resulttype:=voiddef;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TLABELNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tlabelnode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function tlabelnode.pass_1 : tnode;
|
|
|
|
begin
|
|
pass_1:=nil;
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
exceptionblock:=aktexceptblock;
|
|
firstpass(left);
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
resulttype:=voiddef;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TRAISENODE
|
|
*****************************************************************************}
|
|
|
|
constructor traisenode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function traisenode.pass_1 : tnode;
|
|
begin
|
|
pass_1:=nil;
|
|
resulttype:=voiddef;
|
|
if assigned(left) then
|
|
begin
|
|
{ first para must be a _class_ }
|
|
firstpass(left);
|
|
if assigned(left.resulttype) and
|
|
((left.resulttype^.deftype<>objectdef) or
|
|
not(pobjectdef(left.resulttype)^.is_class)) then
|
|
CGMessage(type_e_mismatch);
|
|
left.set_varstate(left);
|
|
if codegenerror then
|
|
exit;
|
|
{ insert needed typeconvs for addr,frame }
|
|
if assigned(right) then
|
|
begin
|
|
{ addr }
|
|
firstpass(right);
|
|
right:=gentypeconvnode(right,s32bitdef);
|
|
firstpass(right);
|
|
if codegenerror then
|
|
exit;
|
|
{ frame }
|
|
if assigned(frametree) then
|
|
begin
|
|
firstpass(frametree);
|
|
frametree:=gentypeconvnode(frametree,s32bitdef);
|
|
firstpass(frametree);
|
|
if codegenerror then
|
|
exit;
|
|
end;
|
|
end;
|
|
left_right_max(p);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TTRYEXCEPTNODE
|
|
*****************************************************************************}
|
|
|
|
constructor ttryexceptnode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function ttryexceptnode.pass_1 : tnode;
|
|
|
|
var
|
|
oldexceptblock : tnode;
|
|
|
|
begin
|
|
pass_1:=nil;
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=left;
|
|
firstpass(left);
|
|
aktexceptblock:=oldexceptblock;
|
|
{ on statements }
|
|
if assigned(right) then
|
|
begin
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=right;
|
|
firstpass(right);
|
|
aktexceptblock:=oldexceptblock;
|
|
registers32:=max(registers32,right.registers32);
|
|
registersfpu:=max(registersfpu,right.registersfpu);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(registersmmx,right.registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
{ else block }
|
|
if assigned(t1) then
|
|
begin
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=t1;
|
|
firstpass(t1);
|
|
aktexceptblock:=oldexceptblock;
|
|
registers32:=max(registers32,t1^.registers32);
|
|
registersfpu:=max(registersfpu,t1^.registersfpu);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(registersmmx,t1^.registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TTRYFINALLYNODE
|
|
*****************************************************************************}
|
|
|
|
constructor ttryfinallynode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function ttryfinallynode.pass_1 : tnode;
|
|
|
|
var
|
|
oldexceptblock : tnode;
|
|
|
|
begin
|
|
pass_1:=nil;
|
|
resulttype:=voiddef;
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=left;
|
|
firstpass(left);
|
|
aktexceptblock:=oldexceptblock;
|
|
left.set_varstate(true);
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=right;
|
|
firstpass(right);
|
|
aktexceptblock:=oldexceptblock;
|
|
right.set_varstate(true);
|
|
if codegenerror then
|
|
exit;
|
|
left_right_max(p);
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TONNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tonnode.create;
|
|
|
|
begin
|
|
end;
|
|
|
|
function tonnode.pass_1 : tnode;
|
|
|
|
var
|
|
oldexceptblock : tnode;
|
|
|
|
begin
|
|
pass_1:=nil;
|
|
{ that's really an example procedure for a firstpass :) }
|
|
if (excepttype^.deftype<>objectdef) or
|
|
not(pobjectdef(excepttype)^.is_class) then
|
|
CGMessage(type_e_mismatch);
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
resulttype:=voiddef;
|
|
registers32:=0;
|
|
registersfpu:=0;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=0;
|
|
{$endif SUPPORT_MMX}
|
|
if assigned(left) then
|
|
begin
|
|
firstpass(left);
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
{$ifdef newcg}
|
|
tg.cleartempgen;
|
|
{$else newcg}
|
|
cleartempgen;
|
|
{$endif newcg}
|
|
if assigned(right) then
|
|
begin
|
|
oldexceptblock:=aktexceptblock;
|
|
aktexceptblock:=right;
|
|
firstpass(right);
|
|
aktexceptblock:=oldexceptblock;
|
|
registers32:=max(registers32,right.registers32);
|
|
registersfpu:=max(registersfpu,right.registersfpu);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(registersmmx,right.registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
cwhilerepeatnode:=twhilerepeatnode;
|
|
cifnode:=tifnode;
|
|
cfornode:=tfornode;
|
|
cexitnode:=texitnode;
|
|
cgotonode:=tgotonode;
|
|
clabelnode:=tlabelnode;
|
|
craisenode:=traisenode;
|
|
ctryexceptnode:=ttryexceptnode;
|
|
ctryfinallynode:=ttryfinallynode;
|
|
connode:=tonnode;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.3 2000-09-24 21:15:34 florian
|
|
* some errors fix to get more stuff compilable
|
|
|
|
Revision 1.2 2000/09/24 15:06:19 peter
|
|
* use defines.inc
|
|
|
|
Revision 1.1 2000/09/22 22:46:03 florian
|
|
+ initial revision
|
|
|
|
} |