mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-29 02:33:42 +02:00
99 lines
3.1 KiB
ObjectPascal
99 lines
3.1 KiB
ObjectPascal
{
|
|
$Id$
|
|
Copyright (c) 1998-2000 by Florian Klaempfl
|
|
|
|
This unit does node transformations
|
|
|
|
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 transn;
|
|
|
|
interface
|
|
|
|
implementation
|
|
|
|
{ The following stuff needs to be implemented: }
|
|
|
|
{$ifdef dummy}
|
|
blockn:
|
|
|
|
|
|
count:=0;
|
|
hp:=p^.left;
|
|
while assigned(hp) do
|
|
begin
|
|
if cs_regalloc in aktglobalswitches then
|
|
begin
|
|
{ Codeumstellungen }
|
|
|
|
{ Funktionsresultate an exit anh„ngen }
|
|
{ this is wrong for string or other complex
|
|
result types !!! }
|
|
if ret_in_acc(procinfo^.retdef) and
|
|
assigned(hp^.left) and
|
|
(hp^.left^.right^.treetype=exitn) and
|
|
(hp^.right^.treetype=assignn) and
|
|
(hp^.right^.left^.treetype=funcretn) then
|
|
begin
|
|
if assigned(hp^.left^.right^.left) then
|
|
CGMessage(cg_n_inefficient_code)
|
|
else
|
|
begin
|
|
hp^.left^.right^.left:=getcopy(hp^.right^.right);
|
|
disposetree(hp^.right);
|
|
hp^.right:=nil;
|
|
end;
|
|
end
|
|
{ warning if unreachable code occurs and elimate this }
|
|
else if (hp^.right^.treetype in
|
|
[exitn,breakn,continuen,goton]) and
|
|
assigned(hp^.left) and
|
|
(hp^.left^.treetype<>labeln) then
|
|
begin
|
|
{ use correct line number }
|
|
aktfilepos:=hp^.left^.fileinfo;
|
|
disposetree(hp^.left);
|
|
hp^.left:=nil;
|
|
CGMessage(cg_w_unreachable_code);
|
|
{ old lines }
|
|
aktfilepos:=hp^.right^.fileinfo;
|
|
end;
|
|
end;
|
|
hp:=hp^.left;
|
|
end;
|
|
{$endif dummy}
|
|
|
|
end.
|
|
|
|
{
|
|
$Log$
|
|
Revision 1.1 2000-07-13 06:30:09 michael
|
|
+ Initial import
|
|
|
|
Revision 1.3 2000/01/07 01:14:55 peter
|
|
* updated copyright to 2000
|
|
|
|
Revision 1.2 1999/10/12 21:20:47 florian
|
|
* new codegenerator compiles again
|
|
|
|
Revision 1.1 1999/01/23 23:35:02 florian
|
|
+ first versions
|
|
|
|
}
|
|
|