mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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4dcd96747e
* foreach gets extra argument for passing local data to the
iterator function
* -CR checks also class typecasts at runtime by changing them
into as
* fixed compiler to cycle with the -CR option
* fixed stabs with elf writer, finally the global variables can
be watched
* removed a lot of routines from cga unit and replaced them by
calls to cgobj
* u32bit-s32bit updates for and,or,xor nodes. When one element is
u32bit then the other is typecasted also to u32bit without giving
a rangecheck warning/error.
* fixed pascal calling method with reversing also the high tree in
the parast, detected by tcalcst3 test
103 lines
3.3 KiB
ObjectPascal
103 lines
3.3 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2002 by the Free Pascal development team
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This routine contains the basic tables and information
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for the generic optimizers and cpu specific optimizations.
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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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{# This unit should define cpu specific information which is required
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for the optimizers.
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}
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unit optbase;
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interface
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uses cpuinfo, cpubase;
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{*****************************************************************************
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Opcode propeties (needed for optimizer)
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*****************************************************************************}
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{$ifndef NOOPT}
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Type
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{What an instruction can change}
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TInsChange = (Ch_None,
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{Read from a register}
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Ch_REAX, Ch_RECX, Ch_REDX, Ch_REBX, Ch_RESP, Ch_REBP, Ch_RESI, Ch_REDI,
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{write from a register}
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Ch_WEAX, Ch_WECX, Ch_WEDX, Ch_WEBX, Ch_WESP, Ch_WEBP, Ch_WESI, Ch_WEDI,
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{read and write from/to a register}
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Ch_RWEAX, Ch_RWECX, Ch_RWEDX, Ch_RWEBX, Ch_RWESP, Ch_RWEBP, Ch_RWESI, Ch_RWEDI,
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{modify the contents of a register with the purpose of using
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this changed content afterwards (add/sub/..., but e.g. not rep
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or movsd)}
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Ch_MEAX, Ch_MECX, Ch_MEDX, Ch_MEBX, Ch_MESP, Ch_MEBP, Ch_MESI, Ch_MEDI,
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Ch_CDirFlag {clear direction flag}, Ch_SDirFlag {set dir flag},
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Ch_RFlags, Ch_WFlags, Ch_RWFlags, Ch_FPU,
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Ch_Rop1, Ch_Wop1, Ch_RWop1,Ch_Mop1,
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Ch_Rop2, Ch_Wop2, Ch_RWop2,Ch_Mop2,
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Ch_Rop3, Ch_WOp3, Ch_RWOp3,Ch_Mop3,
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Ch_WMemEDI,
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Ch_All
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);
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const
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MaxCh = 3; { Max things a instruction can change }
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type
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TInsProp = packed record
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Ch : Array[1..MaxCh] of TInsChange;
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end;
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const
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InsProp : array[tasmop] of TInsProp =
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{$i i386prop.inc}
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{$endif NOOPT}
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implementation
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end.
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{
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$Log$
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Revision 1.2 2002-05-12 16:53:18 peter
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* moved entry and exitcode to ncgutil and cgobj
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* foreach gets extra argument for passing local data to the
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iterator function
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* -CR checks also class typecasts at runtime by changing them
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into as
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* fixed compiler to cycle with the -CR option
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* fixed stabs with elf writer, finally the global variables can
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be watched
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* removed a lot of routines from cga unit and replaced them by
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calls to cgobj
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* u32bit-s32bit updates for and,or,xor nodes. When one element is
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u32bit then the other is typecasted also to u32bit without giving
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a rangecheck warning/error.
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* fixed pascal calling method with reversing also the high tree in
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the parast, detected by tcalcst3 test
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Revision 1.1 2002/04/20 21:50:14 carl
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+ optimization cpu specific information base file
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}
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