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Added features 'map -M <float>' to control the use of large gates.

This commit is contained in:
Alan Mishchenko 2012-08-27 14:29:32 -07:00
parent 9abe8b66c9
commit da6838463f
7 changed files with 76 additions and 23 deletions
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24
src/base/abci/abc.c
View File

@ -13256,25 +13256,27 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
Abc_Ntk_t * pNtk, * pNtkRes;
char Buffer[100];
double DelayTarget;
double AreaMulti;
int fAreaOnly;
int fRecovery;
int fSweep;
int fSwitching;
int fVerbose;
int c;
extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, int fSwitching, int fVerbose );
extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, int fRecovery, int fSwitching, int fVerbose );
extern int Abc_NtkFraigSweep( Abc_Ntk_t * pNtk, int fUseInv, int fExdc, int fVerbose, int fVeryVerbose );
pNtk = Abc_FrameReadNtk(pAbc);
// set defaults
DelayTarget =-1;
AreaMulti = 0;
fAreaOnly = 0;
fRecovery = 1;
fSweep = 1;
fSwitching = 0;
fVerbose = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "Darspvh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "DMarspvh" ) ) != EOF )
{
switch ( c )
{
@ -13289,6 +13291,17 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
if ( DelayTarget <= 0.0 )
goto usage;
break;
case 'M':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-M\" should be followed by a floating point number.\n" );
goto usage;
}
AreaMulti = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
if ( AreaMulti < 0.0 )
goto usage;
break;
case 'a':
fAreaOnly ^= 1;
break;
@ -13337,7 +13350,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
}
Abc_Print( 0, "The network was strashed and balanced before mapping.\n" );
// get the new network
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_NtkDelete( pNtk );
@ -13349,7 +13362,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
else
{
// get the new network
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_Print( -1, "Mapping has failed.\n" );
@ -13369,9 +13382,10 @@ usage:
sprintf( Buffer, "not used" );
else
sprintf( Buffer, "%.3f", DelayTarget );
Abc_Print( -2, "usage: map [-D float] [-arspvh]\n" );
Abc_Print( -2, "usage: map [-DM float] [-arspvh]\n" );
Abc_Print( -2, "\t performs standard cell mapping of the current network\n" );
Abc_Print( -2, "\t-D float : sets the global required times [default = %s]\n", Buffer );
Abc_Print( -2, "\t-M float : \"area multiplier\" to discourage large gates [default = %.2f]\n", AreaMulti );
Abc_Print( -2, "\t-a : toggles area-only mapping [default = %s]\n", fAreaOnly? "yes": "no" );
Abc_Print( -2, "\t-r : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" );
Abc_Print( -2, "\t-s : toggles sweep after mapping [default = %s]\n", fSweep? "yes": "no" );

17
src/base/abci/abcMap.c
View File

@ -57,7 +57,7 @@ static Abc_Obj_t * Abc_NodeFromMapSuperChoice_rec( Abc_Ntk_t * pNtkNew, Map_Sup
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, int fSwitching, int fVerbose )
Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, int fRecovery, int fSwitching, int fVerbose )
{
int fShowSwitching = 1;
Abc_Ntk_t * pNtkNew;
@ -65,22 +65,31 @@ Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, int
Vec_Int_t * vSwitching = NULL;
float * pSwitching = NULL;
clock_t clk, clkTotal = clock();
Mio_Library_t * pLib = Abc_FrameReadLibGen();
assert( Abc_NtkIsStrash(pNtk) );
// check that the library is available
if ( Abc_FrameReadLibGen() == NULL )
if ( pLib == NULL )
{
printf( "The current library is not available.\n" );
return 0;
}
// derive the supergate library
if ( Abc_FrameReadLibSuper() == NULL && Abc_FrameReadLibGen() )
if ( Abc_FrameReadLibSuper() == NULL && pLib )
{
// printf( "A simple supergate library is derived from gate library \"%s\".\n",
// Mio_LibraryReadName((Mio_Library_t *)Abc_FrameReadLibGen()) );
Map_SuperLibDeriveFromGenlib( (Mio_Library_t *)Abc_FrameReadLibGen() );
// penalize large gates by increasing their area
Mio_LibraryShiftArea( pLib, AreaMulti );
// compute supergate library to be used for mapping
Map_SuperLibDeriveFromGenlib( pLib );
// return the library to normal
Mio_LibraryShiftArea( Abc_FrameReadLibGen(), -AreaMulti );
if ( AreaMulti != 0.0 )
printf( "The cell areas are multiplied by the factor: <num_fanins> ^ (%.2f).\n", AreaMulti );
}
// print a warning about choice nodes

19
src/map/amap/amapLiberty.c
View File

@ -345,7 +345,7 @@ char * Amap_LibertyGetStringFormula( Amap_Tree_t * p, Amap_Pair_t Pair )
SeeAlso []
***********************************************************************/
int Amap_LibertyPrintGenlib( Amap_Tree_t * p, char * pFileName )
int Amap_LibertyPrintGenlib( Amap_Tree_t * p, char * pFileName, int fVerbose )
{
FILE * pFile;
Amap_Item_t * pCell, * pArea, * pFunc, * pPin, * pOutput;
@ -390,24 +390,28 @@ int Amap_LibertyPrintGenlib( Amap_Tree_t * p, char * pFileName )
continue;
if ( Amap_LibertyCellIsFlop(p, pCell) )
{
printf( "Amap_LibertyPrintGenlib() skipped sequential cell \"%s\".\n", Amap_LibertyGetString(p, pCell->Head) );
if ( fVerbose )
printf( "Amap_LibertyPrintGenlib() skipped sequential cell \"%s\".\n", Amap_LibertyGetString(p, pCell->Head) );
continue;
}
Counter = Amap_LibertyCellCountOutputs( p, pCell );
if ( Counter == 0 )
{
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" without logic function.\n", Amap_LibertyGetString(p, pCell->Head) );
if ( fVerbose )
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" without logic function.\n", Amap_LibertyGetString(p, pCell->Head) );
continue;
}
if ( Counter > 1 )
{
printf( "Amap_LibertyPrintGenlib() skipped multi-output cell \"%s\".\n", Amap_LibertyGetString(p, pCell->Head) );
if ( fVerbose )
printf( "Amap_LibertyPrintGenlib() skipped multi-output cell \"%s\".\n", Amap_LibertyGetString(p, pCell->Head) );
continue;
}
pArea = Amap_LibertyCellArea( p, pCell );
if ( pArea == NULL )
{
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" with unspecified area.\n", Amap_LibertyGetString(p, pCell->Head) );
if ( fVerbose )
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" with unspecified area.\n", Amap_LibertyGetString(p, pCell->Head) );
continue;
}
pOutput = Amap_LibertyCellOutput( p, pCell );
@ -415,7 +419,8 @@ int Amap_LibertyPrintGenlib( Amap_Tree_t * p, char * pFileName )
pForm = Amap_LibertyGetStringFormula( p, pFunc->Head );
if ( !strcmp(pForm, "0") || !strcmp(pForm, "1") )
{
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" with constant formula \"%s\".\n", Amap_LibertyGetString(p, pCell->Head), pForm );
if ( fVerbose )
printf( "Amap_LibertyPrintGenlib() skipped cell \"%s\" with constant formula \"%s\".\n", Amap_LibertyGetString(p, pCell->Head), pForm );
continue;
}
@ -900,7 +905,7 @@ int Amap_LibertyParse( char * pFileName, char * pFileGenlib, int fVerbose )
if ( fVerbose )
printf( "Parsing finished successfully.\n" );
// Amap_LibertyPrintLiberty( p, "temp_.lib" );
Amap_LibertyPrintGenlib( p, "temp.genlib" );
Amap_LibertyPrintGenlib( p, "temp.genlib", fVerbose );
RetValue = 1;
}
else

5
src/map/amap/amapParse.c
View File

@ -434,7 +434,8 @@ int Amap_LibParseEquations( Amap_Lib_t * p, int fVerbose )
pTruth = Hop_ManConvertAigToTruth( pMan, pObj, pGate->nPins, vTruth, 0 );
if ( Kit_TruthSupportSize(pTruth, pGate->nPins) < (int)pGate->nPins )
{
printf( "Skipping gate \"%s\" because its output \"%s\" does not depend on all input variables.\n", pGate->pName, pGate->pForm );
if ( fVerbose )
printf( "Skipping gate \"%s\" because its output \"%s\" does not depend on all input variables.\n", pGate->pName, pGate->pForm );
continue;
}
pGate->pFunc = (unsigned *)Aig_MmFlexEntryFetch( p->pMemGates, sizeof(unsigned)*Abc_TruthWordNum(pGate->nPins) );
@ -459,7 +460,7 @@ int Amap_LibParseEquations( Amap_Lib_t * p, int fVerbose )
***********************************************************************/
void Amap_LibParseTest( char * pFileName )
{
int fVerbose = 1;
int fVerbose = 0;
Amap_Lib_t * p;
clock_t clk = clock();
p = Amap_LibReadFile( pFileName, fVerbose );

6
src/map/mio/mio.c
View File

@ -161,7 +161,7 @@ int Mio_CommandReadLiberty( Abc_Frame_t * pAbc, int argc, char **argv )
pErr = Abc_FrameReadErr(pAbc);
// set the defaults
fVerbose = 1;
fVerbose = 0;
Extra_UtilGetoptReset();
while ( (c = Extra_UtilGetopt(argc, argv, "vh")) != EOF )
{
@ -295,7 +295,7 @@ int Mio_CommandReadLibrary( Abc_Frame_t * pAbc, int argc, char **argv )
}
// add the fixed number (wire delay) to all delays in the library
if ( WireDelay != 0.0 )
Mio_LibraryShift( pLib, WireDelay );
Mio_LibraryShiftDelay( pLib, WireDelay );
// free the current superlib because it depends on the old Mio library
if ( Abc_FrameReadLibSuper() )
@ -309,7 +309,7 @@ int Mio_CommandReadLibrary( Abc_Frame_t * pAbc, int argc, char **argv )
Abc_FrameSetLibGen( pLib );
// set the new network
pLib = (Mio_Library_t *)Amap_LibReadAndPrepare( FileName, 1, 0 );
pLib = (Mio_Library_t *)Amap_LibReadAndPrepare( FileName, 0, 0 );
if ( pLib == NULL )
{
fprintf( pErr, "Reading GENLIB library has failed.\n" );

3
src/map/mio/mio.h
View File

@ -149,7 +149,8 @@ extern void Mio_DeriveGateDelays( Mio_Gate_t * pGate,
float ** ptPinDelays, int nPins, int nInputs, float tDelayZero,
float * ptDelaysRes, float * ptPinDelayMax );
extern Mio_Gate_t * Mio_GateCreatePseudo( int nInputs );
extern void Mio_LibraryShift( Mio_Library_t * pLib, double Shift );
extern void Mio_LibraryShiftDelay( Mio_Library_t * pLib, double Shift );
extern void Mio_LibraryShiftArea( Mio_Library_t * pLib, double Shift );
ABC_NAMESPACE_HEADER_END

25
src/map/mio/mioUtils.c
View File

@ -16,6 +16,7 @@
***********************************************************************/
#include <math.h>
#include "mioInt.h"
#include "base/main/main.h"
#include "exp.h"
@ -591,7 +592,7 @@ Mio_Gate_t * Mio_GateCreatePseudo( int nInputs )
SeeAlso []
***********************************************************************/
void Mio_LibraryShift( Mio_Library_t * pLib, double Shift )
void Mio_LibraryShiftDelay( Mio_Library_t * pLib, double Shift )
{
Mio_Gate_t * pGate;
Mio_Pin_t * pPin;
@ -607,6 +608,28 @@ void Mio_LibraryShift( Mio_Library_t * pLib, double Shift )
}
}
/**Function*************************************************************
Synopsis [Multiply areas of all gates by values proportional to fanin count.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Mio_LibraryShiftArea( Mio_Library_t * pLib, double Shift )
{
Mio_Gate_t * pGate;
Mio_LibraryForEachGate( pLib, pGate )
{
// printf( "Before %8.3f ", pGate->dArea );
pGate->dArea *= pow( pGate->nInputs, Shift );
// printf( "After %8.3f Inputs = %d. Factor = %8.3f\n", pGate->dArea, pGate->nInputs, pow( pGate->nInputs, Shift ) );
}
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///