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Adding switch -C <num> to 'amap' to control max number of cuts at a node.

This commit is contained in:
Alan Mishchenko 2014-05-09 19:01:22 +07:00
parent 140fd9ad9f
commit f39369a415
4 changed files with 19 additions and 5 deletions
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16
src/base/abci/abc.c
View File

@ -14063,7 +14063,7 @@ int Abc_CommandAmap( Abc_Frame_t * pAbc, int argc, char ** argv )
fSweep = 0;
Amap_ManSetDefaultParams( pPars );
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "FAEQmxisvh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "FACEQmxisvh" ) ) != EOF )
{
switch ( c )
{
@ -14089,6 +14089,17 @@ int Abc_CommandAmap( Abc_Frame_t * pAbc, int argc, char ** argv )
if ( pPars->nIterArea < 0 )
goto usage;
break;
case 'C':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-C\" should be followed by a floating point number.\n" );
goto usage;
}
pPars->nCutsMax = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nCutsMax < 0 )
goto usage;
break;
case 'E':
if ( globalUtilOptind >= argc )
{
@ -14190,10 +14201,11 @@ int Abc_CommandAmap( Abc_Frame_t * pAbc, int argc, char ** argv )
return 0;
usage:
Abc_Print( -2, "usage: amap [-FA <num>] [-EQ <float>] [-mxisvh]\n" );
Abc_Print( -2, "usage: amap [-FAC <num>] [-EQ <float>] [-mxisvh]\n" );
Abc_Print( -2, "\t performs standard cell mapping of the current network\n" );
Abc_Print( -2, "\t-F num : the number of iterations of area flow [default = %d]\n", pPars->nIterFlow );
Abc_Print( -2, "\t-A num : the number of iterations of exact area [default = %d]\n", pPars->nIterArea );
Abc_Print( -2, "\t-C num : the maximum number of cuts at a node [default = %d]\n", pPars->nCutsMax );
Abc_Print( -2, "\t-E float : sets epsilon used for tie-breaking [default = %f]\n", pPars->fEpsilon );
Abc_Print( -2, "\t-Q float : area/delay preference ratio [default = %.2f (area-only)] \n", pPars->fADratio );
Abc_Print( -2, "\t-m : toggles using MUX matching [default = %s]\n", pPars->fUseMuxes? "yes": "no" );

1
src/map/amap/amap.h
View File

@ -46,6 +46,7 @@ struct Amap_Par_t_
{
int nIterFlow; // iterations of area flow
int nIterArea; // iteratoins of exact area
int nCutsMax; // the maximum number of cuts at a node
int fUseMuxes; // enables the use of MUXes
int fUseXors; // enables the use of XORs
int fFreeInvs; // assume inverters are free (area = 0)

1
src/map/amap/amapCore.c
View File

@ -48,6 +48,7 @@ void Amap_ManSetDefaultParams( Amap_Par_t * p )
memset( p, 0, sizeof(Amap_Par_t) );
p->nIterFlow = 1; // iterations of area flow
p->nIterArea = 4; // iteratoins of exact area
p->nCutsMax = 500; // the maximum number of cuts at a node
p->fUseMuxes = 0; // enables the use of MUXes
p->fUseXors = 1; // enables the use of XORs
p->fFreeInvs = 0; // assume inverters are free (area = 0)

6
src/map/amap/amapMerge.c
View File

@ -173,7 +173,7 @@ Amap_Cut_t * Amap_ManCutCreate3( Amap_Man_t * p,
***********************************************************************/
void Amap_ManCutSaveStored( Amap_Man_t * p, Amap_Obj_t * pNode )
{
int nMaxCuts = 500;
int nMaxCuts = p->pPars->nCutsMax;
int * pBuffer;
Amap_Cut_t * pNext, * pCut;
int i, nWords, Entry, nCuts, nCuts2;
@ -522,8 +522,8 @@ void Amap_ManMerge( Amap_Man_t * p )
if ( p->pPars->fVerbose )
{
printf( "AIG object is %d bytes. ", (int)sizeof(Amap_Obj_t) );
printf( "Internal AIG = %5.2f MB. Cuts = %5.2f MB.\n",
1.0*Amap_ManObjNum(p)*sizeof(Amap_Obj_t)/(1<<20), 1.0*p->nBytesUsed/(1<<20) );
printf( "Internal AIG = %5.2f MB. Cuts = %5.2f MB. CutsMax = %d.\n",
1.0*Amap_ManObjNum(p)*sizeof(Amap_Obj_t)/(1<<20), 1.0*p->nBytesUsed/(1<<20), p->pPars->nCutsMax );
printf( "Node =%6d. Try =%9d. Try3 =%10d. Used =%7d. R =%6.2f. ",
Amap_ManNodeNum(p), p->nCutsTried, p->nCutsTried3, p->nCutsUsed,
1.0*p->nCutsUsed/Amap_ManNodeNum(p) );