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Tuning standard-cell mapping flow.

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This commit is contained in:
Alan Mishchenko
2013-07-24 09:54:53 -07:00
parent fadcef9eb9
commit 00d023713b
13 changed files with 165 additions and 82 deletions
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src/base/abci/abc.c
+44 -9
View File
@@ -14391,13 +14391,16 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
double DelayTarget;
double AreaMulti;
double DelayMulti;
float Slew = 200;
float Gain = 100;
int nGatesMin = 4;
int fAreaOnly;
int fRecovery;
int fSweep;
int fSwitching;
int fVerbose;
int c;
extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, double DelayMulti, int fRecovery, int fSwitching, int fVerbose );
extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, double DelayMulti, float Slew, float Gain, int nGatesMin, 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);
@@ -14411,7 +14414,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
fSwitching = 0;
fVerbose = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "DABarspvh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "DABSGMarspvh" ) ) != EOF )
{
switch ( c )
{
@@ -14434,8 +14437,6 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
}
AreaMulti = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
// if ( AreaMulti < 0.0 )
// goto usage;
break;
case 'B':
if ( globalUtilOptind >= argc )
@@ -14445,8 +14446,39 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
}
DelayMulti = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
// if ( DelayMulti < 0.0 )
// goto usage;
break;
case 'S':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-S\" should be followed by a floating point number.\n" );
goto usage;
}
Slew = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
if ( Slew <= 0.0 )
goto usage;
break;
case 'G':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-G\" should be followed by a floating point number.\n" );
goto usage;
}
Gain = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
if ( Gain <= 0.0 )
goto usage;
break;
case 'M':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
goto usage;
}
nGatesMin = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nGatesMin < 0 )
goto usage;
break;
case 'a':
fAreaOnly ^= 1;
@@ -14496,7 +14528,7 @@ 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, AreaMulti, DelayMulti, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_NtkDelete( pNtk );
@@ -14508,7 +14540,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
else
{
// get the new network
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_Print( -1, "Mapping has failed.\n" );
@@ -14535,11 +14567,14 @@ usage:
sprintf(Buffer, "not used" );
else
sprintf(Buffer, "%.3f", DelayTarget );
Abc_Print( -2, "usage: map [-DAB float] [-arspvh]\n" );
Abc_Print( -2, "usage: map [-DABSG float] [-M num] [-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-A float : \"area multiplier\" to bias gate selection [default = %.2f]\n", AreaMulti );
Abc_Print( -2, "\t-B float : \"delay multiplier\" to bias gate selection [default = %.2f]\n", DelayMulti );
Abc_Print( -2, "\t-S float : the slew parameter used to generate the library [default = %.2f]\n", Slew );
Abc_Print( -2, "\t-G float : the gain parameter used to generate the library [default = %.2f]\n", Gain );
Abc_Print( -2, "\t-M num : skip gate classes whose size is less than this [default = %d]\n", nGatesMin );
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" );
src/base/abci/abcMap.c
+7 -8
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, double AreaMulti, double DelayMulti, int fRecovery, int fSwitching, int fVerbose )
Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, double DelayMulti, float Slew, float Gain, int nGatesMin, int fRecovery, int fSwitching, int fVerbose )
{
static int fUseMulti = 0;
int fShowSwitching = 1;
@@ -66,17 +66,18 @@ Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti,
Vec_Int_t * vSwitching = NULL;
float * pSwitching = NULL;
abctime clk, clkTotal = Abc_Clock();
Mio_Library_t * pLib = (Mio_Library_t *)Abc_FrameReadLibGen();
Mio_Library_t * pLib;
assert( Abc_NtkIsStrash(pNtk) );
// check that the library is available
// derive library from SCL
if ( Abc_FrameReadLibScl() )
Mio_SclDeriveGenlib( Abc_FrameReadLibScl(), Slew, Gain, nGatesMin );
// quit if there is no library
pLib = Abc_FrameReadLibGen();
if ( pLib == NULL )
{
printf( "The current library is not available.\n" );
return 0;
}
if ( AreaMulti != 0.0 )
fUseMulti = 1, printf( "The cell areas are multiplied by the factor: <num_fanins> ^ (%.2f).\n", AreaMulti );
if ( DelayMulti != 0.0 )
@@ -91,8 +92,6 @@ Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti,
// derive the supergate library
if ( fUseMulti || Abc_FrameReadLibSuper() == NULL )
{
// printf( "A simple supergate library is derived from gate library \"%s\".\n",
// Mio_LibraryReadName((Mio_Library_t *)Abc_FrameReadLibGen()) );
if ( fVerbose )
printf( "Converting \"%s\" into supergate library \"%s\".\n",
Mio_LibraryReadName(pLib), Extra_FileNameGenericAppend(Mio_LibraryReadName(pLib), ".super") );
src/base/main/main.h
+1
View File
@@ -103,6 +103,7 @@ extern ABC_DLL void * Abc_FrameReadLibGen();
extern ABC_DLL void * Abc_FrameReadLibGen2();
extern ABC_DLL void * Abc_FrameReadLibSuper();
extern ABC_DLL void * Abc_FrameReadLibVer();
extern ABC_DLL void * Abc_FrameReadLibScl();
extern ABC_DLL void * Abc_FrameReadManDd();
extern ABC_DLL void * Abc_FrameReadManDec();
extern ABC_DLL char * Abc_FrameReadFlag( char * pFlag );
src/base/main/mainFrame.c
+1
View File
@@ -56,6 +56,7 @@ void * Abc_FrameReadLibGen() { return s_GlobalFr
void * Abc_FrameReadLibGen2() { return s_GlobalFrame->pLibGen2; }
void * Abc_FrameReadLibSuper() { return s_GlobalFrame->pLibSuper; }
void * Abc_FrameReadLibVer() { return s_GlobalFrame->pLibVer; }
void * Abc_FrameReadLibScl() { return s_GlobalFrame->pLibScl; }
void * Abc_FrameReadManDd() { if ( s_GlobalFrame->dd == NULL ) s_GlobalFrame->dd = Cudd_Init( 0, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); return s_GlobalFrame->dd; }
void * Abc_FrameReadManDec() { if ( s_GlobalFrame->pManDec == NULL ) s_GlobalFrame->pManDec = Dec_ManStart(); return s_GlobalFrame->pManDec; }
char * Abc_FrameReadFlag( char * pFlag ) { return Cmd_FlagReadByName( s_GlobalFrame, pFlag ); }