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Parametrizing standard-cell mapper to account for the fanout delay.

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This commit is contained in:
Alan Mishchenko
2013-07-30 00:18:57 -07:00
parent 8e54792cd0
commit f10480f9bc
7 changed files with 68 additions and 16 deletions
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src/base/abci/abc.c
+18 -5
View File
@@ -14391,6 +14391,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
double DelayTarget;
double AreaMulti;
double DelayMulti;
float LogFan = 0;
float Slew = 200;
float Gain = 100;
int nGatesMin = 4;
@@ -14400,7 +14401,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
int fSwitching;
int fVerbose;
int c;
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 Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, double DelayMulti, float LogFan, 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);
@@ -14414,7 +14415,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
fSwitching = 0;
fVerbose = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "DABSGMarspvh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "DABFSGMarspvh" ) ) != EOF )
{
switch ( c )
{
@@ -14447,6 +14448,17 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
DelayMulti = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
break;
case 'F':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-F\" should be followed by a floating point number.\n" );
goto usage;
}
LogFan = (float)atof(argv[globalUtilOptind]);
globalUtilOptind++;
if ( LogFan < 0.0 )
goto usage;
break;
case 'S':
if ( globalUtilOptind >= argc )
{
@@ -14528,7 +14540,7 @@ 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, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, LogFan, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_NtkDelete( pNtk );
@@ -14540,7 +14552,7 @@ int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
else
{
// get the new network
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
pNtkRes = Abc_NtkMap( pNtk, DelayTarget, AreaMulti, DelayMulti, LogFan, Slew, Gain, nGatesMin, fRecovery, fSwitching, fVerbose );
if ( pNtkRes == NULL )
{
Abc_Print( -1, "Mapping has failed.\n" );
@@ -14567,11 +14579,12 @@ usage:
sprintf(Buffer, "not used" );
else
sprintf(Buffer, "%.3f", DelayTarget );
Abc_Print( -2, "usage: map [-DABSG float] [-M num] [-arspvh]\n" );
Abc_Print( -2, "usage: map [-DABFSG 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-F float : the logarithmic fanout delay parameter [default = %.2f]\n", LogFan );
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 );
src/base/abci/abcMap.c
+3 -1
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, float Slew, float Gain, int nGatesMin, int fRecovery, int fSwitching, int fVerbose )
Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti, double DelayMulti, float LogFan, float Slew, float Gain, int nGatesMin, int fRecovery, int fSwitching, int fVerbose )
{
static int fUseMulti = 0;
int fShowSwitching = 1;
@@ -125,6 +125,8 @@ Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, double AreaMulti,
return NULL;
clk = Abc_Clock();
Map_ManSetSwitching( pMan, fSwitching );
if ( LogFan != 0 )
Map_ManCreateNodeDelays( pMan, LogFan );
if ( !Map_Mapping( pMan ) )
{
Map_ManFree( pMan );