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Version abc51120

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This commit is contained in:
Alan Mishchenko
2005-11-20 08:01:00 -08:00
parent 85f42d0ebd
commit 69643dfe92
28 changed files with 1035 additions and 238 deletions
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src/base/seq/seqRetIter.c
+36 -17
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@@ -6,7 +6,7 @@
PackageName [Construction and manipulation of sequential AIGs.]
Synopsis []
Synopsis [The iterative L-Value computation for retiming procedures.]
Author [Alan Mishchenko]
@@ -27,10 +27,7 @@
// the internal procedures
static int Seq_RetimeSearch_rec( Abc_Ntk_t * pNtk, int FiMin, int FiMax, int fVerbose );
static int Seq_RetimeForPeriod( Abc_Ntk_t * pNtk, int Fi, int fVerbose );
static int Seq_NodeUpdateLValue( Abc_Obj_t * pObj, int Fi );
// node status after updating its arrival time
enum { SEQ_UPDATE_FAIL, SEQ_UPDATE_NO, SEQ_UPDATE_YES };
static int Seq_RetimeNodeUpdateLValue( Abc_Obj_t * pObj, int Fi );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
@@ -47,11 +44,12 @@ enum { SEQ_UPDATE_FAIL, SEQ_UPDATE_NO, SEQ_UPDATE_YES };
SeeAlso []
***********************************************************************/
void Seq_NtkSeqRetimeDelayLags( Abc_Ntk_t * pNtk, int fVerbose )
void Seq_NtkRetimeDelayLags( Abc_Ntk_t * pNtk, int fVerbose )
{
Abc_Seq_t * p = pNtk->pManFunc;
Abc_Obj_t * pNode;
int i, FiMax, FiBest, RetValue;
char NodeLag;
assert( Abc_NtkIsSeq( pNtk ) );
@@ -69,14 +67,17 @@ void Seq_NtkSeqRetimeDelayLags( Abc_Ntk_t * pNtk, int fVerbose )
// search for the optimal clock period between 0 and nLevelMax
FiBest = Seq_RetimeSearch_rec( pNtk, 0, FiMax, fVerbose );
// recompute the best LValues
// recompute the best l-values
RetValue = Seq_RetimeForPeriod( pNtk, FiBest, fVerbose );
assert( RetValue );
// write the retiming lags
Vec_StrFill( p->vLags, p->nSize, 0 );
Abc_AigForEachAnd( pNtk, pNode, i )
Seq_NodeSetLag( pNode, (char)Seq_NodeComputeLag(Seq_NodeGetLValue(pNode), FiBest) );
{
NodeLag = Seq_NodeComputeLag( Seq_NodeGetLValue(pNode), FiBest );
Seq_NodeSetLag( pNode, NodeLag );
}
// print the result
if ( fVerbose )
@@ -140,7 +141,7 @@ int Seq_RetimeForPeriod( Abc_Ntk_t * pNtk, int Fi, int fVerbose )
// set l-values of all nodes to be minus infinity
Vec_IntFill( p->vLValues, p->nSize, -ABC_INFINITY );
// set l-values for the constant and PIs
// set l-values of constants and PIs
pObj = Abc_NtkObj( pNtk, 0 );
Seq_NodeSetLValue( pObj, 0 );
Abc_NtkForEachPi( pNtk, pObj, i )
@@ -151,13 +152,27 @@ int Seq_RetimeForPeriod( Abc_Ntk_t * pNtk, int Fi, int fVerbose )
for ( c = 0; c < 20; c++ )
{
fChange = 0;
Abc_NtkForEachObj( pNtk, pObj, i )
Abc_AigForEachAnd( pNtk, pObj, i )
{
if ( Abc_ObjIsPi(pObj) )
if ( Seq_NodeCutMan(pObj) )
RetValue = Seq_FpgaNodeUpdateLValue( pObj, Fi );
else
RetValue = Seq_RetimeNodeUpdateLValue( pObj, Fi );
//printf( "Node = %d. Value = %d. \n", pObj->Id, RetValue );
Counter++;
if ( RetValue == SEQ_UPDATE_FAIL )
break;
if ( RetValue == SEQ_UPDATE_NO )
continue;
if ( Abc_ObjFaninNum(pObj) == 0 )
continue;
RetValue = Seq_NodeUpdateLValue( pObj, Fi );
fChange = 1;
}
Abc_NtkForEachPo( pNtk, pObj, i )
{
if ( Seq_NodeCutMan(pObj) )
RetValue = Seq_FpgaNodeUpdateLValue( pObj, Fi );
else
RetValue = Seq_RetimeNodeUpdateLValue( pObj, Fi );
//printf( "Node = %d. Value = %d. \n", pObj->Id, RetValue );
Counter++;
if ( RetValue == SEQ_UPDATE_FAIL )
break;
@@ -176,13 +191,17 @@ int Seq_RetimeForPeriod( Abc_Ntk_t * pNtk, int Fi, int fVerbose )
pReason = "(timeout)";
}
//Abc_NtkForEachObj( pNtk, pObj, i )
//printf( "%d ", Seq_NodeGetLValue(pObj) );
//printf( "\n" );
// report the results
if ( fVerbose )
{
if ( RetValue == SEQ_UPDATE_FAIL )
printf( "Period = %3d. Iterations = %3d. Updates = %10d. Infeasible %s\n", Fi, c, Counter, pReason );
printf( "Period = %3d. Iterations = %3d. Updates = %10d. Infeasible %s\n", Fi, c, Counter, pReason );
else
printf( "Period = %3d. Iterations = %3d. Updates = %10d. Feasible\n", Fi, c, Counter );
printf( "Period = %3d. Iterations = %3d. Updates = %10d. Feasible\n", Fi, c, Counter );
}
return RetValue != SEQ_UPDATE_FAIL;
}
@@ -198,7 +217,7 @@ int Seq_RetimeForPeriod( Abc_Ntk_t * pNtk, int Fi, int fVerbose )
SeeAlso []
***********************************************************************/
int Seq_NodeUpdateLValue( Abc_Obj_t * pObj, int Fi )
int Seq_RetimeNodeUpdateLValue( Abc_Obj_t * pObj, int Fi )
{
int lValueNew, lValueOld, lValue0, lValue1;
assert( !Abc_ObjIsPi(pObj) );