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| author | Alan Mishchenko <alanmi@berkeley.edu> | 2015-04-24 14:51:34 -0700 |
|---|---|---|
| committer | Alan Mishchenko <alanmi@berkeley.edu> | 2015-04-24 14:51:34 -0700 |
| commit | 9e20b3016ddb16993687cffc050c3cee127f677d (patch) | |
| tree | f92058fe08605320b4a3ed42318821c5fafed29e /src/map/mapper | |
| parent | 3708acbf469432e540fe5075f746028fcdaa27cb (diff) | |
| download | abc-9e20b3016ddb16993687cffc050c3cee127f677d.tar.gz abc-9e20b3016ddb16993687cffc050c3cee127f677d.tar.bz2 abc-9e20b3016ddb16993687cffc050c3cee127f677d.zip | |
Adding switch 'map -f' to not use large gates for high-fanout nodes (disabled by default).
Diffstat (limited to 'src/map/mapper')
| -rw-r--r-- | src/map/mapper/mapper.h | 1 | ||||
| -rw-r--r-- | src/map/mapper/mapperCreate.c | 1 | ||||
| -rw-r--r-- | src/map/mapper/mapperInt.h | 3 | ||||
| -rw-r--r-- | src/map/mapper/mapperMatch.c | 2 |
4 files changed, 5 insertions, 2 deletions
diff --git a/src/map/mapper/mapper.h b/src/map/mapper/mapper.h index 2a52ee08..169223d8 100644 --- a/src/map/mapper/mapper.h +++ b/src/map/mapper/mapper.h @@ -108,6 +108,7 @@ extern void Map_ManSetChoiceNodeNum( Map_Man_t * p, int nChoiceNodes extern void Map_ManSetChoiceNum( Map_Man_t * p, int nChoices ); extern void Map_ManSetVerbose( Map_Man_t * p, int fVerbose ); extern void Map_ManSetSwitching( Map_Man_t * p, int fSwitching ); +extern void Map_ManSetSkipFanout( Map_Man_t * p, int fSkipFanout ); extern Map_Man_t * Map_NodeReadMan( Map_Node_t * p ); extern char * Map_NodeReadData( Map_Node_t * p, int fPhase ); diff --git a/src/map/mapper/mapperCreate.c b/src/map/mapper/mapperCreate.c index 6914724c..e7ad4819 100644 --- a/src/map/mapper/mapperCreate.c +++ b/src/map/mapper/mapperCreate.c @@ -73,6 +73,7 @@ void Map_ManSetChoiceNodeNum( Map_Man_t * p, int nChoiceNodes ) { p-> void Map_ManSetChoiceNum( Map_Man_t * p, int nChoices ) { p->nChoices = nChoices; } void Map_ManSetVerbose( Map_Man_t * p, int fVerbose ) { p->fVerbose = fVerbose; } void Map_ManSetSwitching( Map_Man_t * p, int fSwitching ) { p->fSwitching = fSwitching; } +void Map_ManSetSkipFanout( Map_Man_t * p, int fSkipFanout ) { p->fSkipFanout = fSkipFanout; } /**Function************************************************************* diff --git a/src/map/mapper/mapperInt.h b/src/map/mapper/mapperInt.h index cd6ac81c..fdfece30 100644 --- a/src/map/mapper/mapperInt.h +++ b/src/map/mapper/mapperInt.h @@ -120,7 +120,8 @@ struct Map_ManStruct_t_ int fObeyFanoutLimits;// Should mapper try to obey fanout limits or not float DelayTarget; // the required times set by the user int nTravIds; // the traversal counter - int fSwitching; // Should mapper try to obey fanout limits or not + int fSwitching; // use switching activity + int fSkipFanout; // skip large gates when mapping high-fanout nodes // the supergate library Map_SuperLib_t * pSuperLib; // the current supergate library diff --git a/src/map/mapper/mapperMatch.c b/src/map/mapper/mapperMatch.c index 97b3737a..6e1287b2 100644 --- a/src/map/mapper/mapperMatch.c +++ b/src/map/mapper/mapperMatch.c @@ -288,7 +288,7 @@ int Map_MatchNodePhase( Map_Man_t * p, Map_Node_t * pNode, int fPhase ) for ( pCut = pNode->pCuts->pNext; pCut; pCut = pCut->pNext ) { // limit gate sizes based on fanout count - if ( (pNode->nRefs > 3 && pCut->nLeaves > 2) || (pNode->nRefs > 1 && pCut->nLeaves > 3) ) + if ( p->fSkipFanout && (pNode->nRefs > 3 && pCut->nLeaves > 2) || (pNode->nRefs > 1 && pCut->nLeaves > 3) ) continue; pMatch = pCut->M + fPhase; if ( pMatch->pSupers == NULL ) |