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| author | Alan Mishchenko <alanmi@berkeley.edu> | 2011-04-24 10:43:24 -0700 |
|---|---|---|
| committer | Alan Mishchenko <alanmi@berkeley.edu> | 2011-04-24 10:43:24 -0700 |
| commit | affb43e2a376a776c71b20a665b6332dea9022a4 (patch) | |
| tree | a7c564224248322b84c28da3f57594699c2f33f1 /src | |
| parent | 2becb24a325aafa659b0608379d5c22f7fffe16b (diff) | |
| download | abc-affb43e2a376a776c71b20a665b6332dea9022a4.tar.gz abc-affb43e2a376a776c71b20a665b6332dea9022a4.tar.bz2 abc-affb43e2a376a776c71b20a665b6332dea9022a4.zip | |
Added switch to control duplication of logic after mapping.
Diffstat (limited to 'src')
| -rw-r--r-- | src/base/abci/abc.c | 8 | ||||
| -rw-r--r-- | src/base/abci/abcIf.c | 2 | ||||
| -rw-r--r-- | src/map/if/if.h | 1 |
3 files changed, 8 insertions, 3 deletions
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c index 03fd2854..0e1d7b21 100644 --- a/src/base/abci/abc.c +++ b/src/base/abci/abc.c @@ -12682,7 +12682,7 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv ) fLutMux = 0; Extra_UtilGetoptReset(); - while ( ( c = Extra_UtilGetopt( argc, argv, "KCFADEqaflepmrsdbugvh" ) ) != EOF ) + while ( ( c = Extra_UtilGetopt( argc, argv, "KCFADEqaflepmrsdbugovh" ) ) != EOF ) { switch ( c ) { @@ -12793,6 +12793,9 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv ) case 'g': pPars->fDelayOpt ^= 1; break; + case 'o': + pPars->fUseBuffs ^= 1; + break; case 'v': pPars->fVerbose ^= 1; break; @@ -12949,7 +12952,7 @@ usage: sprintf( LutSize, "library" ); else sprintf( LutSize, "%d", pPars->nLutSize ); - Abc_Print( -2, "usage: if [-KCFA num] [-DE float] [-qarlepmsdbugvh]\n" ); + Abc_Print( -2, "usage: if [-KCFA num] [-DE float] [-qarlepmsdbugovh]\n" ); Abc_Print( -2, "\t performs FPGA technology mapping of the network\n" ); Abc_Print( -2, "\t-K num : the number of LUT inputs (2 < num < %d) [default = %s]\n", IF_MAX_LUTSIZE+1, LutSize ); Abc_Print( -2, "\t-C num : the max number of priority cuts (0 < num < 2^12) [default = %d]\n", pPars->nCutsMax ); @@ -12970,6 +12973,7 @@ usage: Abc_Print( -2, "\t-b : toggles the use of one special feature [default = %s]\n", pPars->fUseBat? "yes": "no" ); Abc_Print( -2, "\t-u : toggles the use of MUXes along with LUTs [default = %s]\n", fLutMux? "yes": "no" ); Abc_Print( -2, "\t-g : toggles global delay optimization [default = %s]\n", pPars->fDelayOpt? "yes": "no" ); + Abc_Print( -2, "\t-o : toggles using buffers to decouple combinational outputs [default = %s]\n", pPars->fUseBuffs? "yes": "no" ); Abc_Print( -2, "\t-v : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" ); Abc_Print( -2, "\t-h : prints the command usage\n"); return 1; diff --git a/src/base/abci/abcIf.c b/src/base/abci/abcIf.c index 7f7c68c4..77f7805c 100644 --- a/src/base/abci/abcIf.c +++ b/src/base/abci/abcIf.c @@ -282,7 +282,7 @@ Abc_Ntk_t * Abc_NtkFromIf( If_Man_t * pIfMan, Abc_Ntk_t * pNtk ) if ( pIfMan->pPars->fUseBdds ) Abc_NtkBddReorder( pNtkNew, 0 ); // decouple the PO driver nodes to reduce the number of levels - nDupGates = Abc_NtkLogicMakeSimpleCos( pNtkNew, 1 ); + nDupGates = Abc_NtkLogicMakeSimpleCos( pNtkNew, !pIfMan->pPars->fUseBuffs ); if ( nDupGates && pIfMan->pPars->fVerbose ) printf( "Duplicated %d gates to decouple the CO drivers.\n", nDupGates ); return pNtkNew; diff --git a/src/map/if/if.h b/src/map/if/if.h index 96f6f109..ff2e9541 100644 --- a/src/map/if/if.h +++ b/src/map/if/if.h @@ -95,6 +95,7 @@ struct If_Par_t_ int fSeqMap; // sequential mapping int fBidec; // use bi-decomposition int fUseBat; // use one specialized feature + int fUseBuffs; // use buffers to decouple outputs int fVerbose; // the verbosity flag // internal parameters int fDelayOpt; // special delay optimization |