Adding new switch to &if to relax the delay.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index dab5105d..6deba68d 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -29267,7 +29267,7 @@ int Abc_CommandAbc9If( Abc_Frame_t * pAbc, int argc, char ** argv )
     }
     pPars->pLutLib = (If_LibLut_t *)pAbc->pLibLut;
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFAGDEWSqalepmrsdbgyojikfuzvh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFAGRDEWSqalepmrsdbgyojikfuzvh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -29328,6 +29328,17 @@ int Abc_CommandAbc9If( Abc_Frame_t * pAbc, int argc, char ** argv )
             if ( pPars->nGateSize < 2 )
                 goto usage;
             break;
+        case 'R':
+            if ( globalUtilOptind >= argc )
+            {
+                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
+                return 0;
+            }
+            pPars->nRelaxRatio = (float)atof(argv[globalUtilOptind]);
+            globalUtilOptind++;
+            if ( pPars->nRelaxRatio < 0 ) 
+                goto usage;
+            break;
         case 'D':
             if ( globalUtilOptind >= argc )
             {
@@ -29626,13 +29637,14 @@ usage:
         sprintf(LutSize, "library" );
     else
         sprintf(LutSize, "%d", pPars->nLutSize );
-    Abc_Print( -2, "usage: &if [-KCFAG num] [-DEW float] [-S str] [-qarlepmsdbgyojikfuczvh]\n" );
+    Abc_Print( -2, "usage: &if [-KCFAGR num] [-DEW float] [-S str] [-qarlepmsdbgyojikfuczvh]\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 );
     Abc_Print( -2, "\t-F num   : the number of area flow recovery iterations (num >= 0) [default = %d]\n", pPars->nFlowIters );
     Abc_Print( -2, "\t-A num   : the number of exact area recovery iterations (num >= 0) [default = %d]\n", pPars->nAreaIters );
     Abc_Print( -2, "\t-G num   : the max AND/OR gate size for mapping (0 = unused) [default = %d]\n", pPars->nGateSize );
+    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
     Abc_Print( -2, "\t-D float : sets the delay constraint for the mapping [default = %s]\n", Buffer );
     Abc_Print( -2, "\t-E float : sets epsilon used for tie-breaking [default = %f]\n", pPars->Epsilon );
     Abc_Print( -2, "\t-W float : sets wire delay between adjects LUTs [default = %f]\n", pPars->WireDelay );