Added command 'addbuffs' to create balanced CI/CO paths.

1 files changed, 66 insertions, 0 deletions

diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index 3ca2aab2..1fdceb32 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -106,6 +106,7 @@ static int Abc_CommandMfs                    ( Abc_Frame_t * pAbc, int argc, cha
 static int Abc_CommandTrace                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
 static int Abc_CommandSpeedup                ( Abc_Frame_t * pAbc, int argc, char ** argv );
 static int Abc_CommandPowerdown              ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int Abc_CommandAddBuffs               ( Abc_Frame_t * pAbc, int argc, char ** argv );
 //static int Abc_CommandMerge                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
 
 static int Abc_CommandRewrite                ( Abc_Frame_t * pAbc, int argc, char ** argv );
@@ -550,6 +551,7 @@ void Abc_Init( Abc_Frame_t * pAbc )
     Cmd_CommandAdd( pAbc, "Synthesis",    "trace",         Abc_CommandTrace,            0 );
     Cmd_CommandAdd( pAbc, "Synthesis",    "speedup",       Abc_CommandSpeedup,          1 );
     Cmd_CommandAdd( pAbc, "Synthesis",    "powerdown",     Abc_CommandPowerdown,        1 );
+    Cmd_CommandAdd( pAbc, "Synthesis",    "addbuffs",      Abc_CommandAddBuffs,         1 );
 //    Cmd_CommandAdd( pAbc, "Synthesis",    "merge",         Abc_CommandMerge,            1 );
 
     Cmd_CommandAdd( pAbc, "Synthesis",    "rewrite",       Abc_CommandRewrite,          1 );
@@ -4526,6 +4528,70 @@ usage:
     return 1;
 } 
 
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Abc_CommandAddBuffs( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    extern Abc_Ntk_t * Abc_NtkAddBuffs( Abc_Ntk_t * pNtk, int fVerbose );
+    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
+    Abc_Ntk_t * pNtkRes;
+    int c, fVerbose;
+
+    fVerbose = 0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+
+    if ( pNtk == NULL )
+    {
+        Abc_Print( -1, "Empty network.\n" );
+        return 1;
+    }
+    if ( !Abc_NtkIsLogic(pNtk) )
+    {
+        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
+        return 1;
+    }
+
+    // modify the current network
+    pNtkRes = Abc_NtkAddBuffs( pNtk, fVerbose );
+    if ( pNtkRes == NULL )
+    {
+        Abc_Print( -1, "The command has failed.\n" );
+        return 1;
+    }
+    // replace the current network
+    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
+    return 0;
+
+usage:
+    Abc_Print( -2, "usage: addbuffs [-vh]\n" );
+    Abc_Print( -2, "\t           adds buffers to create balanced CI/CO paths\n" );
+    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
+    Abc_Print( -2, "\t-h       : print the command usage\n");
+    return 1;
+} 
+
 #if 0
 /**Function*************************************************************