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authorAlan Mishchenko <alanmi@berkeley.edu>2012-02-29 10:38:18 -0800
committerAlan Mishchenko <alanmi@berkeley.edu>2012-02-29 10:38:18 -0800
commit1bf2b0351abcc6f96854eb50976ac010ca7f00f1 (patch)
treeed5a33958ec950d534e1c7b71bdc8462143aa5fc /src/base
parentd509c0c3a0b934315221f713a18b45fec47cf08c (diff)
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Added skipping &iso when there is only one PO.
Diffstat (limited to 'src/base')
-rw-r--r--src/base/abci/abc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index bd2f5bfe..0eabe4c7 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -27960,6 +27960,11 @@ int Abc_CommandAbc9Iso( Abc_Frame_t * pAbc, int argc, char ** argv )
Abc_Print( -1, "Abc_CommandAbc9Iso(): There is no AIG.\n" );
return 1;
}
+ if ( Gia_ManPoNum(pAbc->pGia) == 1 )
+ {
+ Abc_Print( -1, "Abc_CommandAbc9Iso(): The AIG has only one PO. Isomorphism detection is not performed.\n" );
+ return 1;
+ }
pAig = Gia_ManIsoReduce( pAbc->pGia, &vPosEquivs, fVerbose );
// update the internal storage of PO equivalences
Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );