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authorAlan Mishchenko <alanmi@berkeley.edu>2012-02-29 10:51:05 -0800
committerAlan Mishchenko <alanmi@berkeley.edu>2012-02-29 10:51:05 -0800
commit3e5e7a254426bac5b5f9634ff5f087faf275c2c1 (patch)
tree92f2ebe4ae60c3e710c1aed19c2607f8dd90aca3 /src/aig/gia/giaIso.c
parent1bf2b0351abcc6f96854eb50976ac010ca7f00f1 (diff)
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Added skipping &iso when there is only one PO.
Diffstat (limited to 'src/aig/gia/giaIso.c')
-rw-r--r--src/aig/gia/giaIso.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/aig/gia/giaIso.c b/src/aig/gia/giaIso.c
index c5210545..5e47c9b7 100644
--- a/src/aig/gia/giaIso.c
+++ b/src/aig/gia/giaIso.c
@@ -977,6 +977,8 @@ Gia_Man_t * Gia_ManIsoReduce( Gia_Man_t * p, Vec_Ptr_t ** pvPosEquivs, int fVerb
// create preliminary equivalences
vEquivs = Gia_IsoDeriveEquivPos( p, 1, fVeryVerbose );
+ if ( vEquivs == NULL )
+ return NULL;
// printf( "Reduced %d outputs to %d outputs. ", Gia_ManPoNum(p), Vec_PtrSize(vEquivs) );
// Abc_PrintTime( 1, "Time", clock() - clk );