XMG Rewrite.

msoeken · Nov 6, 2017 · 536ec5e · 536ec5e
1 parent 216331b
commit 536ec5e
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/classical/xmg/xmg_rewrite.cpp b/src/classical/xmg/xmg_rewrite.cpp
@@ -214,9 +214,12 @@ std::vector<xmg_function> xmg_rewrite_top_down_inplace( xmg_graph& dest,
   std::map<xmg_node, xmg_function> old_to_new;
 
   old_to_new[0] = dest.get_constant( false );
-  for ( const auto& pi : index( xmg.inputs() ) )
+  if ( !pi_mapping.empty() )
   {
-    old_to_new[pi.value.first] = pi_mapping[pi.index];
+    for ( const auto& pi : index( xmg.inputs() ) )
+    {
+      old_to_new[pi.value.first] = pi_mapping[pi.index];
+    }
   }
 
   /* prefill */