Allow "let AddedCost = n in" to increase pattern complexity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27834 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Target.td b/lib/Target/Target.td
index 4c84674..4d6c80c 100644
--- a/lib/Target/Target.td
+++ b/lib/Target/Target.td
@@ -144,6 +144,9 @@
   // code.
   list<Predicate> Predicates = [];
 
+  // Added cost passed onto matching pattern.
+  int AddedCost  = 0;
+
   // These bits capture information about the high-level semantics of the
   // instruction.
   bit isReturn     = 0;     // Is this instruction a return instruction?