make the new isel generator plop out a CheckComplexPattern function
for evaluating complex patterns.  Some cleanup has to happen before
this can be used though.

llvm-svn: 96419
diff --git a/llvm/utils/TableGen/DAGISelEmitter.cpp b/llvm/utils/TableGen/DAGISelEmitter.cpp
index a62905e..cba2fc6 100644
--- a/llvm/utils/TableGen/DAGISelEmitter.cpp
+++ b/llvm/utils/TableGen/DAGISelEmitter.cpp
@@ -697,7 +697,7 @@
       Code += ", CPTmp" + RootName + "_" + utostr(i);
     if (CP->hasProperty(SDNPHasChain)) {
       ChainName = "Chain" + ChainSuffix;
-      Code += ", CPInChain, Chain" + ChainSuffix;
+      Code += ", CPInChain, " + ChainName;
     }
     emitCheck(Code + ")");
   }