sketch out a new early cse pass.  No functionality yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122713 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/Scalar.cpp b/lib/Transforms/Scalar/Scalar.cpp
index 0eaf289..27c1118 100644
--- a/lib/Transforms/Scalar/Scalar.cpp
+++ b/lib/Transforms/Scalar/Scalar.cpp
@@ -36,6 +36,7 @@
   initializeDSEPass(Registry);
   initializeGEPSplitterPass(Registry);
   initializeGVNPass(Registry);
+  initializeEarlyCSEPass(Registry);
   initializeIndVarSimplifyPass(Registry);
   initializeJumpThreadingPass(Registry);
   initializeLICMPass(Registry);