Added support to dataflow solver to (when requested) also record dataflow
values for the block-level expressions.

Modified 'LiveVariables' to provide the option to clients to record
liveness information for block-level expressions (using the above feature).

Modified 'DeadStores' to conform to the new interface of 'LiveVariables'.

Modified 'GRConstants' to compute liveness information for block-level
expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46137 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Analysis/DeadStores.cpp b/Analysis/DeadStores.cpp
index 564478d..926109e 100644
--- a/Analysis/DeadStores.cpp
+++ b/Analysis/DeadStores.cpp
@@ -80,7 +80,7 @@
   LiveVariables L(cfg);
   L.runOnCFG(cfg);
   DeadStoreObs A(Ctx, Diags);
-  L.runOnAllBlocks(cfg,A);
+  L.runOnAllBlocks(cfg,&A);
 }
 
 } // end namespace clang