llvm patch

[Jan Hranac]

The attached patch fixes loss of chaining in ExpandUnalignedLoad for 
legal (but unaligned) vectors and floats. The function was returning an 
input chain, not an output one in that case.
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Index: lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/LegalizeDAG.cpp	(revision 243092)
+++ lib/CodeGen/SelectionDAG/LegalizeDAG.cpp	(working copy)
@@ -439,7 +439,7 @@
                              ISD::ANY_EXTEND, dl, VT, Result);
 
       ValResult = Result;
-      ChainResult = Chain;
+      ChainResult = newLoad.getValue(1);
       return;
     }