More codegen for blocks.  The type of block literals should be better.
The size calculation is improved.

llvm-svn: 64994
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index ee698d6..d573236 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -260,6 +260,7 @@
   APValue VisitAddrLabelExpr(AddrLabelExpr *E)
       { return APValue(E, 0); }
   APValue VisitCallExpr(CallExpr *E);
+  APValue VisitBlockExpr(BlockExpr *E) { return APValue(E, 0); }
   APValue VisitConditionalOperator(ConditionalOperator *E);
 };
 } // end anonymous namespace