[PATCH] Add limitations to loop convert user doc

[Dmitri Gribenko]

================
Comment at: docs/LoopConvertTransform.rst:167
@@ +166,3 @@
+
+As explained previously, calling the container in the body of the loop is
+considered `risky`. If the called member function modifies the container, the
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... calling member functions of the container

Or is it actually only calling non-const member functions?


http://llvm-reviews.chandlerc.com/D552