+<p>Note that, by default, the C back end does not support exception handling. If
+you want/need it for a certain program, you can enable it by passing
+"-enable-correct-eh-support" to the llc program. The resultant code will use
+setjmp/longjmp to implement exception support that is relatively slow, and
+not C++-ABI-conforming on most platforms, but otherwise correct.</p>
+
+<p>Also, there are a number of other limitations of the C backend that
+cause it to produce code that does not fully conform to the C++ ABI on
+most platforms. Some of the C++ programs in LLVM's test suite are known
+to fail when compiled with the C back end because of ABI incompatiblities
+with standard C++ libraries.</p>
+