/// InlineFunction - This function inlines the called function into the basic
-/// block of the caller. This returns true if it is not possible to inline this
-/// call. The program is still in a well defined state if this occurs though.
+/// block of the caller. This returns false if it is not possible to inline
+/// this call. The program is still in a well defined state if this occurs
+/// though.
///
/// Note that this only does one level of inlining. For example, if the
/// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now