- /// access to the specified (non-volatile) memory location, returning the
- /// set of instructions that either define or clobber the value.
+ /// access to the QueryInst's specified memory location, returning the set
+ /// of instructions that either define or clobber the value.
+ ///
+ /// Warning: For a volatile query instruction, the dependencies will be
+ /// accurate, and thus usable for reordering, but it is never legal to
+ /// remove the query instruction.