- /// getAnalysisToUpdate<AnalysisType>() - This function is used by subclasses
- /// to get to the analysis information that might be around that needs to be
- /// updated. This is different than getAnalysis in that it can fail (ie the
- /// analysis results haven't been computed), so should only be used if you
- /// provide the capability to update an analysis that exists. This method is
- /// often used by transformation APIs to update analysis results for a pass
- /// automatically as the transform is performed.
+ // lookupPassInfo - Return the pass info object for the pass with the given
+ // argument string, or null if it is not known.
+ static const PassInfo *lookupPassInfo(StringRef Arg);
+
+ /// getAnalysisIfAvailable<AnalysisType>() - Subclasses use this function to
+ /// get analysis information that might be around, for example to update it.
+ /// This is different than getAnalysis in that it can fail (if the analysis
+ /// results haven't been computed), so should only be used if you can handle
+ /// the case when the analysis is not available. This method is often used by
+ /// transformation APIs to update analysis results for a pass automatically as
+ /// the transform is performed.