- // Sets of analyses required and preserved by a pass
- VectorType Required, RequiredTransitive, Preserved;
+ /// Sets of analyses required and preserved by a pass
+ // TODO: It's not clear that SmallVector is an appropriate data structure for
+ // this usecase. The sizes were picked to minimize wasted space, but are
+ // otherwise fairly meaningless.
+ SmallVector<AnalysisID, 8> Required;
+ SmallVector<AnalysisID, 2> RequiredTransitive;
+ SmallVector<AnalysisID, 2> Preserved;
+ SmallVector<AnalysisID, 0> Used;