((cite: hotspot/src/share/vm/opto/phase.hpp))
    //------------------------------Phase------------------------------------------
    // Most optimizations are done in Phases.  Creating a phase does any long
    // running analysis required, and caches the analysis in internal data
    // structures.  Later the analysis is queried using transform() calls to
    // guide transforming the program.  When the Phase is deleted, so is any
    // cached analysis info.  This basic Phase class mostly contains timing and
    // memory management code.
    class Phase : public StackObj {