phase name  id  description
    ----------  --  -----------
        parser   1  parse source into ASTs, perform simple desugaring
         namer   2  resolve names, attach symbols to named trees
packageobjects   3  load package objects
         typer   4  the meat and potatoes: type the trees
superaccessors   5  add super accessors in traits and nested classes
       pickler   6  serialize symbol tables
     refchecks   7  reference/override checking, translate nested objects
      liftcode   8  reify trees
       uncurry   9  uncurry, translate function values to anonymous classes
     tailcalls  10  replace tail calls by jumps
    specialize  11  @specialized-driven class and method specialization
 explicitouter  12  this refs to outer pointers, translate patterns
       erasure  13  erase types, add interfaces for traits
      lazyvals  14  allocate bitmaps, translate lazy vals into lazified defs
    lambdalift  15  move nested functions to top level
  constructors  16  move field definitions into constructors
       flatten  17  eliminate inner classes
         mixin  18  mixin composition
       cleanup  19  platform-specific cleanups, generate reflective calls
         icode  20  generate portable intermediate code
       inliner  21  optimization: do inlining
      closelim  22  optimization: eliminate uncalled closures
           dce  23  optimization: eliminate dead code
           jvm  24  generate JVM bytecode
      terminal  25  The last phase in the compiler chain