Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     total           
 time   seconds   seconds    calls   s/call   s/call  name    
 20.64      0.26     0.26   909856     0.00     0.00  newPoolTree
  7.14      0.35     0.09    37900     0.00     0.00  mIDENTIFIER
  7.14      0.44     0.09   421515     0.00     0.00  newPoolToken
  4.76      0.50     0.06   625878     0.00     0.00  antlr3VectorFree
  3.97      0.55     0.05  4220003     0.00     0.00  antlr3AsciiLA
  3.17      0.59     0.04  4145716     0.00     0.00  antlr3VectorAdd
  3.17      0.63     0.04   904146     0.00     0.00  _LA
  3.17      0.67     0.04        4     0.01     0.01  setCharPositionInLine
  2.38      0.70     0.03  2087167     0.00     0.00  freeRS
  2.38      0.73     0.03   893528     0.00     0.00  addChild
  2.38      0.76     0.03   762210     0.00     0.00  antlr3dfapredict
  2.38      0.79     0.03   613828     0.00     0.00  createChildrenList
  2.38      0.82     0.03   261826     0.00     0.00  antlr3AsciiRewind
  1.59      0.84     0.02  4232724     0.00     0.00  antlr3VectorGet
  1.59      0.86     0.02  2140371     0.00     0.00  antlr3RewriteRuleElementStreamNewAE
  1.59      0.88     0.02   627272     0.00     0.00  antlr3VectorNew
  1.59      0.90     0.02   448987     0.00     0.00  setParent
  1.59      0.92     0.02    20287     0.00     0.00  castExpression
  1.59      0.94     0.02    16593     0.00     0.00  relationalExpression
  1.59      0.96     0.02                             getTokens

<rest omitted>