intervalInfo.cpp

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/* Copyright 1994-1996, LongView Technologies L.L.C. $Revision: 1.1 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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# include "incls/_precompiled.incl"
# include "incls/_intervalInfo.cpp.incl"

#ifdef DELTA_COMPILER

IntervalInfo::IntervalInfo(MethodInterval* interval, InlinedScope* scope) {
  _interval = interval; _scope = scope;
}

bool IntervalInfo::isParentOf(IntervalInfo* other) const {
  MethodInterval* mi = other->interval()->parent();
  while (mi && mi != _interval) mi = mi->parent();
  return mi != NULL;
}

bool IntervalInfo::dominates(int bci, IntervalInfo* other, int otherBCI) const {
  // "x dominates y" --> "if y is executed, x was executed earlier"
  // Bytecode bci1 in interval i1 dominates bytecode bci2 in interval i2 if 
  // - i1 == i2 && bci1 <= bci2  (i1 == i2 implies straight-line code)
  // - i1 is a parent of i2 && bci1 < bci2
  //   (e.g., i1 is a method and i2 a loop body or if condition)
  if (this == other && bci <= otherBCI) return true;
  if (isParentOf(other) && bci < otherBCI) return true;
  return false;
}

void IntervalInfo::print() {
  lprintf("((IntervalInfo*)%#x\n", this);
}

#endif

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