// --------------------------------------------------------------------------
// 1. goto 9
// 9. goto 21
// 1. goto 21
// 9. goto 21
private void TraceGotoChains()
{
for (int index = 1; index < m_middleCodeList.Count; ++index)
{
MiddleCode middleCode = m_middleCodeList[index];
if (middleCode.IsRelationCarryOrGoto())
{
ISet <int> sourceSet = new HashSet <int>();
sourceSet.Add(index);
int firstTarget = (int)middleCode[0];
int finalTarget = TraceGoto(firstTarget, sourceSet);
if (firstTarget != finalTarget)
{
foreach (int source in sourceSet)
{
MiddleCode sourceCode = m_middleCodeList[source];
sourceCode[0] = finalTarget;
}
m_update = true;
}
}
}
}
// --------------------------------------------------------------------------
// 1. goto 2
// 2. ...
private void ClearGotoNextStatements()
{
for (int index = 0; index < (m_middleCodeList.Count - 1); ++index)
{
MiddleCode middleCode = m_middleCodeList[index];
if (middleCode.IsRelationCarryOrGoto())
{
int target = (int)middleCode[0];
if (target == (index + 1))
{
middleCode.Clear();
m_update = true;
}
}
}
}