private void InitLoopInfo()
{
// Compute the basic blocks that escape loops
foreach (var impl in Prog.Implementations)
{
var CFG = Program.GraphFromImpl(impl);
CFG.ComputeLoops();
foreach (var Header in CFG.Headers)
{
var allBlocksInThisLoop = new HashSet <Block>();
foreach (var BackEdge in CFG.BackEdgeNodes(Header))
{
foreach (var block in CFG.NaturalLoops(Header, BackEdge))
{
allBlocksInThisLoop.Add(block);
}
}
var escapingBlocks = new HashSet <Block>();
foreach (var b in allBlocksInThisLoop)
{
var gotoCmd = b.TransferCmd as GotoCmd;
if (gotoCmd != null)
{
foreach (var gotoTargetBlock in gotoCmd.labelTargets)
{
if (!(allBlocksInThisLoop.Contains(gotoTargetBlock)))
{
// Blocks reachable from inside the loop that
// are not part of the loop are escaping blocks
escapingBlocks.Add(gotoTargetBlock);
}
}
}
}
// Create LoopInfo
var loopInfo = new LoopInfo(Header, allBlocksInThisLoop, escapingBlocks);
HeaderToLoopInfo.Add(Header, loopInfo);
}
}
}
public ExecutionStateSingleLoopInfo(StackFrame stack, LoopInfo li)
{
Stack = stack;
LInfo = li;
Counter = 0;
}
