private HashSet <VariableDescriptor> GetControlDependencyVariables(string proc, Block b)
{
// This method works under the assumption that assume statements
// relevant to control flow between basic blocks have the "partition" attribute
HashSet <VariableDescriptor> result = new HashSet <VariableDescriptor>();
var gotoCmd = b.TransferCmd as GotoCmd;
if (gotoCmd != null && gotoCmd.labelTargets.Count >= 2)
{
foreach (Block succ in gotoCmd.labelTargets)
{
foreach (Cmd c in succ.Cmds)
{
AssumeCmd a = c as AssumeCmd;
if (a != null && QKeyValue.FindBoolAttribute(a.Attributes, "partition"))
{
var VarCollector = new VariableCollector();
VarCollector.VisitExpr(a.Expr);
result.UnionWith(VarCollector.usedVars.Where(Item => VariableRelevantToAnalysis(Item, proc)).
Select(Item => MakeDescriptor(proc, Item)));
}
else
{
break;
}
}
}
}
return(result);
}
private void AddDependences(AnnotationInstance ci)
{
VariableCollector vc = new VariableCollector();
vc.VisitExpr(ci.Expr);
foreach (var v in vc.usedVars.Where(Item => varDepAnalyser.VariableRelevantToAnalysis(Item, ci.Proc)))
{
VariableDescriptor vd =
varDepAnalyser.MakeDescriptor(ci.Proc, v);
if (!variableDirectlyReferredToByAnnotations.ContainsKey(vd))
{
variableDirectlyReferredToByAnnotations[vd] = new HashSet <string>();
}
variableDirectlyReferredToByAnnotations[vd].Add(ci.AnnotationIdentifier);
foreach (var w in varDepAnalyser.DependsOn(vd))
{
annotationDependsOn[ci.AnnotationIdentifier].Add(w);
}
}
}
private void AddDependences(CandidateInstance ci)
{
VariableCollector vc = new VariableCollector();
vc.VisitExpr(ci.Expr);
foreach (var v in vc.usedVars.Where(Item => varDepAnalyser.VariableRelevantToAnalysis(Item, ci.Proc))) {
VariableDescriptor vd =
varDepAnalyser.MakeDescriptor(ci.Proc, v);
if (!variableDirectlyReferredToByCandidates.ContainsKey(vd)) {
variableDirectlyReferredToByCandidates[vd] = new HashSet<string>();
}
variableDirectlyReferredToByCandidates[vd].Add(ci.Candidate);
foreach (var w in varDepAnalyser.DependsOn(vd)) {
candidateDependsOn[ci.Candidate].Add(w);
}
}
}