public static List <Identifier> Find(SsaIdentifierCollection ssaIds, Expression exp)
{
var inst = new UsedIdentifierFinder(ssaIds);
exp.Accept(inst);
return(inst.identifiers);
}
public bool IsUsedInPhi(Identifier id)
{
var src = ssaIds[id].DefStatement;
if (src == null)
{
return(false);
}
var assSrc = src.Instruction as Assignment;
if (assSrc == null)
{
return(false);
}
new DefinedIdentifierFinder();
return(UsedIdentifierFinder.Find(ssaIds, assSrc.Src)
.Select(c => ssaIds[c].DefStatement)
.Where(d => d != null)
.Select(ph => ph.Instruction as PhiAssignment)
.Where(ph => ph != null)
.Any());
//.SelectMany(ph => ssaIds[ph.Ops].DefStatement)
//.Where(opDef => IsOverwriting(opDef) &&
// ( (opDef == src ||
// PathFromTo(src, opDef) && PathFromTo(opDef, src))))
//.Any();
/*
* function shouldPropagateInto(r )
* src := the assignment de ning r
* for each subscripted component c of the RHS of r
* if the de nition for c is a phi -function ph then
* for each operand op of ph
* opdef := the de nition for op
* if opdef is an overwriting statement and either
* (opdef = src) or
* (there exists a CFG path from src to opdef and
* from opdef to the statement containing r ) then
* return false
*/
}
public static List<Identifier> Find(SsaIdentifierCollection ssaIds, Expression exp)
{
var inst = new UsedIdentifierFinder(ssaIds);
exp.Accept(inst);
return inst.identifiers;
}