bool ParameterizeCopyArray::
CanBeBlocked(
DepCompCopyArrayCollect::CopyArrayUnit& unit, int copydim)
{
if (copydim == 0) return false;
int k = 0; /* number of sweeping loop dimensions */
for (int i = 0; i < copydim; ++i) {
bool sweeping = false; /*QY: any sweeping loops*/
for (DepCompCopyArrayCollect::CopyArrayUnit::NodeSet::const_iterator
p = unit.refs.begin(); !p.ReachEnd(); ++p) {
int j = 0; /*number of sweeping loop dimensions per array dimension*/
for (LoopTreeNode* loop = (*p)->GetInfo().stmt->EnclosingLoop();
loop!=0 && loop != unit.root; loop = loop->EnclosingLoop()) {
AstNodePtr ref = (*p)->GetInfo().orig;
if (!ReferenceDimension(ref, loop->GetLoopInfo()->GetVar().GetVarName(),i)) { ++j; sweeping=true; break; }
}
if (j > 1) return false; /*QY: multiple loops sweeping a dimension*/
}
if (sweeping) ++k;
}
if (k == 0) return false; /* QY: no sweeping dimensions*/
return true;
}
