InstResults, InstImpResults);
// Promote the xform function to be an explicit node if set.
- TreePatternNodePtr DstPattern = Result.getOnlyTree();
+ const TreePatternNodePtr &DstPattern = Result.getOnlyTree();
std::vector<TreePatternNodePtr> ResultNodeOperands;
for (unsigned ii = 0, ee = DstPattern->getNumChildren(); ii != ee; ++ii) {
TreePatternNodePtr OpNode = DstPattern->getChildShared(ii);
}
ResultNodeOperands.push_back(OpNode);
}
- DstPattern = Result.getOnlyTree();
- if (!DstPattern->isLeaf())
- DstPattern = std::make_shared<TreePatternNode>(DstPattern->getOperator(),
- ResultNodeOperands,
- DstPattern->getNumTypes());
+
+ TreePatternNodePtr DstShared =
+ DstPattern->isLeaf()
+ ? DstPattern
+ : std::make_shared<TreePatternNode>(DstPattern->getOperator(),
+ ResultNodeOperands,
+ DstPattern->getNumTypes());
for (unsigned i = 0, e = Result.getOnlyTree()->getNumTypes(); i != e; ++i)
- DstPattern->setType(i, Result.getOnlyTree()->getExtType(i));
+ DstShared->setType(i, Result.getOnlyTree()->getExtType(i));
- TreePattern Temp(Result.getRecord(), DstPattern, false, *this);
+ TreePattern Temp(Result.getRecord(), DstShared, false, *this);
Temp.InferAllTypes();
// A pattern may end up with an "impossible" type, i.e. a situation
unsigned getNumTrees() const { return Trees.size(); }
const TreePatternNodePtr &getTree(unsigned i) const { return Trees[i]; }
void setTree(unsigned i, TreePatternNodePtr Tree) { Trees[i] = Tree; }
- TreePatternNodePtr getOnlyTree() const {
+ const TreePatternNodePtr &getOnlyTree() const {
assert(Trees.size() == 1 && "Doesn't have exactly one pattern!");
return Trees[0];
}