return nullptr;
}
+/// \brief Map a distinct MDNode.
+///
+/// Distinct nodes are not uniqued, so they must always recreated.
+static Metadata *mapDistinctNode(const MDNode *Node, ValueToValueMapTy &VM,
+ RemapFlags Flags,
+ ValueMapTypeRemapper *TypeMapper,
+ ValueMaterializer *Materializer) {
+ assert(Node->isDistinct() && "Expected distinct node");
+
+ // Create the node first so it's available for cyclical references.
+ SmallVector<Metadata *, 4> EmptyOps(Node->getNumOperands());
+ MDTuple *NewMD = MDTuple::getDistinct(Node->getContext(), EmptyOps);
+ mapToMetadata(VM, Node, NewMD);
+
+ // Fix the operands.
+ for (unsigned I = 0, E = Node->getNumOperands(); I != E; ++I)
+ NewMD->replaceOperandWith(I, mapMetadataOp(Node->getOperand(I), VM, Flags,
+ TypeMapper, Materializer));
+
+ return NewMD;
+}
+
static Metadata *MapMetadataImpl(const Metadata *MD, ValueToValueMapTy &VM,
RemapFlags Flags,
ValueMapTypeRemapper *TypeMapper,
if (Flags & RF_NoModuleLevelChanges)
return mapToSelf(VM, MD);
- // Distinct nodes are always recreated.
- if (Node->isDistinct()) {
- // Create the node first so it's available for cyclical references.
- SmallVector<Metadata *, 4> EmptyOps(Node->getNumOperands());
- MDTuple *NewMD = MDTuple::getDistinct(Node->getContext(), EmptyOps);
- mapToMetadata(VM, Node, NewMD);
-
- // Fix the operands.
- for (unsigned I = 0, E = Node->getNumOperands(); I != E; ++I)
- NewMD->replaceOperandWith(I, mapMetadataOp(Node->getOperand(I), VM, Flags,
- TypeMapper, Materializer));
-
- return NewMD;
- }
+ if (Node->isDistinct())
+ return mapDistinctNode(Node, VM, Flags, TypeMapper, Materializer);
// Create a dummy node in case we have a metadata cycle.
MDNodeFwdDecl *Dummy = MDNode::getTemporary(Node->getContext(), None);