}
static Metadata *mapToMetadata(ValueToValueMapTy &VM, const Metadata *Key,
- Metadata *Val) {
+ Metadata *Val, ValueMaterializer *Materializer,
+ RemapFlags Flags) {
VM.MD()[Key].reset(Val);
+ if (Materializer && !(Flags & RF_HaveUnmaterializedMetadata)) {
+ auto *N = dyn_cast_or_null<MDNode>(Val);
+ // Need to invoke this once we have non-temporary MD.
+ if (!N || !N->isTemporary())
+ Materializer->replaceTemporaryMetadata(Key, Val);
+ }
return Val;
}
-static Metadata *mapToSelf(ValueToValueMapTy &VM, const Metadata *MD) {
- return mapToMetadata(VM, MD, const_cast<Metadata *>(MD));
+static Metadata *mapToSelf(ValueToValueMapTy &VM, const Metadata *MD,
+ ValueMaterializer *Materializer, RemapFlags Flags) {
+ return mapToMetadata(VM, MD, const_cast<Metadata *>(MD), Materializer, Flags);
}
static Metadata *MapMetadataImpl(const Metadata *MD,
}
/// Resolve uniquing cycles involving the given metadata.
-static void resolveCycles(Metadata *MD) {
- if (auto *N = dyn_cast_or_null<MDNode>(MD))
+static void resolveCycles(Metadata *MD, bool MDMaterialized) {
+ if (auto *N = dyn_cast_or_null<MDNode>(MD)) {
+ if (!MDMaterialized && N->isTemporary())
+ return;
if (!N->isResolved())
- N->resolveCycles();
+ N->resolveCycles(MDMaterialized);
+ }
}
/// Remap the operands of an MDNode.
// Resolve uniquing cycles underneath distinct nodes on the fly so they
// don't infect later operands.
if (IsDistinct)
- resolveCycles(New);
+ resolveCycles(New, !(Flags & RF_HaveUnmaterializedMetadata));
}
}
// Remap operands later.
DistinctWorklist.push_back(NewMD);
- return mapToMetadata(VM, Node, NewMD);
+ return mapToMetadata(VM, Node, NewMD, Materializer, Flags);
}
/// \brief Map a uniqued MDNode.
ValueToValueMapTy &VM, RemapFlags Flags,
ValueMapTypeRemapper *TypeMapper,
ValueMaterializer *Materializer) {
- assert(Node->isUniqued() && "Expected uniqued node");
+ assert(((Flags & RF_HaveUnmaterializedMetadata) || Node->isUniqued()) &&
+ "Expected uniqued node");
// Create a temporary node and map it upfront in case we have a uniquing
// cycle. If necessary, this mapping will get updated by RAUW logic before
// returning.
auto ClonedMD = Node->clone();
- mapToMetadata(VM, Node, ClonedMD.get());
+ mapToMetadata(VM, Node, ClonedMD.get(), Materializer, Flags);
if (!remapOperands(*ClonedMD, DistinctWorklist, VM, Flags, TypeMapper,
Materializer)) {
// No operands changed, so use the original.
ClonedMD->replaceAllUsesWith(const_cast<MDNode *>(Node));
- return const_cast<MDNode *>(Node);
+ // Even though replaceAllUsesWith would have replaced the value map
+ // entry, we need to explictly map with the final non-temporary node
+ // to replace any temporary metadata via the callback.
+ return mapToSelf(VM, Node, Materializer, Flags);
}
- // Uniquify the cloned node.
- return MDNode::replaceWithUniqued(std::move(ClonedMD));
+ // Uniquify the cloned node. Explicitly map it with the final non-temporary
+ // node so that replacement of temporary metadata via the callback occurs.
+ return mapToMetadata(VM, Node,
+ MDNode::replaceWithUniqued(std::move(ClonedMD)),
+ Materializer, Flags);
}
static Metadata *MapMetadataImpl(const Metadata *MD,
return NewMD;
if (isa<MDString>(MD))
- return mapToSelf(VM, MD);
+ return mapToSelf(VM, MD, Materializer, Flags);
if (isa<ConstantAsMetadata>(MD))
if ((Flags & RF_NoModuleLevelChanges))
- return mapToSelf(VM, MD);
+ return mapToSelf(VM, MD, Materializer, Flags);
if (const auto *VMD = dyn_cast<ValueAsMetadata>(MD)) {
Value *MappedV =
MapValue(VMD->getValue(), VM, Flags, TypeMapper, Materializer);
if (VMD->getValue() == MappedV ||
(!MappedV && (Flags & RF_IgnoreMissingEntries)))
- return mapToSelf(VM, MD);
+ return mapToSelf(VM, MD, Materializer, Flags);
// FIXME: This assert crashes during bootstrap, but I think it should be
// correct. For now, just match behaviour from before the metadata/value
// assert((MappedV || (Flags & RF_NullMapMissingGlobalValues)) &&
// "Referenced metadata not in value map!");
if (MappedV)
- return mapToMetadata(VM, MD, ValueAsMetadata::get(MappedV));
+ return mapToMetadata(VM, MD, ValueAsMetadata::get(MappedV), Materializer,
+ Flags);
return nullptr;
}
// If this is a module-level metadata and we know that nothing at the
// module level is changing, then use an identity mapping.
if (Flags & RF_NoModuleLevelChanges)
- return mapToSelf(VM, MD);
+ return mapToSelf(VM, MD, Materializer, Flags);
// Require resolved nodes whenever metadata might be remapped.
- assert(Node->isResolved() && "Unexpected unresolved node");
+ assert(((Flags & RF_HaveUnmaterializedMetadata) || Node->isResolved()) &&
+ "Unexpected unresolved node");
+
+ if (Materializer && Node->isTemporary()) {
+ assert(Flags & RF_HaveUnmaterializedMetadata);
+ Metadata *TempMD =
+ Materializer->mapTemporaryMetadata(const_cast<Metadata *>(MD));
+ // If the above callback returned an existing temporary node, use it
+ // instead of the current temporary node. This happens when earlier
+ // function importing passes already created and saved a temporary
+ // metadata node for the same value id.
+ if (TempMD) {
+ mapToMetadata(VM, MD, TempMD, Materializer, Flags);
+ return TempMD;
+ }
+ }
if (Node->isDistinct())
return mapDistinctNode(Node, DistinctWorklist, VM, Flags, TypeMapper,
return NewMD;
// Resolve cycles involving the entry metadata.
- resolveCycles(NewMD);
+ resolveCycles(NewMD, !(Flags & RF_HaveUnmaterializedMetadata));
// Remap the operands of distinct MDNodes.
while (!DistinctWorklist.empty())
projects / oota-llvm.git / blobdiff