[region-isolation] Some cleanups in preparation for later work

include/swift/AST/ActorIsolation.h

@@ -245,10 +245,18 @@ class ActorIsolation {
     return !(lhs == rhs);
   }
 
+  void Profile(llvm::FoldingSetNodeID &id) {
+    id.AddInteger(getKind());
+    id.AddPointer(pointer);
+    id.AddBoolean(isolatedByPreconcurrency);
+    id.AddBoolean(silParsed);
+    id.AddInteger(parameterIndex);
+  }
+
   friend llvm::hash_code hash_value(const ActorIsolation &state) {
-    return llvm::hash_combine(
-        state.kind, state.pointer, state.isolatedByPreconcurrency,
-        state.parameterIndex);
+    return llvm::hash_combine(state.kind, state.pointer,
+                              state.isolatedByPreconcurrency, state.silParsed,
+                              state.parameterIndex);
   }
 
   void print(llvm::raw_ostream &os) const {
@@ -278,7 +286,15 @@ class ActorIsolation {
   void printForDiagnostics(llvm::raw_ostream &os,
                            StringRef openingQuotationMark = "'") const;
 
-  SWIFT_DEBUG_DUMP { print(llvm::dbgs()); }
+  SWIFT_DEBUG_DUMP {
+    print(llvm::dbgs());
+    llvm::dbgs() << '\n';
+  }
+
+  // Defined out of line to prevent linker errors since libswiftBasic would
+  // include this header exascerbating a layering violation where libswiftBasic
+  // depends on libswiftAST.
+  SWIFT_DEBUG_DUMPER(dumpForDiagnostics());
 };
 
 /// Determine how the given value declaration is isolated.

include/swift/Basic/ImmutablePointerSet.h

@@ -250,6 +250,55 @@ class ImmutablePointerSetFactory {
     return NewNode;
   }
 
+  template <typename U, typename... Args>
+  struct IsTrivialTypedPointerAndHasProfile {
+    constexpr static bool hasProfile =
+        std::is_same_v<decltype(std::remove_pointer<U>::type::Profile(
+                           std::declval<Args>()...)),
+                       void>;
+    constexpr static bool value =
+        hasProfile && std::is_trivial_v<U> && std::is_pointer_v<U>;
+  };
+
+  /// Emplace a new value with \p args if we do not yet have one. We allocate
+  /// the object with our bump ptr allocator, so we require that the type be
+  /// trivial.
+  template <typename... Args>
+  typename std::enable_if_t<IsTrivialTypedPointerAndHasProfile<
+                                T, llvm::FoldingSetNodeID &, Args...>::value,
+                            PtrSet> *
+  emplace(Args... args) {
+    llvm::FoldingSetNodeID ID;
+    using NoPointerTy = typename std::remove_pointer<T>::type;
+    NoPointerTy::Profile(ID, std::forward<Args>(args)...);
+
+    void *InsertPt;
+    if (auto *PSet = Set.FindNodeOrInsertPos(ID, InsertPt)) {
+      return PSet;
+    }
+
+    size_t NumElts = 1;
+    size_t MemSize = sizeof(PtrSet) + sizeof(NoPointerTy);
+
+    // Allocate the memory.
+    auto *Mem =
+        reinterpret_cast<PtrSet *>(Allocator.Allocate(MemSize, AllocAlignment));
+
+    // Copy in the pointers into the tail allocated memory. We do not need to do
+    // any sorting/uniquing ourselves since we assume that our users perform
+    // this task for us.
+    llvm::MutableArrayRef<NoPointerTy *> DataMem(
+        reinterpret_cast<NoPointerTy **>(&Mem[1]), NumElts);
+    NoPointerTy *type =
+        new (Allocator) NoPointerTy(std::forward<Args>(args)...);
+    DataMem[0] = type;
+
+    // Allocate the new node and insert it into the Set.
+    auto *NewNode = new (Mem) PtrSet(this, DataMem);
+    Set.InsertNode(NewNode, InsertPt);
+    return NewNode;
+  }
+
   PtrSet *get(T value) {
     llvm::FoldingSetNodeID ID;
     ID.AddPointer(PtrTraits::getAsVoidPointer(value));

include/swift/SILOptimizer/Analysis/RegionAnalysis.h

@@ -52,6 +52,11 @@ inline bool isNonSendableType(SILType type, SILFunction *fn) {
   return !type.isSendable(fn);
 }
 
+/// Return the ApplyIsolationCrossing for a specific \p inst if it
+/// exists. Returns std::nullopt otherwise.
+std::optional<ApplyIsolationCrossing>
+getApplyIsolationCrossing(SILInstruction *inst);
+
 // This is our PImpl type that we use to hide all of the internal details of
 // the computation.
 class PartitionOpTranslator;
@@ -135,7 +140,7 @@ using TrackedValueFlagSet = OptionSet<TrackableValueFlag>;
 class regionanalysisimpl::TrackableValueState {
   unsigned id;
   TrackedValueFlagSet flagSet = {TrackableValueFlag::isMayAlias};
-  IsolationRegionInfo regionInfo = IsolationRegionInfo::getDisconnected();
+  SILIsolationInfo regionInfo = SILIsolationInfo::getDisconnected();
 
 public:
   TrackableValueState(unsigned newID) : id(newID) {}
@@ -152,19 +157,19 @@ class regionanalysisimpl::TrackableValueState {
 
   bool isNonSendable() const { return !isSendable(); }
 
-  IsolationRegionInfo::Kind getIsolationRegionInfoKind() const {
+  SILIsolationInfo::Kind getIsolationRegionInfoKind() const {
     return regionInfo.getKind();
   }
 
   ActorIsolation getActorIsolation() const {
     return regionInfo.getActorIsolation().value();
   }
 
-  void mergeIsolationRegionInfo(IsolationRegionInfo newRegionInfo) {
+  void mergeIsolationRegionInfo(SILIsolationInfo newRegionInfo) {
     regionInfo = regionInfo.merge(newRegionInfo);
   }
 
-  IsolationRegionInfo getIsolationRegionInfo() const { return regionInfo; }
+  SILIsolationInfo getIsolationRegionInfo() const { return regionInfo; }
 
   TrackableValueID getID() const { return TrackableValueID(id); }
 
@@ -263,7 +268,7 @@ class regionanalysisimpl::TrackableValue {
 
   bool isNonSendable() const { return !isSendable(); }
 
-  IsolationRegionInfo getIsolationRegionInfo() const {
+  SILIsolationInfo getIsolationRegionInfo() const {
     return valueState.getIsolationRegionInfo();
   }
 
@@ -333,8 +338,8 @@ class RegionAnalysisValueMap {
   /// exists. Returns nullptr otherwise.
   SILInstruction *maybeGetActorIntroducingInst(Element trackableValueID) const;
 
-  IsolationRegionInfo getIsolationRegion(Element trackableValueID) const;
-  IsolationRegionInfo getIsolationRegion(SILValue trackableValueID) const;
+  SILIsolationInfo getIsolationRegion(Element trackableValueID) const;
+  SILIsolationInfo getIsolationRegion(SILValue trackableValueID) const;
 
   void print(llvm::raw_ostream &os) const;
   SWIFT_DEBUG_DUMP { print(llvm::dbgs()); }
@@ -357,8 +362,8 @@ class RegionAnalysisValueMap {
   std::optional<TrackableValue> tryToTrackValue(SILValue value) const;
   TrackableValue
   getActorIntroducingRepresentative(SILInstruction *introducingInst,
-                                    IsolationRegionInfo isolation) const;
-  bool mergeIsolationRegionInfo(SILValue value, IsolationRegionInfo isolation);
+                                    SILIsolationInfo isolation) const;
+  bool mergeIsolationRegionInfo(SILValue value, SILIsolationInfo isolation);
   bool valueHasID(SILValue value, bool dumpIfHasNoID = false);
   TrackableValueID lookupValueID(SILValue value);
 };