diff --git a/clang/include/clang/Analysis/FlowSensitive/DataflowAnalysis.h b/clang/include/clang/Analysis/FlowSensitive/DataflowAnalysis.h
new file mode 100644
--- /dev/null
+++ b/clang/include/clang/Analysis/FlowSensitive/DataflowAnalysis.h
@@ -0,0 +1,164 @@
+//===- DataflowAnalysis.h ---------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines base types for building dataflow analyses that run over
+//  Control-Flow Graphs (CFGs).
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_DATAFLOWANALYSIS_H
+#define LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_DATAFLOWANALYSIS_H
+
+#include <cassert>
+#include <utility>
+#include <vector>
+
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Stmt.h"
+#include "clang/Analysis/CFG.h"
+#include "clang/Analysis/FlowSensitive/Environment.h"
+#include "llvm/ADT/Any.h"
+#include "llvm/ADT/Optional.h"
+
+namespace clang {
+namespace dataflow {
+
+/// Type-erased lattice element container.
+///
+/// Requirements:
+///
+///  The type of the object stored in the container must be a bounded
+///  join-semilattice.
+struct AnyLatticeElement {
+  llvm::Any Value;
+};
+
+/// Effect indicating whether a lattice join operation resulted in a new value.
+enum class LatticeJoinEffect {
+  Unchanged,
+  Changed,
+};
+
+/// Type-erased base class for dataflow analyses built on a single lattice type.
+class DataflowAnalysisDynamic {
+public:
+  /// Returns the `ASTContext` that is used by the analysis.
+  virtual ASTContext &getASTContext() = 0;
+
+  /// Returns a lattice element that models the initial state of a basic block.
+  virtual AnyLatticeElement initialElementDynamic() = 0;
+
+  /// Joins two lattice elements by computing their least upper bound. Places
+  /// the join result in the left element and returns an effect indicating
+  /// whether any changes were made to it.
+  virtual LatticeJoinEffect joinDynamic(AnyLatticeElement &,
+                                        const AnyLatticeElement &) = 0;
+
+  /// Returns true if and only if the two given lattice elements are equal.
+  virtual bool isEqualDynamic(const AnyLatticeElement &,
+                              const AnyLatticeElement &) = 0;
+
+  /// Applies the analysis transfer function for a given statement and lattice
+  /// element.
+  virtual AnyLatticeElement
+  transferDynamic(const Stmt *, const AnyLatticeElement &, Environment &) = 0;
+};
+
+/// Base class template for dataflow analyses built on a single lattice type.
+///
+/// Requirements:
+///
+///  `Derived` must be derived from a specialization of this class template and
+///  must provide the following public members:
+///   * `LatticeT InitialElement()` - returns a lattice element that models the
+///     initial state of a basic block;
+///   * `LatticeT Transfer(const Stmt*, const LatticeT&, Environment&)` -
+///   applies
+///     the analysis transfer function for a given statement and lattice
+///     element.
+///
+///  `LatticeT` is a bounded join-semilattice that is used by `Derived` and must
+///  provide the following public members:
+///   * `LatticeJoinEffect Join(const LatticeT&)` - joins the object and the
+///     argument by computing their least upper bound, modifies the object if
+///     necessary, and returns an effect indicating whether any changes were
+///     made to it;
+///   * `bool operator==(const LatticeT&) const` - returns true if and only if
+///     the object is equal to the argument.
+template <typename Derived, typename LatticeT>
+class DataflowAnalysis : public DataflowAnalysisDynamic {
+public:
+  /// Bounded join-semilattice that is used in the analysis.
+  using Lattice = LatticeT;
+
+  explicit DataflowAnalysis(ASTContext &Context) : Context(Context) {}
+
+  ASTContext &getASTContext() final { return Context; }
+
+  AnyLatticeElement initialElementDynamic() final {
+    return AnyLatticeElement{static_cast<Derived *>(this)->initialElement()};
+  }
+
+  LatticeJoinEffect joinDynamic(AnyLatticeElement &E1,
+                                const AnyLatticeElement &E2) final {
+    Lattice *L1 = llvm::any_cast<Lattice>(&E1.Value);
+    assert(L1 != nullptr);
+    const Lattice *L2 = llvm::any_cast<Lattice>(&E2.Value);
+    assert(L2 != nullptr);
+    return L1->join(*L2);
+  }
+
+  bool isEqualDynamic(const AnyLatticeElement &E1,
+                      const AnyLatticeElement &E2) final {
+    const Lattice *L1 = llvm::any_cast<Lattice>(&E1.Value);
+    assert(L1 != nullptr);
+    const Lattice *L2 = llvm::any_cast<Lattice>(&E2.Value);
+    assert(L2 != nullptr);
+    return *L1 == *L2;
+  }
+
+  AnyLatticeElement transferDynamic(const Stmt *Stmt,
+                                    const AnyLatticeElement &E,
+                                    Environment &Environment) final {
+    const Lattice *L = llvm::any_cast<Lattice>(&E.Value);
+    assert(L != nullptr);
+    return AnyLatticeElement{
+        static_cast<Derived *>(this)->transfer(Stmt, *L, Environment)};
+  }
+
+private:
+  ASTContext &Context;
+};
+
+/// Model of the program at a given program point.
+struct DataflowAnalysisState {
+  DataflowAnalysisState(AnyLatticeElement Lattice, Environment Env)
+      : Lattice(std::move(Lattice)), Env(std::move(Env)) {}
+
+  /// Model of a program property.
+  AnyLatticeElement Lattice;
+
+  /// Model of the state of the program (store and heap).
+  Environment Env;
+};
+
+/// Performs dataflow analysis and returns a mapping from basic block IDs to
+/// dataflow analysis states that model the respective basic blocks.
+///
+/// Requirements:
+///
+///  `Cfg` must have been built with `CFG::BuildOptions::setAllAlwaysAdd()` to
+///  ensure that all sub-expressions in a basic block are evaluated.
+std::vector<llvm::Optional<DataflowAnalysisState>>
+runDataflowAnalysis(const CFG &Cfg, DataflowAnalysisDynamic &Analysis,
+                    const Environment &InitEnv);
+
+} // namespace dataflow
+} // namespace clang
+
+#endif // LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_DATAFLOWANALYSIS_H
diff --git a/clang/include/clang/Analysis/FlowSensitive/Environment.h b/clang/include/clang/Analysis/FlowSensitive/Environment.h
new file mode 100644
--- /dev/null
+++ b/clang/include/clang/Analysis/FlowSensitive/Environment.h
@@ -0,0 +1,27 @@
+//===-- Environment.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines an Environment class that is used by dataflow analyses
+//  that run over Control-Flow Graphs (CFGs) to keep track of the state of the
+//  program at given program points.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_ENVIRONMENT_H
+#define LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_ENVIRONMENT_H
+
+namespace clang {
+namespace dataflow {
+
+/// Holds the state of the program (store and heap) at a given program point.
+class Environment {};
+
+} // namespace dataflow
+} // namespace clang
+
+#endif // LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_ENVIRONMENT_H
diff --git a/clang/lib/Analysis/CMakeLists.txt b/clang/lib/Analysis/CMakeLists.txt
--- a/clang/lib/Analysis/CMakeLists.txt
+++ b/clang/lib/Analysis/CMakeLists.txt
@@ -44,3 +44,4 @@
   )
 
 add_subdirectory(plugins)
+add_subdirectory(FlowSensitive)
diff --git a/clang/lib/Analysis/FlowSensitive/CMakeLists.txt b/clang/lib/Analysis/FlowSensitive/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/clang/lib/Analysis/FlowSensitive/CMakeLists.txt
@@ -0,0 +1,7 @@
+add_clang_library(clangAnalysisFlowSensitive
+  DataflowAnalysis.cpp
+
+  LINK_LIBS
+  clangAnalysis
+  clangAST
+  )
diff --git a/clang/lib/Analysis/FlowSensitive/DataflowAnalysis.cpp b/clang/lib/Analysis/FlowSensitive/DataflowAnalysis.cpp
new file mode 100644
--- /dev/null
+++ b/clang/lib/Analysis/FlowSensitive/DataflowAnalysis.cpp
@@ -0,0 +1,33 @@
+//===- DataflowAnalysis.cpp -----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines base types for building dataflow analyses that run over
+//  Control-Flow Graphs (CFGs).
+//
+//===----------------------------------------------------------------------===//
+
+#include <vector>
+
+#include "clang/Analysis/CFG.h"
+#include "clang/Analysis/FlowSensitive/DataflowAnalysis.h"
+#include "clang/Analysis/FlowSensitive/Environment.h"
+#include "llvm/ADT/Optional.h"
+
+namespace clang {
+namespace dataflow {
+
+std::vector<llvm::Optional<DataflowAnalysisState>>
+runDataflowAnalysis(const CFG &Cfg, DataflowAnalysisDynamic &Analysis,
+                    const Environment &InitEnv) {
+  // FIXME: Implement work list-based algorithm to compute the fixed
+  // point of `Analysis::transform` for every basic block in `Cfg`.
+  return {};
+}
+
+} // namespace dataflow
+} // namespace clang