1 files changed, 62 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Analysis/FlowSensitive/Value.cpp b/contrib/llvm-project/clang/lib/Analysis/FlowSensitive/Value.cpp
new file mode 100644
index 000000000000..7fad6deb0e91
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/Analysis/FlowSensitive/Value.cpp
@@ -0,0 +1,62 @@
+//===-- Value.cpp -----------------------------------------------*- 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 support functions for the `Value` type.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Analysis/FlowSensitive/Value.h"
+#include "clang/Analysis/FlowSensitive/DebugSupport.h"
+#include "llvm/Support/Casting.h"
+
+namespace clang {
+namespace dataflow {
+
+static bool areEquivalentIndirectionValues(const Value &Val1,
+                                           const Value &Val2) {
+  if (auto *IndVal1 = dyn_cast<PointerValue>(&Val1)) {
+    auto *IndVal2 = cast<PointerValue>(&Val2);
+    return &IndVal1->getPointeeLoc() == &IndVal2->getPointeeLoc();
+  }
+  return false;
+}
+
+bool areEquivalentValues(const Value &Val1, const Value &Val2) {
+  if (&Val1 == &Val2)
+    return true;
+  if (Val1.getKind() != Val2.getKind())
+    return false;
+  // If values are distinct and have properties, we don't consider them equal,
+  // leaving equality up to the user model.
+  if (!Val1.properties().empty() || !Val2.properties().empty())
+    return false;
+  if (isa<TopBoolValue>(&Val1))
+    return true;
+  return areEquivalentIndirectionValues(Val1, Val2);
+}
+
+raw_ostream &operator<<(raw_ostream &OS, const Value &Val) {
+  switch (Val.getKind()) {
+  case Value::Kind::Integer:
+    return OS << "Integer(@" << &Val << ")";
+  case Value::Kind::Pointer:
+    return OS << "Pointer(" << &cast<PointerValue>(Val).getPointeeLoc() << ")";
+  case Value::Kind::Record:
+    return OS << "Record(" << &cast<RecordValue>(Val).getLoc() << ")";
+  case Value::Kind::TopBool:
+    return OS << "TopBool(" << cast<TopBoolValue>(Val).getAtom() << ")";
+  case Value::Kind::AtomicBool:
+    return OS << "AtomicBool(" << cast<AtomicBoolValue>(Val).getAtom() << ")";
+  case Value::Kind::FormulaBool:
+    return OS << "FormulaBool(" << cast<FormulaBoolValue>(Val).formula() << ")";
+  }
+  llvm_unreachable("Unknown clang::dataflow::Value::Kind enum");
+}
+
+} // namespace dataflow
+} // namespace clang