1 files changed, 52 insertions, 0 deletions
diff --git a/deps/v8/src/compiler/write-barrier-kind.h b/deps/v8/src/compiler/write-barrier-kind.h
new file mode 100644
index 0000000000..1f38049f2d
--- /dev/null
+++ b/deps/v8/src/compiler/write-barrier-kind.h
@@ -0,0 +1,52 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_COMPILER_WRITE_BARRIER_KIND_H_
+#define V8_COMPILER_WRITE_BARRIER_KIND_H_
+
+#include <ostream>
+
+#include "src/base/logging.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Write barrier kinds supported by compiler.
+enum WriteBarrierKind : uint8_t {
+  kNoWriteBarrier,
+  kAssertNoWriteBarrier,
+  kMapWriteBarrier,
+  kPointerWriteBarrier,
+  kEphemeronKeyWriteBarrier,
+  kFullWriteBarrier
+};
+
+inline size_t hash_value(WriteBarrierKind kind) {
+  return static_cast<uint8_t>(kind);
+}
+
+inline std::ostream& operator<<(std::ostream& os, WriteBarrierKind kind) {
+  switch (kind) {
+    case kNoWriteBarrier:
+      return os << "NoWriteBarrier";
+    case kAssertNoWriteBarrier:
+      return os << "AssertNoWriteBarrier";
+    case kMapWriteBarrier:
+      return os << "MapWriteBarrier";
+    case kPointerWriteBarrier:
+      return os << "PointerWriteBarrier";
+    case kEphemeronKeyWriteBarrier:
+      return os << "EphemeronKeyWriteBarrier";
+    case kFullWriteBarrier:
+      return os << "FullWriteBarrier";
+  }
+  UNREACHABLE();
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_WRITE_BARRIER_KIND_H_