1 files changed, 92 insertions, 0 deletions
diff --git a/deps/v8/src/crankshaft/hydrogen-types.h b/deps/v8/src/crankshaft/hydrogen-types.h
new file mode 100644
index 0000000000..87148ee4cd
--- /dev/null
+++ b/deps/v8/src/crankshaft/hydrogen-types.h
@@ -0,0 +1,92 @@
+// Copyright 2014 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_CRANKSHAFT_HYDROGEN_TYPES_H_
+#define V8_CRANKSHAFT_HYDROGEN_TYPES_H_
+
+#include <climits>
+#include <iosfwd>
+
+#include "src/base/macros.h"
+
+namespace v8 {
+namespace internal {
+
+// Forward declarations.
+template <typename T> class Handle;
+class Object;
+
+#define HTYPE_LIST(V)                               \
+  V(Any, 0x0)             /* 0000 0000 0000 0000 */ \
+  V(Tagged, 0x1)          /* 0000 0000 0000 0001 */ \
+  V(TaggedPrimitive, 0x5) /* 0000 0000 0000 0101 */ \
+  V(TaggedNumber, 0xd)    /* 0000 0000 0000 1101 */ \
+  V(Smi, 0x1d)            /* 0000 0000 0001 1101 */ \
+  V(HeapObject, 0x21)     /* 0000 0000 0010 0001 */ \
+  V(HeapPrimitive, 0x25)  /* 0000 0000 0010 0101 */ \
+  V(Null, 0x27)           /* 0000 0000 0010 0111 */ \
+  V(HeapNumber, 0x2d)     /* 0000 0000 0010 1101 */ \
+  V(String, 0x65)         /* 0000 0000 0110 0101 */ \
+  V(Boolean, 0xa5)        /* 0000 0000 1010 0101 */ \
+  V(Undefined, 0x125)     /* 0000 0001 0010 0101 */ \
+  V(JSReceiver, 0x221)    /* 0000 0010 0010 0001 */ \
+  V(JSObject, 0x621)      /* 0000 0110 0010 0001 */ \
+  V(JSArray, 0xe21)       /* 0000 1110 0010 0001 */ \
+  V(None, 0xfff)          /* 0000 1111 1111 1111 */
+
+class HType final {
+ public:
+  #define DECLARE_CONSTRUCTOR(Name, mask) \
+    static HType Name() WARN_UNUSED_RESULT { return HType(k##Name); }
+  HTYPE_LIST(DECLARE_CONSTRUCTOR)
+  #undef DECLARE_CONSTRUCTOR
+
+  // Return the weakest (least precise) common type.
+  HType Combine(HType other) const WARN_UNUSED_RESULT {
+    return HType(static_cast<Kind>(kind_ & other.kind_));
+  }
+
+  bool Equals(HType other) const WARN_UNUSED_RESULT {
+    return kind_ == other.kind_;
+  }
+
+  bool IsSubtypeOf(HType other) const WARN_UNUSED_RESULT {
+    return Combine(other).Equals(other);
+  }
+
+  #define DECLARE_IS_TYPE(Name, mask)               \
+    bool Is##Name() const WARN_UNUSED_RESULT {   \
+      return IsSubtypeOf(HType::Name());            \
+    }
+  HTYPE_LIST(DECLARE_IS_TYPE)
+  #undef DECLARE_IS_TYPE
+
+  template <class T>
+  static HType FromType(typename T::TypeHandle type) WARN_UNUSED_RESULT;
+  static HType FromValue(Handle<Object> value) WARN_UNUSED_RESULT;
+
+  friend std::ostream& operator<<(std::ostream& os, const HType& t);
+
+ private:
+  enum Kind {
+    #define DECLARE_TYPE(Name, mask) k##Name = mask,
+    HTYPE_LIST(DECLARE_TYPE)
+    #undef DECLARE_TYPE
+    LAST_KIND = kNone
+  };
+
+  // Make sure type fits in int16.
+  STATIC_ASSERT(LAST_KIND < (1 << (CHAR_BIT * sizeof(int16_t))));
+
+  explicit HType(Kind kind) : kind_(kind) { }
+
+  int16_t kind_;
+};
+
+
+std::ostream& operator<<(std::ostream& os, const HType& t);
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_CRANKSHAFT_HYDROGEN_TYPES_H_