[stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs.

src/code-stubs.h

 // Copyright 2012 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_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 97 matching lines @@
   V(AllocateBool16x8)                       \
   V(AllocateInt8x16)                        \
   V(AllocateUint8x16)                       \
   V(AllocateBool8x16)                       \
   V(StringLength)                           \
   V(Add)                                    \
   V(Subtract)                               \
   V(Multiply)                               \
   V(Divide)                                 \
   V(Modulus)                                \
+  V(ShiftRight)                             \
+  V(ShiftRightLogical)                      \
+  V(ShiftLeft)                              \
   V(BitwiseAnd)                             \
   V(BitwiseOr)                              \
   V(BitwiseXor)                             \
   V(LessThan)                               \
   V(LessThanOrEqual)                        \
   V(GreaterThan)                            \
   V(GreaterThanOrEqual)                     \
   V(Equal)                                  \
   V(NotEqual)                               \
   V(StrictEqual)                            \
@@ skipping 578 matching lines @@
 };
 
 class ModulusStub final : public TurboFanCodeStub {
  public:
   explicit ModulusStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
   DEFINE_TURBOFAN_CODE_STUB(Modulus, TurboFanCodeStub);
 };
 
+class ShiftRightStub final : public TurboFanCodeStub {
+ public:
+  explicit ShiftRightStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
+  DEFINE_TURBOFAN_CODE_STUB(ShiftRight, TurboFanCodeStub);
+};
+
+class ShiftRightLogicalStub final : public TurboFanCodeStub {
+ public:
+  explicit ShiftRightLogicalStub(Isolate* isolate)
+      : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
+  DEFINE_TURBOFAN_CODE_STUB(ShiftRightLogical, TurboFanCodeStub);
+};
+
+class ShiftLeftStub final : public TurboFanCodeStub {
+ public:
+  explicit ShiftLeftStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
+  DEFINE_TURBOFAN_CODE_STUB(ShiftLeft, TurboFanCodeStub);
+};
+
 class BitwiseAndStub final : public TurboFanCodeStub {
  public:
   explicit BitwiseAndStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
   DEFINE_TURBOFAN_CODE_STUB(BitwiseAnd, TurboFanCodeStub);
 };
 
 class BitwiseOrStub final : public TurboFanCodeStub {
  public:
@@ skipping 1779 matching lines @@
 
   int slot_index() const { return SlotIndexBits::decode(sub_minor_key()); }
 
   static bool Accepted(const ScriptContextTable::LookupResult* lookup_result) {
     return ContextIndexBits::is_valid(lookup_result->context_index) &&
            SlotIndexBits::is_valid(lookup_result->slot_index);
   }
 
  private:
   static const int kContextIndexBits = 9;
-  static const int kSlotIndexBits = 13;
+  static const int kSlotIndexBits = 12;
   class ContextIndexBits : public BitField<int, 0, kContextIndexBits> {};
   class SlotIndexBits
       : public BitField<int, kContextIndexBits, kSlotIndexBits> {};
 
   DEFINE_CODE_STUB_BASE(ScriptContextFieldStub, HandlerStub);
 };
 
 
 class LoadScriptContextFieldStub : public ScriptContextFieldStub {
  public:
@@ skipping 601 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_