[stubs] Introduce AddStub and SubtractStub.

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 93 matching lines @@
   V(AllocateInt32x4)                        \
   V(AllocateUint32x4)                       \
   V(AllocateBool32x4)                       \
   V(AllocateInt16x8)                        \
   V(AllocateUint16x8)                       \
   V(AllocateBool16x8)                       \
   V(AllocateInt8x16)                        \
   V(AllocateUint8x16)                       \
   V(AllocateBool8x16)                       \
   V(StringLength)                           \
+  V(Add)                                    \
+  V(Subtract)                               \
   V(LessThan)                               \
   V(LessThanOrEqual)                        \
   V(GreaterThan)                            \
   V(GreaterThanOrEqual)                     \
   V(Equal)                                  \
   V(NotEqual)                               \
   V(StrictEqual)                            \
   V(StrictNotEqual)                         \
   V(StringEqual)                            \
   V(StringNotEqual)                         \
@@ skipping 536 matching lines @@
   explicit StringLengthStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   Code::Kind GetCodeKind() const override { return Code::HANDLER; }
   InlineCacheState GetICState() const override { return MONOMORPHIC; }
   ExtraICState GetExtraICState() const override { return Code::LOAD_IC; }
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(LoadWithVector);
   DEFINE_TURBOFAN_CODE_STUB(StringLength, TurboFanCodeStub);
 };
 
+class AddStub final : public TurboFanCodeStub {
+ public:
+  explicit AddStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
+  DEFINE_TURBOFAN_CODE_STUB(Add, TurboFanCodeStub);
+};
+
+class SubtractStub final : public TurboFanCodeStub {
+ public:
+  explicit SubtractStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp);
+  DEFINE_TURBOFAN_CODE_STUB(Subtract, TurboFanCodeStub);
+};
+
 class LessThanStub final : public TurboFanCodeStub {
  public:
   explicit LessThanStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Compare);
   DEFINE_TURBOFAN_CODE_STUB(LessThan, TurboFanCodeStub);
 };
 
 class LessThanOrEqualStub final : public TurboFanCodeStub {
  public:
@@ skipping 2369 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_