[builtins] Implement Array.prototype.reduceRight in the CSA

src/code-stub-assembler.h

 // Copyright 2016 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_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 222 matching lines @@
 #undef SMI_COMPARISON_OP
   Node* SmiMax(Node* a, Node* b);
   Node* SmiMin(Node* a, Node* b);
   // Computes a % b for Smi inputs a and b; result is not necessarily a Smi.
   Node* SmiMod(Node* a, Node* b);
   // Computes a * b for Smi inputs a and b; result is not necessarily a Smi.
   Node* SmiMul(Node* a, Node* b);
 
   // Smi | HeapNumber operations.
   Node* NumberInc(Node* value);
+  Node* NumberDec(Node* value);
   void GotoIfNotNumber(Node* value, Label* is_not_number);
   void GotoIfNumber(Node* value, Label* is_number);
 
   // Allocate an object of the given size.
   Node* AllocateInNewSpace(Node* size, AllocationFlags flags = kNone);
   Node* AllocateInNewSpace(int size, AllocationFlags flags = kNone);
   Node* Allocate(Node* size, AllocationFlags flags = kNone);
   Node* Allocate(int size, AllocationFlags flags = kNone);
   Node* InnerAllocate(Node* previous, int offset);
   Node* InnerAllocate(Node* previous, Node* offset);
@@ skipping 1218 matching lines @@
   }
 #else
 #define CSA_SLOW_ASSERT(csa, x) ((void)0)
 #endif
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_