[turbofan] Add PlainPrimitiveToNumber simplified operator.

src/compiler/opcodes.h

 // Copyright 2013 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_OPCODES_H_
 #define V8_COMPILER_OPCODES_H_
 
 // Opcodes for control operators.
 #define INNER_CONTROL_OP_LIST(V) \
   V(Dead)                        \
@@ skipping 130 matching lines @@
   V(NumberEqual)              \
   V(NumberLessThan)           \
   V(NumberLessThanOrEqual)    \
   V(NumberAdd)                \
   V(NumberSubtract)           \
   V(NumberMultiply)           \
   V(NumberDivide)             \
   V(NumberModulus)            \
   V(NumberToInt32)            \
   V(NumberToUint32)           \
+  V(PlainPrimitiveToNumber)   \
   V(ReferenceEqual)           \
   V(StringEqual)              \
   V(StringLessThan)           \
   V(StringLessThanOrEqual)    \
   V(StringAdd)                \
   V(ChangeTaggedToInt32)      \
   V(ChangeTaggedToUint32)     \
   V(ChangeTaggedToFloat64)    \
   V(ChangeInt32ToTagged)      \
   V(ChangeUint32ToTagged)     \
@@ skipping 167 matching lines @@
         return false;
     }
   }
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_