[turbofan] Introduce a dedicated CheckBounds 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_
 
 #include <iosfwd>
 
 // Opcodes for control operators.
@@ skipping 202 matching lines @@
   V(ChangeTaggedSignedToInt32)     \
   V(ChangeTaggedToInt32)           \
   V(ChangeTaggedToUint32)          \
   V(ChangeTaggedToFloat64)         \
   V(ChangeInt31ToTaggedSigned)     \
   V(ChangeInt32ToTagged)           \
   V(ChangeUint32ToTagged)          \
   V(ChangeFloat64ToTagged)         \
   V(ChangeTaggedToBit)             \
   V(ChangeBitToTagged)             \
+  V(CheckBounds)                   \
   V(CheckedUint32ToInt32)          \
   V(CheckedFloat64ToInt32)         \
   V(CheckedTaggedToInt32)          \
   V(CheckedTaggedToFloat64)        \
   V(CheckFloat64Hole)              \
   V(CheckTaggedHole)               \
   V(CheckIf)                       \
   V(TruncateTaggedToWord32)        \
   V(TruncateTaggedToFloat64)       \
   V(Allocate)                      \
@@ skipping 425 matching lines @@
   }
 };
 
 std::ostream& operator<<(std::ostream&, IrOpcode::Value);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_