[turbofan] Introduce simplified operator NumberAbs.

src/compiler/simplified-operator.cc

 // 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.
 
 #include "src/compiler/simplified-operator.h"
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 #include "src/types.h"
@@ skipping 233 matching lines @@
   V(NumberMultiply, Operator::kCommutative, 2)             \
   V(NumberDivide, Operator::kNoProperties, 2)              \
   V(NumberModulus, Operator::kNoProperties, 2)             \
   V(NumberBitwiseOr, Operator::kCommutative, 2)            \
   V(NumberBitwiseXor, Operator::kCommutative, 2)           \
   V(NumberBitwiseAnd, Operator::kCommutative, 2)           \
   V(NumberShiftLeft, Operator::kNoProperties, 2)           \
   V(NumberShiftRight, Operator::kNoProperties, 2)          \
   V(NumberShiftRightLogical, Operator::kNoProperties, 2)   \
   V(NumberImul, Operator::kCommutative, 2)                 \
+  V(NumberAbs, Operator::kNoProperties, 1)                 \
   V(NumberClz32, Operator::kNoProperties, 1)               \
   V(NumberCeil, Operator::kNoProperties, 1)                \
   V(NumberFloor, Operator::kNoProperties, 1)               \
   V(NumberFround, Operator::kNoProperties, 1)              \
   V(NumberAtan, Operator::kNoProperties, 1)                \
   V(NumberAtan2, Operator::kNoProperties, 2)               \
   V(NumberAtanh, Operator::kNoProperties, 1)               \
   V(NumberCbrt, Operator::kNoProperties, 1)                \
   V(NumberCos, Operator::kNoProperties, 1)                 \
   V(NumberExp, Operator::kNoProperties, 1)                 \
@@ skipping 294 matching lines @@
                         Operator::kNoDeopt | Operator::kNoThrow | properties,  \
                         #Name, value_input_count, 1, control_input_count,      \
                         output_count, 1, 0, access);                           \
   }
 ACCESS_OP_LIST(ACCESS)
 #undef ACCESS
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8