Extend JSBuiltinReducer to cover Math.sqrt as well.

src/compiler/machine-operator.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_MACHINE_OPERATOR_H_
 #define V8_COMPILER_MACHINE_OPERATOR_H_
 
 #include "src/compiler/machine-type.h"
 
 namespace v8 {
@@ skipping 111 matching lines @@
   const Operator* TruncateFloat64ToFloat32();
   const Operator* TruncateFloat64ToInt32();  // JavaScript semantics.
   const Operator* TruncateInt64ToInt32();
 
   // Floating point operators always operate with IEEE 754 round-to-nearest.
   const Operator* Float64Add();
   const Operator* Float64Sub();
   const Operator* Float64Mul();
   const Operator* Float64Div();
   const Operator* Float64Mod();
+  const Operator* Float64Sqrt();
 
   // Floating point comparisons complying to IEEE 754.
   const Operator* Float64Equal();
   const Operator* Float64LessThan();
   const Operator* Float64LessThanOrEqual();
 
   // load [base + index]
   const Operator* Load(LoadRepresentation rep);
 
   // store [base + index], value
@@ skipping 35 matching lines @@
  private:
   const MachineOperatorBuilderImpl& impl_;
   const MachineType word_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_OPERATOR_H_