[turbofan] Use builtin inlining mechanism for Math.abs and Math.sqrt.

src/compiler/js-builtin-reducer.cc

 // Copyright 2014 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/diamond.h"
 #include "src/compiler/js-builtin-reducer.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/types.h"
@@ skipping 82 matching lines @@
 
  private:
   Node* node_;
 };
 
 
 JSBuiltinReducer::JSBuiltinReducer(JSGraph* jsgraph)
     : jsgraph_(jsgraph), simplified_(jsgraph->zone()) {}
 
 
-// ECMA-262, section 15.8.2.1.
-Reduction JSBuiltinReducer::ReduceMathAbs(Node* node) {
-  JSCallReduction r(node);
-  if (r.InputsMatchOne(Type::Unsigned32())) {
-    // Math.abs(a:uint32) -> a
-    return Replace(r.left());
-  }
-  if (r.InputsMatchOne(Type::Number())) {
-    // Math.abs(a:number) -> (a > 0 ? a : 0 - a)
-    Node* const value = r.left();
-    Node* const zero = jsgraph()->ZeroConstant();
-    return Replace(graph()->NewNode(
-        common()->Select(kMachNone),
-        graph()->NewNode(simplified()->NumberLessThan(), zero, value), value,
-        graph()->NewNode(simplified()->NumberSubtract(), zero, value)));
-  }
-  return NoChange();
-}
-
-
-// ECMA-262, section 15.8.2.17.
-Reduction JSBuiltinReducer::ReduceMathSqrt(Node* node) {
-  JSCallReduction r(node);
-  if (r.InputsMatchOne(Type::Number())) {
-    // Math.sqrt(a:number) -> Float64Sqrt(a)
-    Node* value = graph()->NewNode(machine()->Float64Sqrt(), r.left());
-    return Replace(value);
-  }
-  return NoChange();
-}
-
-
 // ECMA-262, section 15.8.2.11.
 Reduction JSBuiltinReducer::ReduceMathMax(Node* node) {
   JSCallReduction r(node);
   if (r.InputsMatchZero()) {
     // Math.max() -> -Infinity
     return Replace(jsgraph()->Constant(-V8_INFINITY));
   }
   if (r.InputsMatchOne(Type::Number())) {
     // Math.max(a:number) -> a
     return Replace(r.left());
@@ skipping 38 matching lines @@
   return NoChange();
 }
 
 
 Reduction JSBuiltinReducer::Reduce(Node* node) {
   JSCallReduction r(node);
 
   // Dispatch according to the BuiltinFunctionId if present.
   if (!r.HasBuiltinFunctionId()) return NoChange();
   switch (r.GetBuiltinFunctionId()) {
-    case kMathAbs:
-      return ReplaceWithPureReduction(node, ReduceMathAbs(node));
-    case kMathSqrt:
-      return ReplaceWithPureReduction(node, ReduceMathSqrt(node));
     case kMathMax:
       return ReplaceWithPureReduction(node, ReduceMathMax(node));
     case kMathImul:
       return ReplaceWithPureReduction(node, ReduceMathImul(node));
     case kMathFround:
       return ReplaceWithPureReduction(node, ReduceMathFround(node));
     default:
       break;
   }
   return NoChange();
 }
 
 
 Graph* JSBuiltinReducer::graph() const { return jsgraph()->graph(); }
 
 
 CommonOperatorBuilder* JSBuiltinReducer::common() const {
   return jsgraph()->common();
 }
 
 
 MachineOperatorBuilder* JSBuiltinReducer::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8