S390: [builtins] Migrate Math.log to TurboFan.

src/compiler/s390/instruction-selector-s390.cc

 // Copyright 2015 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/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/s390/frames-s390.h"
 
@@ skipping 1173 matching lines @@
 void InstructionSelector::VisitFloat64Min(Node* node) { UNREACHABLE(); }
 
 void InstructionSelector::VisitFloat32Abs(Node* node) {
   VisitRR(this, kS390_AbsFloat, node);
 }
 
 void InstructionSelector::VisitFloat64Abs(Node* node) {
   VisitRR(this, kS390_AbsDouble, node);
 }
 
+void InstructionSelector::VisitFloat64Log(Node* node) {
+  S390OperandGenerator g(this);
+  Emit(kS390_LogDouble, g.DefineAsFixed(node, d1),
+       g.UseFixed(node->InputAt(0), d1))
+      ->MarkAsCall();
+}
+
 void InstructionSelector::VisitFloat32Sqrt(Node* node) {
   VisitRR(this, kS390_SqrtFloat, node);
 }
 
 void InstructionSelector::VisitFloat64Sqrt(Node* node) {
   VisitRR(this, kS390_SqrtDouble, node);
 }
 
 void InstructionSelector::VisitFloat32RoundDown(Node* node) {
   VisitRR(this, kS390_FloorFloat, node);
@@ skipping 625 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8