X87: [turbofan] Remove the FloatXXSubPreserveNan operators.

src/compiler/x87/instruction-selector-x87.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/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
@@ skipping 899 matching lines @@
 }
 
 
 void InstructionSelector::VisitFloat32Sub(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float32Sub, g.DefineAsFixed(node, stX_0), 0, nullptr);
 }
 
-void InstructionSelector::VisitFloat32SubPreserveNan(Node* node) {
-  X87OperandGenerator g(this);
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(1)));
-  Emit(kX87Float32Sub, g.DefineAsFixed(node, stX_0), 0, nullptr);
-}
-
 void InstructionSelector::VisitFloat64Sub(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float64Sub, g.DefineAsFixed(node, stX_0), 0, nullptr);
 }
 
-void InstructionSelector::VisitFloat64SubPreserveNan(Node* node) {
-  X87OperandGenerator g(this);
-  Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
-  Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
-  Emit(kX87Float64Sub, g.DefineAsFixed(node, stX_0), 0, nullptr);
-}
-
-
 void InstructionSelector::VisitFloat32Mul(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float32Mul, g.DefineAsFixed(node, stX_0), 0, nullptr);
 }
 
 
 void InstructionSelector::VisitFloat64Mul(Node* node) {
   X87OperandGenerator g(this);
@@ skipping 790 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8