X87: [x64][ia32] Add Support for the Float64Neg and Float32Neg turbofan 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 1065 matching lines @@
        g.UseFixed(node, stX_0), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitFloat64RoundTiesEven(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87Float64Round | MiscField::encode(kRoundToNearest),
        g.UseFixed(node, stX_0), g.Use(node->InputAt(0)));
 }
 
-void InstructionSelector::VisitFloat32Neg(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat32Neg(Node* node) {
+  X87OperandGenerator g(this);
+  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
+  Emit(kX87Float32Neg, g.DefineAsFixed(node, stX_0), 0, nullptr);
+}
 
-void InstructionSelector::VisitFloat64Neg(Node* node) { UNREACHABLE(); }
+void InstructionSelector::VisitFloat64Neg(Node* node) {
+  X87OperandGenerator g(this);
+  Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
+  Emit(kX87Float64Neg, g.DefineAsFixed(node, stX_0), 0, nullptr);
+}
 
 void InstructionSelector::VisitFloat64Ieee754Binop(Node* node,
                                                    InstructionCode opcode) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(opcode, g.DefineAsFixed(node, stX_0), 0, nullptr)->MarkAsCall();
 }
 
 void InstructionSelector::VisitFloat64Ieee754Unop(Node* node,
@@ skipping 609 matching lines @@
   }
   inputs[input_count++] = g.UseUniqueRegister(value);
   InstructionCode code = opcode | AddressingModeField::encode(addressing_mode);
   Emit(code, 0, nullptr, input_count, inputs);
 }
 
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   MachineOperatorBuilder::Flags flags =
-      MachineOperatorBuilder::kWord32ShiftIsSafe;
+      MachineOperatorBuilder::kWord32ShiftIsSafe |
+      MachineOperatorBuilder::kFloat32Neg | MachineOperatorBuilder::kFloat64Neg;
   if (CpuFeatures::IsSupported(POPCNT)) {
     flags |= MachineOperatorBuilder::kWord32Popcnt;
   }
 
   flags |= MachineOperatorBuilder::kFloat32RoundDown |
            MachineOperatorBuilder::kFloat64RoundDown |
            MachineOperatorBuilder::kFloat32RoundUp |
            MachineOperatorBuilder::kFloat64RoundUp |
            MachineOperatorBuilder::kFloat32RoundTruncate |
            MachineOperatorBuilder::kFloat64RoundTruncate |
            MachineOperatorBuilder::kFloat32RoundTiesEven |
            MachineOperatorBuilder::kFloat64RoundTiesEven;
   return flags;
 }
 
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8