X87: [turbofan] Change Float64Max/Float64Min to JavaScript semantics.

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 959 matching lines @@
 
 void InstructionSelector::VisitFloat64Mod(Node* node) {
   X87OperandGenerator g(this);
   InstructionOperand temps[] = {g.TempRegister(eax)};
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float64Mod, g.DefineAsFixed(node, stX_0), 1, temps)->MarkAsCall();
 }
 
 
-void InstructionSelector::VisitFloat32Max(Node* node) {
-  X87OperandGenerator g(this);
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(1)));
-  Emit(kX87Float32Max, g.DefineAsFixed(node, stX_0), 0, nullptr);
-}
-
-
 void InstructionSelector::VisitFloat64Max(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float64Max, g.DefineAsFixed(node, stX_0), 0, nullptr);
 }
 
 
-void InstructionSelector::VisitFloat32Min(Node* node) {
-  X87OperandGenerator g(this);
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(0)));
-  Emit(kX87PushFloat32, g.NoOutput(), g.Use(node->InputAt(1)));
-  Emit(kX87Float32Min, g.DefineAsFixed(node, stX_0), 0, nullptr);
-}
-
-
 void InstructionSelector::VisitFloat64Min(Node* node) {
   X87OperandGenerator g(this);
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(0)));
   Emit(kX87PushFloat64, g.NoOutput(), g.Use(node->InputAt(1)));
   Emit(kX87Float64Min, g.DefineAsFixed(node, stX_0), 0, nullptr);
 }
 
 
 void InstructionSelector::VisitFloat32Abs(Node* node) {
   X87OperandGenerator g(this);
@@ skipping 689 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::kFloat32Max |
-      MachineOperatorBuilder::kFloat32Min |
-      MachineOperatorBuilder::kFloat64Max |
-      MachineOperatorBuilder::kFloat64Min |
       MachineOperatorBuilder::kWord32ShiftIsSafe;
   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