[turbofan] Change Float64Max/Float64Min to JavaScript semantics.

src/compiler/ia32/instruction-selector-ia32.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 973 matching lines @@
 
 void InstructionSelector::VisitFloat64Mod(Node* node) {
   IA32OperandGenerator g(this);
   InstructionOperand temps[] = {g.TempRegister(eax)};
   Emit(kSSEFloat64Mod, g.DefineSameAsFirst(node),
        g.UseRegister(node->InputAt(0)), g.UseRegister(node->InputAt(1)), 1,
        temps);
 }
 
 
-void InstructionSelector::VisitFloat32Max(Node* node) {
-  VisitRROFloat(this, node, kAVXFloat32Max, kSSEFloat32Max);
-}
-
-
 void InstructionSelector::VisitFloat64Max(Node* node) {
-  VisitRROFloat(this, node, kAVXFloat64Max, kSSEFloat64Max);
-}
-
-
-void InstructionSelector::VisitFloat32Min(Node* node) {
-  VisitRROFloat(this, node, kAVXFloat32Min, kSSEFloat32Min);
+  IA32OperandGenerator g(this);
+  InstructionOperand temps[] = {g.TempRegister()};
+  Emit(kSSEFloat64Max, g.DefineSameAsFirst(node),
+       g.UseRegister(node->InputAt(0)), g.Use(node->InputAt(1)),
+       arraysize(temps), temps);
 }
 
 
 void InstructionSelector::VisitFloat64Min(Node* node) {
-  VisitRROFloat(this, node, kAVXFloat64Min, kSSEFloat64Min);
+  IA32OperandGenerator g(this);
+  InstructionOperand temps[] = {g.TempRegister()};
+  Emit(kSSEFloat64Min, g.DefineSameAsFirst(node),
+       g.UseRegister(node->InputAt(0)), g.Use(node->InputAt(1)),
+       arraysize(temps), temps);
 }
 
 
 void InstructionSelector::VisitFloat32Abs(Node* node) {
   IA32OperandGenerator g(this);
   VisitFloatUnop(this, node, node->InputAt(0), kAVXFloat32Abs, kSSEFloat32Abs);
 }
 
 
 void InstructionSelector::VisitFloat64Abs(Node* node) {
@@ skipping 648 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 |
       MachineOperatorBuilder::kWord32Ctz;
   if (CpuFeatures::IsSupported(POPCNT)) {
     flags |= MachineOperatorBuilder::kWord32Popcnt;
   }
   if (CpuFeatures::IsSupported(SSE4_1)) {
     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