[turbofan] Support for %_DoubleHi, %_DoubleLo and %_ConstructDouble.

src/compiler/instruction-selector.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/compiler/instruction-selector.h"
 
 #include <limits>
 
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 681 matching lines @@
     case IrOpcode::kFloat64Sqrt:
     case IrOpcode::kFloat64Floor:
     case IrOpcode::kFloat64Ceil:
     case IrOpcode::kFloat64RoundTruncate:
     case IrOpcode::kFloat64RoundTiesAway:
       return kMachFloat64;
     case IrOpcode::kFloat64Equal:
     case IrOpcode::kFloat64LessThan:
     case IrOpcode::kFloat64LessThanOrEqual:
       return kMachBool;
+    case IrOpcode::kFloat64ExtractLowWord32:
+    case IrOpcode::kFloat64ExtractHighWord32:
+      return kMachInt32;
+    case IrOpcode::kFloat64InsertLowWord32:
+    case IrOpcode::kFloat64InsertHighWord32:
+      return kMachFloat64;
     default:
       V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
                node->opcode(), node->op()->mnemonic(), node->id());
   }
   return kMachNone;
 }
 
 
 void InstructionSelector::VisitNode(Node* node) {
   DCHECK_NOT_NULL(schedule()->block(node));  // should only use scheduled nodes.
@@ skipping 184 matching lines @@
     case IrOpcode::kFloat64LessThanOrEqual:
       return VisitFloat64LessThanOrEqual(node);
     case IrOpcode::kFloat64Floor:
       return MarkAsDouble(node), VisitFloat64Floor(node);
     case IrOpcode::kFloat64Ceil:
       return MarkAsDouble(node), VisitFloat64Ceil(node);
     case IrOpcode::kFloat64RoundTruncate:
       return MarkAsDouble(node), VisitFloat64RoundTruncate(node);
     case IrOpcode::kFloat64RoundTiesAway:
       return MarkAsDouble(node), VisitFloat64RoundTiesAway(node);
+    case IrOpcode::kFloat64ExtractLowWord32:
+      return VisitFloat64ExtractLowWord32(node);
+    case IrOpcode::kFloat64ExtractHighWord32:
+      return VisitFloat64ExtractHighWord32(node);
+    case IrOpcode::kFloat64InsertLowWord32:
+      return MarkAsDouble(node), VisitFloat64InsertLowWord32(node);
+    case IrOpcode::kFloat64InsertHighWord32:
+      return MarkAsDouble(node), VisitFloat64InsertHighWord32(node);
     case IrOpcode::kLoadStackPointer:
       return VisitLoadStackPointer(node);
     case IrOpcode::kCheckedLoad: {
       MachineType rep = OpParameter<MachineType>(node);
       MarkAsRepresentation(rep, node);
       return VisitCheckedLoad(node);
     }
     case IrOpcode::kCheckedStore:
       return VisitCheckedStore(node);
     default:
@@ skipping 341 matching lines @@
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::Flag::kNoFlags;
 }
 
 #endif  // !V8_TURBOFAN_BACKEND
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8