[turbofan] Make MachineType a pair of enums.

src/compiler/x64/instruction-selector-x64.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 <algorithm>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
@@ skipping 90 matching lines @@
     }
   }
 
   bool CanBeBetterLeftOperand(Node* node) const {
     return !selector()->IsLive(node);
   }
 };
 
 
 void InstructionSelector::VisitLoad(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<LoadRepresentation>(node));
-  MachineType typ = TypeOf(OpParameter<LoadRepresentation>(node));
+  LoadRepresentation load_rep = LoadRepresentationOf(node->op());
   X64OperandGenerator g(this);
 
   ArchOpcode opcode;
-  switch (rep) {
-    case kRepFloat32:
+  switch (load_rep.representation()) {
+    case MachineRepresentation::kFloat32:
       opcode = kX64Movss;
       break;
-    case kRepFloat64:
+    case MachineRepresentation::kFloat64:
       opcode = kX64Movsd;
       break;
-    case kRepBit:  // Fall through.
-    case kRepWord8:
-      opcode = typ == kTypeInt32 ? kX64Movsxbl : kX64Movzxbl;
+    case MachineRepresentation::kBit:  // Fall through.
+    case MachineRepresentation::kWord8:
+      opcode = load_rep.IsSigned() ? kX64Movsxbl : kX64Movzxbl;
       break;
-    case kRepWord16:
-      opcode = typ == kTypeInt32 ? kX64Movsxwl : kX64Movzxwl;
+    case MachineRepresentation::kWord16:
+      opcode = load_rep.IsSigned() ? kX64Movsxwl : kX64Movzxwl;
       break;
-    case kRepWord32:
+    case MachineRepresentation::kWord32:
       opcode = kX64Movl;
       break;
-    case kRepTagged:  // Fall through.
-    case kRepWord64:
+    case MachineRepresentation::kTagged:  // Fall through.
+    case MachineRepresentation::kWord64:
       opcode = kX64Movq;
       break;
     default:
       UNREACHABLE();
       return;
   }
 
   InstructionOperand outputs[1];
   outputs[0] = g.DefineAsRegister(node);
   InstructionOperand inputs[3];
   size_t input_count = 0;
   AddressingMode mode =
       g.GetEffectiveAddressMemoryOperand(node, inputs, &input_count);
   InstructionCode code = opcode | AddressingModeField::encode(mode);
   Emit(code, 1, outputs, input_count, inputs);
 }
 
 
 void InstructionSelector::VisitStore(Node* node) {
   X64OperandGenerator g(this);
   Node* base = node->InputAt(0);
   Node* index = node->InputAt(1);
   Node* value = node->InputAt(2);
 
   StoreRepresentation store_rep = OpParameter<StoreRepresentation>(node);
   WriteBarrierKind write_barrier_kind = store_rep.write_barrier_kind();
-  MachineType rep = RepresentationOf(store_rep.machine_type());
+  MachineRepresentation rep = store_rep.machine_type().representation();
 
   if (write_barrier_kind != kNoWriteBarrier) {
-    DCHECK_EQ(kRepTagged, rep);
+    DCHECK_EQ(MachineRepresentation::kTagged, rep);
     AddressingMode addressing_mode;
     InstructionOperand inputs[3];
     size_t input_count = 0;
     inputs[input_count++] = g.UseUniqueRegister(base);
     if (g.CanBeImmediate(index)) {
       inputs[input_count++] = g.UseImmediate(index);
       addressing_mode = kMode_MRI;
     } else {
       inputs[input_count++] = g.UseUniqueRegister(index);
       addressing_mode = kMode_MR1;
@@ skipping 18 matching lines @@
     }
     InstructionOperand temps[] = {g.TempRegister(), g.TempRegister()};
     size_t const temp_count = arraysize(temps);
     InstructionCode code = kArchStoreWithWriteBarrier;
     code |= AddressingModeField::encode(addressing_mode);
     code |= MiscField::encode(static_cast<int>(record_write_mode));
     Emit(code, 0, nullptr, input_count, inputs, temp_count, temps);
   } else {
     ArchOpcode opcode;
     switch (rep) {
-      case kRepFloat32:
+      case MachineRepresentation::kFloat32:
         opcode = kX64Movss;
         break;
-      case kRepFloat64:
+      case MachineRepresentation::kFloat64:
         opcode = kX64Movsd;
         break;
-      case kRepBit:  // Fall through.
-      case kRepWord8:
+      case MachineRepresentation::kBit:  // Fall through.
+      case MachineRepresentation::kWord8:
         opcode = kX64Movb;
         break;
-      case kRepWord16:
+      case MachineRepresentation::kWord16:
         opcode = kX64Movw;
         break;
-      case kRepWord32:
+      case MachineRepresentation::kWord32:
         opcode = kX64Movl;
         break;
-      case kRepTagged:  // Fall through.
-      case kRepWord64:
+      case MachineRepresentation::kTagged:  // Fall through.
+      case MachineRepresentation::kWord64:
         opcode = kX64Movq;
         break;
       default:
         UNREACHABLE();
         return;
     }
     InstructionOperand inputs[4];
     size_t input_count = 0;
     AddressingMode addressing_mode =
         g.GetEffectiveAddressMemoryOperand(node, inputs, &input_count);
     InstructionCode code =
         opcode | AddressingModeField::encode(addressing_mode);
     InstructionOperand value_operand =
         g.CanBeImmediate(value) ? g.UseImmediate(value) : g.UseRegister(value);
     inputs[input_count++] = value_operand;
     Emit(code, 0, static_cast<InstructionOperand*>(NULL), input_count, inputs);
   }
 }
 
 
 void InstructionSelector::VisitCheckedLoad(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
-  MachineType typ = TypeOf(OpParameter<MachineType>(node));
+  CheckedLoadRepresentation load_rep = CheckedLoadRepresentationOf(node->op());
   X64OperandGenerator g(this);
   Node* const buffer = node->InputAt(0);
   Node* const offset = node->InputAt(1);
   Node* const length = node->InputAt(2);
   ArchOpcode opcode;
-  switch (rep) {
-    case kRepWord8:
-      opcode = typ == kTypeInt32 ? kCheckedLoadInt8 : kCheckedLoadUint8;
+  switch (load_rep.representation()) {
+    case MachineRepresentation::kWord8:
+      opcode = load_rep.IsSigned() ? kCheckedLoadInt8 : kCheckedLoadUint8;
       break;
-    case kRepWord16:
-      opcode = typ == kTypeInt32 ? kCheckedLoadInt16 : kCheckedLoadUint16;
+    case MachineRepresentation::kWord16:
+      opcode = load_rep.IsSigned() ? kCheckedLoadInt16 : kCheckedLoadUint16;
       break;
-    case kRepWord32:
+    case MachineRepresentation::kWord32:
       opcode = kCheckedLoadWord32;
       break;
-    case kRepWord64:
+    case MachineRepresentation::kWord64:
       opcode = kCheckedLoadWord64;
       break;
-    case kRepFloat32:
+    case MachineRepresentation::kFloat32:
       opcode = kCheckedLoadFloat32;
       break;
-    case kRepFloat64:
+    case MachineRepresentation::kFloat64:
       opcode = kCheckedLoadFloat64;
       break;
     default:
       UNREACHABLE();
       return;
   }
   if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) {
     Int32Matcher mlength(length);
     Int32BinopMatcher moffset(offset);
     if (mlength.HasValue() && moffset.right().HasValue() &&
         moffset.right().Value() >= 0 &&
         mlength.Value() >= moffset.right().Value()) {
       Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer),
            g.UseRegister(moffset.left().node()),
            g.UseImmediate(moffset.right().node()), g.UseImmediate(length));
       return;
     }
   }
   InstructionOperand length_operand =
       g.CanBeImmediate(length) ? g.UseImmediate(length) : g.UseRegister(length);
   Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer),
        g.UseRegister(offset), g.TempImmediate(0), length_operand);
 }
 
 
 void InstructionSelector::VisitCheckedStore(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
+  MachineRepresentation rep =
+      CheckedStoreRepresentationOf(node->op()).representation();
   X64OperandGenerator g(this);
   Node* const buffer = node->InputAt(0);
   Node* const offset = node->InputAt(1);
   Node* const length = node->InputAt(2);
   Node* const value = node->InputAt(3);
   ArchOpcode opcode;
   switch (rep) {
-    case kRepWord8:
+    case MachineRepresentation::kWord8:
       opcode = kCheckedStoreWord8;
       break;
-    case kRepWord16:
+    case MachineRepresentation::kWord16:
       opcode = kCheckedStoreWord16;
       break;
-    case kRepWord32:
+    case MachineRepresentation::kWord32:
       opcode = kCheckedStoreWord32;
       break;
-    case kRepWord64:
+    case MachineRepresentation::kWord64:
       opcode = kCheckedStoreWord64;
       break;
-    case kRepFloat32:
+    case MachineRepresentation::kFloat32:
       opcode = kCheckedStoreFloat32;
       break;
-    case kRepFloat64:
+    case MachineRepresentation::kFloat64:
       opcode = kCheckedStoreFloat64;
       break;
     default:
       UNREACHABLE();
       return;
   }
   InstructionOperand value_operand =
       g.CanBeImmediate(value) ? g.UseImmediate(value) : g.UseRegister(value);
   if (offset->opcode() == IrOpcode::kInt32Add && CanCover(node, offset)) {
     Int32Matcher mlength(length);
@@ skipping 1435 matching lines @@
              MachineOperatorBuilder::kFloat64RoundTruncate |
              MachineOperatorBuilder::kFloat32RoundTiesEven |
              MachineOperatorBuilder::kFloat64RoundTiesEven;
   }
   return flags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8