[turbofan] Make MachineType a pair of enums.

src/compiler/arm64/instruction-selector-arm64.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-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 320 matching lines @@
       return WhichPowerOf2_64(value_minus_one);
     }
   }
   return 0;
 }
 
 }  // namespace
 
 
 void InstructionSelector::VisitLoad(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<LoadRepresentation>(node));
-  MachineType typ = TypeOf(OpParameter<LoadRepresentation>(node));
+  LoadRepresentation load_rep = LoadRepresentationOf(node->op());
   Arm64OperandGenerator g(this);
   Node* base = node->InputAt(0);
   Node* index = node->InputAt(1);
   ArchOpcode opcode;
   ImmediateMode immediate_mode = kNoImmediate;
-  switch (rep) {
-    case kRepFloat32:
+  switch (load_rep.representation()) {
+    case MachineRepresentation::kFloat32:
       opcode = kArm64LdrS;
       immediate_mode = kLoadStoreImm32;
       break;
-    case kRepFloat64:
+    case MachineRepresentation::kFloat64:
       opcode = kArm64LdrD;
       immediate_mode = kLoadStoreImm64;
       break;
-    case kRepBit:  // Fall through.
-    case kRepWord8:
-      opcode = typ == kTypeInt32 ? kArm64Ldrsb : kArm64Ldrb;
+    case MachineRepresentation::kBit:  // Fall through.
+    case MachineRepresentation::kWord8:
+      opcode = load_rep.IsSigned() ? kArm64Ldrsb : kArm64Ldrb;
       immediate_mode = kLoadStoreImm8;
       break;
-    case kRepWord16:
-      opcode = typ == kTypeInt32 ? kArm64Ldrsh : kArm64Ldrh;
+    case MachineRepresentation::kWord16:
+      opcode = load_rep.IsSigned() ? kArm64Ldrsh : kArm64Ldrh;
       immediate_mode = kLoadStoreImm16;
       break;
-    case kRepWord32:
+    case MachineRepresentation::kWord32:
       opcode = kArm64LdrW;
       immediate_mode = kLoadStoreImm32;
       break;
-    case kRepTagged:  // Fall through.
-    case kRepWord64:
+    case MachineRepresentation::kTagged:  // Fall through.
+    case MachineRepresentation::kWord64:
       opcode = kArm64Ldr;
       immediate_mode = kLoadStoreImm64;
       break;
     default:
       UNREACHABLE();
       return;
   }
   if (g.CanBeImmediate(index, immediate_mode)) {
     Emit(opcode | AddressingModeField::encode(kMode_MRI),
          g.DefineAsRegister(node), g.UseRegister(base), g.UseImmediate(index));
   } else {
     Emit(opcode | AddressingModeField::encode(kMode_MRR),
          g.DefineAsRegister(node), g.UseRegister(base), g.UseRegister(index));
   }
 }
 
 
 void InstructionSelector::VisitStore(Node* node) {
   Arm64OperandGenerator 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();
 
   // TODO(arm64): I guess this could be done in a better way.
   if (write_barrier_kind != kNoWriteBarrier) {
-    DCHECK_EQ(kRepTagged, rep);
+    DCHECK_EQ(MachineRepresentation::kTagged, rep);
     InstructionOperand inputs[3];
     size_t input_count = 0;
     inputs[input_count++] = g.UseUniqueRegister(base);
     inputs[input_count++] = g.UseUniqueRegister(index);
     inputs[input_count++] = (write_barrier_kind == kMapWriteBarrier)
                                 ? g.UseRegister(value)
                                 : g.UseUniqueRegister(value);
     RecordWriteMode record_write_mode = RecordWriteMode::kValueIsAny;
     switch (write_barrier_kind) {
       case kNoWriteBarrier:
@@ skipping 11 matching lines @@
     }
     InstructionOperand temps[] = {g.TempRegister(), g.TempRegister()};
     size_t const temp_count = arraysize(temps);
     InstructionCode code = kArchStoreWithWriteBarrier;
     code |= MiscField::encode(static_cast<int>(record_write_mode));
     Emit(code, 0, nullptr, input_count, inputs, temp_count, temps);
   } else {
     ArchOpcode opcode;
     ImmediateMode immediate_mode = kNoImmediate;
     switch (rep) {
-      case kRepFloat32:
+      case MachineRepresentation::kFloat32:
         opcode = kArm64StrS;
         immediate_mode = kLoadStoreImm32;
         break;
-      case kRepFloat64:
+      case MachineRepresentation::kFloat64:
         opcode = kArm64StrD;
         immediate_mode = kLoadStoreImm64;
         break;
-      case kRepBit:  // Fall through.
-      case kRepWord8:
+      case MachineRepresentation::kBit:  // Fall through.
+      case MachineRepresentation::kWord8:
         opcode = kArm64Strb;
         immediate_mode = kLoadStoreImm8;
         break;
-      case kRepWord16:
+      case MachineRepresentation::kWord16:
         opcode = kArm64Strh;
         immediate_mode = kLoadStoreImm16;
         break;
-      case kRepWord32:
+      case MachineRepresentation::kWord32:
         opcode = kArm64StrW;
         immediate_mode = kLoadStoreImm32;
         break;
-      case kRepTagged:  // Fall through.
-      case kRepWord64:
+      case MachineRepresentation::kTagged:  // Fall through.
+      case MachineRepresentation::kWord64:
         opcode = kArm64Str;
         immediate_mode = kLoadStoreImm64;
         break;
       default:
         UNREACHABLE();
         return;
     }
     if (g.CanBeImmediate(index, immediate_mode)) {
       Emit(opcode | AddressingModeField::encode(kMode_MRI), g.NoOutput(),
            g.UseRegister(base), g.UseImmediate(index), g.UseRegister(value));
     } else {
       Emit(opcode | AddressingModeField::encode(kMode_MRR), g.NoOutput(),
            g.UseRegister(base), g.UseRegister(index), g.UseRegister(value));
     }
   }
 }
 
 
 void InstructionSelector::VisitCheckedLoad(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
-  MachineType typ = TypeOf(OpParameter<MachineType>(node));
+  CheckedLoadRepresentation load_rep = CheckedLoadRepresentationOf(node->op());
   Arm64OperandGenerator 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;
   }
   Emit(opcode, g.DefineAsRegister(node), g.UseRegister(buffer),
        g.UseRegister(offset), g.UseOperand(length, kArithmeticImm));
 }
 
 
 void InstructionSelector::VisitCheckedStore(Node* node) {
-  MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
+  MachineRepresentation rep =
+      CheckedStoreRepresentationOf(node->op()).representation();
   Arm64OperandGenerator 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;
   }
   Emit(opcode, g.NoOutput(), g.UseRegister(buffer), g.UseRegister(offset),
        g.UseOperand(length, kArithmeticImm), g.UseRegister(value));
 }
 
@@ skipping 1601 matching lines @@
          MachineOperatorBuilder::kFloat32RoundTiesEven |
          MachineOperatorBuilder::kFloat64RoundTiesEven |
          MachineOperatorBuilder::kWord32ShiftIsSafe |
          MachineOperatorBuilder::kInt32DivIsSafe |
          MachineOperatorBuilder::kUint32DivIsSafe;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8