TurboFan: Introduce TaggedSigned and TaggedPointer representations.

src/compiler/x64/instruction-selector-x64.cc

Index: src/compiler/x64/instruction-selector-x64.cc
diff --git a/src/compiler/x64/instruction-selector-x64.cc b/src/compiler/x64/instruction-selector-x64.cc
index d2b66a5fbcc6325a24c682fd4bbfd8cde959c614..5f1015131a63215869805b569d143dcbeeb92d99 100644
--- a/src/compiler/x64/instruction-selector-x64.cc
+++ b/src/compiler/x64/instruction-selector-x64.cc
@@ -169,6 +169,8 @@ void InstructionSelector::VisitLoad(Node* node) {
     case MachineRepresentation::kWord32:
       opcode = kX64Movl;
       break;
+    case MachineRepresentation::kTaggedSigned:   // Fall through.
+    case MachineRepresentation::kTaggedPointer:  // Fall through.
     case MachineRepresentation::kTagged:  // Fall through.
     case MachineRepresentation::kWord64:
       opcode = kX64Movq;
@@ -254,6 +256,8 @@ void InstructionSelector::VisitStore(Node* node) {
       case MachineRepresentation::kWord32:
         opcode = kX64Movl;
         break;
+      case MachineRepresentation::kTaggedSigned:   // Fall through.
+      case MachineRepresentation::kTaggedPointer:  // Fall through.
       case MachineRepresentation::kTagged:  // Fall through.
       case MachineRepresentation::kWord64:
         opcode = kX64Movq;
@@ -311,6 +315,8 @@ void InstructionSelector::VisitCheckedLoad(Node* node) {
       break;
     case MachineRepresentation::kBit:      // Fall through.
     case MachineRepresentation::kSimd128:  // Fall through.
+    case MachineRepresentation::kTaggedSigned:   // Fall through.
+    case MachineRepresentation::kTaggedPointer:  // Fall through.
     case MachineRepresentation::kTagged:   // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();
@@ -364,6 +370,8 @@ void InstructionSelector::VisitCheckedStore(Node* node) {
       break;
     case MachineRepresentation::kBit:      // Fall through.
     case MachineRepresentation::kSimd128:  // Fall through.
+    case MachineRepresentation::kTaggedSigned:   // Fall through.
+    case MachineRepresentation::kTaggedPointer:  // Fall through.
     case MachineRepresentation::kTagged:   // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();