[loong64][mips] Introduce CagedPointer

Port commit afd15549

Since V8 heap sandbox requires pointer compression, which is not
implemented on mips64 and loong64 ports, so I just fix the build
issue in this CL.

Change-Id: Ie8f9d070c6149d85c2c870e882199ede2ebfe317
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3255207
Auto-Submit: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Liu yu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#77633}

src/compiler/backend/loong64/instruction-selector-loong64.cc

@@ -467,6 +467,7 @@ void InstructionSelector::VisitLoad(Node* node) {
       break;
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
     case MachineRepresentation::kSimd128:
@@ -545,6 +546,7 @@ void InstructionSelector::VisitStore(Node* node) {
         break;
       case MachineRepresentation::kCompressedPointer:  // Fall through.
       case MachineRepresentation::kCompressed:         // Fall through.
+      case MachineRepresentation::kCagedPointer:       // Fall through.
       case MachineRepresentation::kMapWord:            // Fall through.
       case MachineRepresentation::kNone:
       case MachineRepresentation::kSimd128:

src/compiler/backend/mips/instruction-selector-mips.cc

@@ -370,6 +370,7 @@ void InstructionSelector::VisitLoad(Node* node) {
       break;
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kWord64:             // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
@@ -450,6 +451,7 @@ void InstructionSelector::VisitStore(Node* node) {
         break;
       case MachineRepresentation::kCompressedPointer:  // Fall through.
       case MachineRepresentation::kCompressed:         // Fall through.
+      case MachineRepresentation::kCagedPointer:       // Fall through.
       case MachineRepresentation::kWord64:             // Fall through.
       case MachineRepresentation::kMapWord:            // Fall through.
       case MachineRepresentation::kNone:
@@ -1426,6 +1428,7 @@ void InstructionSelector::VisitUnalignedLoad(Node* node) {
     case MachineRepresentation::kBit:                // Fall through.
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kWord64:             // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
@@ -1480,6 +1483,7 @@ void InstructionSelector::VisitUnalignedStore(Node* node) {
     case MachineRepresentation::kBit:                // Fall through.
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kWord64:             // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:

src/compiler/backend/mips64/instruction-selector-mips64.cc

@@ -503,6 +503,7 @@ void InstructionSelector::VisitLoad(Node* node) {
       opcode = kMips64MsaLd;
       break;
     case MachineRepresentation::kCompressedPointer:  // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
@@ -576,6 +577,7 @@ void InstructionSelector::VisitStore(Node* node) {
         break;
       case MachineRepresentation::kCompressedPointer:  // Fall through.
       case MachineRepresentation::kCompressed:         // Fall through.
+      case MachineRepresentation::kCagedPointer:       // Fall through.
       case MachineRepresentation::kMapWord:            // Fall through.
       case MachineRepresentation::kNone:
         UNREACHABLE();
@@ -1861,6 +1863,7 @@ void InstructionSelector::VisitUnalignedLoad(Node* node) {
     case MachineRepresentation::kBit:                // Fall through.
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();
@@ -1915,6 +1918,7 @@ void InstructionSelector::VisitUnalignedStore(Node* node) {
     case MachineRepresentation::kBit:                // Fall through.
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
+    case MachineRepresentation::kCagedPointer:       // Fall through.
     case MachineRepresentation::kMapWord:            // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();