Move object literal checking into checker classes

src/arm64/full-codegen-arm64.cc

Index: src/arm64/full-codegen-arm64.cc
diff --git a/src/arm64/full-codegen-arm64.cc b/src/arm64/full-codegen-arm64.cc
index 72bd507c9aa5cc739e59e7abdafd8b8083fea30b..bce41472759630551db941ed91a8eb1f443a2c16 100644
--- a/src/arm64/full-codegen-arm64.cc
+++ b/src/arm64/full-codegen-arm64.cc
@@ -1725,15 +1725,12 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
         }
         break;
       case ObjectLiteral::Property::PROTOTYPE:
-        if (property->emit_store()) {
-          // Duplicate receiver on stack.
-          __ Peek(x0, 0);
-          __ Push(x0);
-          VisitForStackValue(value);
-          __ CallRuntime(Runtime::kInternalSetPrototype, 2);
-        } else {
-          VisitForEffect(value);
-        }
+        DCHECK(property->emit_store());
+        // Duplicate receiver on stack.
+        __ Peek(x0, 0);
+        __ Push(x0);
+        VisitForStackValue(value);
+        __ CallRuntime(Runtime::kInternalSetPrototype, 2);
         break;
       case ObjectLiteral::Property::GETTER:
         accessor_table.lookup(key)->second->getter = value;
@@ -1785,11 +1782,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
     if (property->kind() == ObjectLiteral::Property::PROTOTYPE) {
       DCHECK(!property->is_computed_name());
       VisitForStackValue(value);
-      if (property->emit_store()) {
-        __ CallRuntime(Runtime::kInternalSetPrototype, 2);
-      } else {
-        __ Drop(2);
-      }
+      DCHECK(property->emit_store());
+      __ CallRuntime(Runtime::kInternalSetPrototype, 2);
     } else {
       EmitPropertyKey(property);
       VisitForStackValue(value);
@@ -2253,8 +2247,9 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
-      case ObjectLiteral::Property::COMPUTED:
       case ObjectLiteral::Property::PROTOTYPE:
+        UNREACHABLE();
+      case ObjectLiteral::Property::COMPUTED:
         __ CallRuntime(Runtime::kDefineClassMethod, 3);
         break;