[compiler] Sanitize entry points to LookupSlot access.

src/compiler/js-operator.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/js-operator.h"
 
 #include <limits>
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
@@ skipping 181 matching lines @@
 }
 
 
 ContextAccess const& ContextAccessOf(Operator const* op) {
   DCHECK(op->opcode() == IrOpcode::kJSLoadContext ||
          op->opcode() == IrOpcode::kJSStoreContext);
   return OpParameter<ContextAccess>(op);
 }
 
 
-DynamicAccess::DynamicAccess(const Handle<String>& name, TypeofMode typeof_mode)
-    : name_(name), typeof_mode_(typeof_mode) {}
-
-
-bool operator==(DynamicAccess const& lhs, DynamicAccess const& rhs) {
-  UNIMPLEMENTED();
-  return true;
-}
-
-
-bool operator!=(DynamicAccess const& lhs, DynamicAccess const& rhs) {
-  return !(lhs == rhs);
-}
-
-
-size_t hash_value(DynamicAccess const& access) {
-  UNIMPLEMENTED();
-  return 0;
-}
-
-
-std::ostream& operator<<(std::ostream& os, DynamicAccess const& access) {
-  return os << Brief(*access.name()) << ", " << access.typeof_mode();
-}
-
-
-DynamicAccess const& DynamicAccessOf(Operator const* op) {
-  DCHECK_EQ(IrOpcode::kJSLoadDynamic, op->opcode());
-  return OpParameter<DynamicAccess>(op);
-}
-
-
 bool operator==(NamedAccess const& lhs, NamedAccess const& rhs) {
   return lhs.name().location() == rhs.name().location() &&
          lhs.language_mode() == rhs.language_mode() &&
          lhs.feedback() == rhs.feedback();
 }
 
 
 bool operator!=(NamedAccess const& lhs, NamedAccess const& rhs) {
   return !(lhs == rhs);
 }
@@ skipping 603 matching lines @@
   ContextAccess access(depth, index, false);
   return new (zone()) Operator1<ContextAccess>(  // --
       IrOpcode::kJSStoreContext,                 // opcode
       Operator::kNoRead | Operator::kNoThrow,    // flags
       "JSStoreContext",                          // name
       2, 1, 1, 0, 1, 0,                          // counts
       access);                                   // parameter
 }
 
 
-const Operator* JSOperatorBuilder::LoadDynamic(const Handle<String>& name,
-                                               TypeofMode typeof_mode) {
-  DynamicAccess access(name, typeof_mode);
-  return new (zone()) Operator1<DynamicAccess>(           // --
-      IrOpcode::kJSLoadDynamic, Operator::kNoProperties,  // opcode
-      "JSLoadDynamic",                                    // name
-      2, 1, 1, 1, 1, 2,                                   // counts
-      access);                                            // parameter
-}
-
-
 const Operator* JSOperatorBuilder::CreateArguments(CreateArgumentsType type) {
   return new (zone()) Operator1<CreateArgumentsType>(    // --
       IrOpcode::kJSCreateArguments, Operator::kNoThrow,  // opcode
       "JSCreateArguments",                               // name
       1, 1, 1, 1, 1, 0,                                  // counts
       type);                                             // parameter
 }
 
 
 const Operator* JSOperatorBuilder::CreateArray(size_t arity,
@@ skipping 92 matching lines @@
   return new (zone()) Operator1<Handle<ScopeInfo>>(               // --
       IrOpcode::kJSCreateScriptContext, Operator::kNoProperties,  // opcode
       "JSCreateScriptContext",                                    // name
       1, 1, 1, 1, 1, 2,                                           // counts
       scpope_info);                                               // parameter
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8