[turbofan] Desugar lookup slot optimization in graph builder.

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 128 matching lines @@
 }
 
 
 ContextAccess const& ContextAccessOf(Operator const* op) {
   DCHECK(op->opcode() == IrOpcode::kJSLoadContext ||
          op->opcode() == IrOpcode::kJSStoreContext);
   return OpParameter<ContextAccess>(op);
 }
 
 
-DynamicGlobalAccess::DynamicGlobalAccess(const Handle<String>& name,
-                                         uint32_t check_bitset,
-                                         const VectorSlotPair& feedback,
-                                         TypeofMode typeof_mode)
-    : name_(name),
-      check_bitset_(check_bitset),
-      feedback_(feedback),
-      typeof_mode_(typeof_mode) {
-  DCHECK(check_bitset == kFullCheckRequired || check_bitset < 0x80000000U);
-}
+DynamicAccess::DynamicAccess(const Handle<String>& name, TypeofMode typeof_mode)
+    : name_(name), typeof_mode_(typeof_mode) {}
 
 
-bool operator==(DynamicGlobalAccess const& lhs,
-                DynamicGlobalAccess const& rhs) {
+bool operator==(DynamicAccess const& lhs, DynamicAccess const& rhs) {
   UNIMPLEMENTED();
   return true;
 }
 
 
-bool operator!=(DynamicGlobalAccess const& lhs,
-                DynamicGlobalAccess const& rhs) {
+bool operator!=(DynamicAccess const& lhs, DynamicAccess const& rhs) {
   return !(lhs == rhs);
 }
 
 
-size_t hash_value(DynamicGlobalAccess const& access) {
+size_t hash_value(DynamicAccess const& access) {
   UNIMPLEMENTED();
   return 0;
 }
 
 
-std::ostream& operator<<(std::ostream& os, DynamicGlobalAccess const& access) {
-  return os << Brief(*access.name()) << ", " << access.check_bitset() << ", "
-            << access.typeof_mode();
+std::ostream& operator<<(std::ostream& os, DynamicAccess const& access) {
+  return os << Brief(*access.name()) << ", " << access.typeof_mode();
 }
 
 
-DynamicGlobalAccess const& DynamicGlobalAccessOf(Operator const* op) {
-  DCHECK_EQ(IrOpcode::kJSLoadDynamicGlobal, op->opcode());
-  return OpParameter<DynamicGlobalAccess>(op);
+DynamicAccess const& DynamicAccessOf(Operator const* op) {
+  DCHECK_EQ(IrOpcode::kJSLoadDynamic, op->opcode());
+  return OpParameter<DynamicAccess>(op);
 }
 
 
-DynamicContextAccess::DynamicContextAccess(const Handle<String>& name,
-                                           uint32_t check_bitset,
-                                           const ContextAccess& context_access)
-    : name_(name),
-      check_bitset_(check_bitset),
-      context_access_(context_access) {
-  DCHECK(check_bitset == kFullCheckRequired || check_bitset < 0x80000000U);
-}
-
-
-bool operator==(DynamicContextAccess const& lhs,
-                DynamicContextAccess const& rhs) {
-  UNIMPLEMENTED();
-  return true;
-}
-
-
-bool operator!=(DynamicContextAccess const& lhs,
-                DynamicContextAccess const& rhs) {
-  return !(lhs == rhs);
-}
-
-
-size_t hash_value(DynamicContextAccess const& access) {
-  UNIMPLEMENTED();
-  return 0;
-}
-
-
-std::ostream& operator<<(std::ostream& os, DynamicContextAccess const& access) {
-  return os << Brief(*access.name()) << ", " << access.check_bitset() << ", "
-            << access.context_access();
-}
-
-
-DynamicContextAccess const& DynamicContextAccessOf(Operator const* op) {
-  DCHECK_EQ(IrOpcode::kJSLoadDynamicContext, op->opcode());
-  return OpParameter<DynamicContextAccess>(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 419 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::LoadDynamicGlobal(
-    const Handle<String>& name, uint32_t check_bitset,
-    const VectorSlotPair& feedback, TypeofMode typeof_mode) {
-  DynamicGlobalAccess access(name, check_bitset, feedback, typeof_mode);
-  return new (zone()) Operator1<DynamicGlobalAccess>(           // --
-      IrOpcode::kJSLoadDynamicGlobal, Operator::kNoProperties,  // opcode
-      "JSLoadDynamicGlobal",                                    // name
-      2, 1, 1, 1, 1, 2,                                         // 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::LoadDynamicContext(
-    const Handle<String>& name, uint32_t check_bitset, size_t depth,
-    size_t index) {
-  ContextAccess context_access(depth, index, false);
-  DynamicContextAccess access(name, check_bitset, context_access);
-  return new (zone()) Operator1<DynamicContextAccess>(           // --
-      IrOpcode::kJSLoadDynamicContext, Operator::kNoProperties,  // opcode
-      "JSLoadDynamicContext",                                    // name
-      1, 1, 1, 1, 1, 2,                                          // counts
-      access);                                                   // parameter
-}
-
-
 const Operator* JSOperatorBuilder::CreateArguments(
     CreateArgumentsParameters::Type type, int start_index) {
   DCHECK_IMPLIES(start_index, type == CreateArgumentsParameters::kRestArray);
   CreateArgumentsParameters parameters(type, start_index);
   return new (zone()) Operator1<CreateArgumentsParameters>(  // --
       IrOpcode::kJSCreateArguments, Operator::kNoThrow,      // opcode
       "JSCreateArguments",                                   // name
       1, 1, 1, 1, 1, 0,                                      // counts
       parameters);                                           // parameter
 }
@@ skipping 65 matching lines @@
                                 Handle<ScopeInfo>::hash>(         // --
       IrOpcode::kJSCreateScriptContext, Operator::kNoProperties,  // opcode
       "JSCreateScriptContext",                                    // name
       1, 1, 1, 1, 1, 2,                                           // counts
       scpope_info);                                               // parameter
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8