[Interpreter] Adds support for wide variant of load/store lookup slots.

test/cctest/interpreter/test-bytecode-generator.cc

 // Copyright 2015 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/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-generator.h"
 #include "src/interpreter/interpreter.h"
@@ skipping 5820 matching lines @@
                          std::string(function_epilogue);
     // TODO(mythria): use * as filter when function declarations are supported
     // inside eval.
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecode(script.c_str(), "t", "f");
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 
+TEST(LookupSlotWideInEval) {
+  InitializedHandleScope handle_scope;
+  BytecodeGeneratorHelper helper;
+
+  const char* function_prologue =
+      "var f;"
+      "var x = 1;"
+      "function f1() {"
+      "  eval(\"function t() {";
+  const char* function_epilogue =
+      "        }; f = t; f();\");"
+      "}"
+      "f1();";
+
+  int const_count[] = {0, 0, 0, 0};
+  ExpectedSnippet<InstanceType, 257> snippets[] = {
+      {REPEAT_256(SPACE, "var y = 2.3;")
+       "return x;",
+       1 * kPointerSize,
+       1,
+       1028,
+       {
+           REPEAT_256(SPACE,                         //
+             B(LdaConstant), U8(const_count[0]++),   //
+             B(Star), R(0), )                        //
+           B(LdaLookupSlotWide), U16(256),           //
+           B(Return)                                 //
+       },
+       257,
+       {REPEAT_256(COMMA, InstanceType::HEAP_NUMBER_TYPE),
+        InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE}},
+      {REPEAT_256(SPACE, "var y = 2.3;")
+       "return typeof x;",
+       1 * kPointerSize,
+       1,
+       1029,
+       {
+           REPEAT_256(SPACE,                            //
+             B(LdaConstant), U8(const_count[1]++),      //
+             B(Star), R(0), )                           //
+           B(LdaLookupSlotInsideTypeofWide), U16(256),  //
+           B(TypeOf),                                   //
+           B(Return)                                    //
+       },
+       257,
+       {REPEAT_256(COMMA, InstanceType::HEAP_NUMBER_TYPE),
+        InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE}},
+      {REPEAT_256(SPACE, "var y = 2.3;")
+       "x = 10;",
+       1 * kPointerSize,
+       1,
+       1031,
+       {
+           REPEAT_256(SPACE,                        //
+             B(LdaConstant), U8(const_count[2]++),  //
+             B(Star), R(0), )                       //
+           B(LdaSmi8), U8(10),                      //
+           B(StaLookupSlotSloppyWide), U16(256),    //
+           B(LdaUndefined),                         //
+           B(Return)                                //
+       },
+       257,
+       {REPEAT_256(COMMA, InstanceType::HEAP_NUMBER_TYPE),
+        InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE}},
+      {"'use strict';"
+       REPEAT_256(SPACE, "var y = 2.3;")
+       "x = 10;",
+       1 * kPointerSize,
+       1,
+       1031,
+       {
+           REPEAT_256(SPACE,
+             B(LdaConstant), U8(const_count[3]++),  //
+             B(Star), R(0), )                       //
+           B(LdaSmi8), U8(10),                      //
+           B(StaLookupSlotStrictWide), U16(256),    //
+           B(LdaUndefined),                         //
+           B(Return)                                //
+       },
+       257,
+       {REPEAT_256(COMMA, InstanceType::HEAP_NUMBER_TYPE),
+        InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE}},
+  };
+
+  for (size_t i = 0; i < arraysize(snippets); i++) {
+    std::string script = std::string(function_prologue) +
+                         std::string(snippets[i].code_snippet) +
+                         std::string(function_epilogue);
+    // TODO(mythria): use * as filter when function declarations are supported
+    // inside eval.
+    Handle<BytecodeArray> bytecode_array =
+        helper.MakeBytecode(script.c_str(), "t", "f");
+    CheckBytecodeArrayEqual(snippets[i], bytecode_array);
+  }
+}
+
+
 TEST(DeleteLookupSlot) {
   InitializedHandleScope handle_scope;
   BytecodeGeneratorHelper helper;
 
   const char* function_prologue = "var f;"
                                   "var x = 1;"
                                   "z = 10;"
                                   "function f1() {"
                                   "  var y;"
                                   "  eval(\"function t() {";
@@ skipping 42 matching lines @@
                          std::string(function_epilogue);
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecode(script.c_str(), "t", "f");
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8