[Interpreter] Avoid dereferencing handles on BytecodeGenerator for AST operations.

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 23941 matching lines @@
   // handles so that they are only added to the constant pool array once.
   const char* chunks[] = {"var a = {};",
                           "var b = {};",
                           "var c = 'testing';",
                           "var d = 'testing';",
                           "13;",
                           NULL};
   RunStreamingTest(chunks);
 }
 
+TEST(StreamingScriptEvalShadowing) {
+  // When run with Ignition, tests that the streaming parser canonicalizes
+  // handles so the Variable::is_possibly_eval() is correct.
+  const char* chunk1 =
+      "(function() {\n"
+      "  var y = 2;\n"
+      "  return (function() {\n"
+      "    eval('var y = 13;');\n"
+      "    function g() {\n"
+      "      return y\n"
+      "    }\n"
+      "    return g();\n"
+      "  })()\n"
+      "})()\n";
+  const char* chunks[] = {chunk1, NULL};
+  RunStreamingTest(chunks);
+}
+
 TEST(StreamingBiggerScript) {
   const char* chunk1 =
       "function foo() {\n"
       "  // Make this chunk sufficiently long so that it will overflow the\n"
       "  // backing buffer of the Scanner.\n"
       "  var i = 0;\n"
       "  var result = 0;\n"
       "  for (i = 0; i < 13; ++i) { result = result + 1; }\n"
       "  result = 0;\n"
       "  for (i = 0; i < 13; ++i) { result = result + 1; }\n"
@@ skipping 1534 matching lines @@
 
   // Put the function into context1 and call it. Since the access check
   // callback always returns true, the call succeeds even though the tokens
   // are different.
   context1->Enter();
   context1->Global()->Set(context1, v8_str("fun"), fun).FromJust();
   v8::Local<v8::Value> x_value = CompileRun("fun('x')");
   CHECK_EQ(42, x_value->Int32Value(context1).FromJust());
   context1->Exit();
 }