[es6] Correct parsing of regular expression literal flags.

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.
 
 // TODO(rmcilroy): Remove this define after this flag is turned on globally
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
@@ skipping 2835 matching lines @@
 
 
 TEST(RegExpLiterals) {
   InitializedHandleScope handle_scope;
   BytecodeGeneratorHelper helper;
   Zone zone;
 
   FeedbackVectorSpec feedback_spec(&zone);
   FeedbackVectorSlot slot1 = feedback_spec.AddCallICSlot();
   FeedbackVectorSlot slot2 = feedback_spec.AddLoadICSlot();
+  uint8_t i_flags = JSRegExp::kIgnoreCase;
 
   Handle<i::TypeFeedbackVector> vector =
       i::NewTypeFeedbackVector(helper.isolate(), &feedback_spec);
 
   ExpectedSnippet<const char*> snippets[] = {
       {"return /ab+d/;",
-       1 * kPointerSize,
+       0 * kPointerSize,
        1,
-       10,
+       6,
        {
-           B(LdaConstant), U8(0),                //
-           B(Star), R(0),                        //
-           B(LdaConstant), U8(1),                //
-           B(CreateRegExpLiteral), U8(0), R(0),  //
-           B(Return),                            //
+           B(LdaConstant), U8(0),                 //
+           B(CreateRegExpLiteral), U8(0), U8(0),  //
+           B(Return),                             //
        },
-       2,
-       {"", "ab+d"}},
+       1,
+       {"ab+d"}},
       {"return /(\\w+)\\s(\\w+)/i;",
-       1 * kPointerSize,
+       0 * kPointerSize,
        1,
-       10,
+       6,
        {
-           B(LdaConstant), U8(0),                //
-           B(Star), R(0),                        //
-           B(LdaConstant), U8(1),                //
-           B(CreateRegExpLiteral), U8(0), R(0),  //
-           B(Return),                            //
+           B(LdaConstant), U8(0),                       //
+           B(CreateRegExpLiteral), U8(0), U8(i_flags),  //
+           B(Return),                                   //
        },
-       2,
-       {"i", "(\\w+)\\s(\\w+)"}},
+       1,
+       {"(\\w+)\\s(\\w+)"}},
       {"return /ab+d/.exec('abdd');",
        3 * kPointerSize,
        1,
-       27,
+       23,
        {
            B(LdaConstant), U8(0),                                      //
-           B(Star), R(2),                                              //
-           B(LdaConstant), U8(1),                                      //
-           B(CreateRegExpLiteral), U8(0), R(2),                        //
+           B(CreateRegExpLiteral), U8(0), U8(0),                       //
            B(Star), R(1),                                              //
-           B(LoadICSloppy), R(1), U8(2), U8(vector->GetIndex(slot2)),  //
+           B(LoadICSloppy), R(1), U8(1), U8(vector->GetIndex(slot2)),  //
            B(Star), R(0),                                              //
-           B(LdaConstant), U8(3),                                      //
+           B(LdaConstant), U8(2),                                      //
            B(Star), R(2),                                              //
            B(Call), R(0), R(1), U8(1), U8(vector->GetIndex(slot1)),    //
            B(Return),                                                  //
        },
-       4,
-       {"", "ab+d", "exec", "abdd"}},
+       3,
+       {"ab+d", "exec", "abdd"}},
   };
 
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecodeForFunctionBody(snippets[i].code_snippet);
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 
@@ skipping 2567 matching lines @@
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecodeForFunctionBody(snippets[i].code_snippet);
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8