[refactor] Separate generated builtins and C++ builtins into separate files

src/builtins/builtins-regexp.h

-// Copyright 2017 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.
-
-#ifndef V8_BUILTINS_BUILTINS_REGEXP_H_
-#define V8_BUILTINS_BUILTINS_REGEXP_H_
-
-#include "src/code-stub-assembler.h"
-
-namespace v8 {
-namespace internal {
-
-typedef compiler::Node Node;
-typedef compiler::CodeAssemblerState CodeAssemblerState;
-typedef compiler::CodeAssemblerLabel CodeAssemblerLabel;
-
-class RegExpBuiltinsAssembler : public CodeStubAssembler {
- public:
-  explicit RegExpBuiltinsAssembler(CodeAssemblerState* state)
-      : CodeStubAssembler(state) {}
-
-  void BranchIfFastRegExp(Node* const context, Node* const map,
-                          Label* const if_isunmodified,
-                          Label* const if_ismodified);
-
- protected:
-  Node* FastLoadLastIndex(Node* regexp);
-  Node* SlowLoadLastIndex(Node* context, Node* regexp);
-  Node* LoadLastIndex(Node* context, Node* regexp, bool is_fastpath);
-
-  void FastStoreLastIndex(Node* regexp, Node* value);
-  void SlowStoreLastIndex(Node* context, Node* regexp, Node* value);
-  void StoreLastIndex(Node* context, Node* regexp, Node* value,
-                      bool is_fastpath);
-
-  // Loads {var_string_start} and {var_string_end} with the corresponding
-  // offsets into the given {string_data}.
-  void GetStringPointers(Node* const string_data, Node* const offset,
-                         Node* const last_index, Node* const string_length,
-                         String::Encoding encoding, Variable* var_string_start,
-                         Variable* var_string_end);
-
-  // Low level logic around the actual call into generated Irregexp code.
-  Node* IrregexpExec(Node* const context, Node* const regexp,
-                     Node* const string, Node* const last_index,
-                     Node* const match_info);
-
-  Node* ConstructNewResultFromMatchInfo(Node* const context, Node* const regexp,
-                                        Node* const match_info,
-                                        Node* const string);
-
-  Node* RegExpPrototypeExecBodyWithoutResult(Node* const context,
-                                             Node* const regexp,
-                                             Node* const string,
-                                             Label* if_didnotmatch,
-                                             const bool is_fastpath);
-  Node* RegExpPrototypeExecBody(Node* const context, Node* const regexp,
-                                Node* const string, const bool is_fastpath);
-
-  Node* ThrowIfNotJSReceiver(Node* context, Node* maybe_receiver,
-                             MessageTemplate::Template msg_template,
-                             char const* method_name);
-
-  // Analogous to BranchIfFastRegExp, for use in asserts.
-  Node* IsFastRegExpMap(Node* const context, Node* const map);
-
-  Node* IsInitialRegExpMap(Node* context, Node* map);
-  void BranchIfFastRegExpResult(Node* context, Node* map,
-                                Label* if_isunmodified, Label* if_ismodified);
-
-  Node* FlagsGetter(Node* const context, Node* const regexp, bool is_fastpath);
-
-  Node* FastFlagGetter(Node* const regexp, JSRegExp::Flag flag);
-  Node* SlowFlagGetter(Node* const context, Node* const regexp,
-                       JSRegExp::Flag flag);
-  Node* FlagGetter(Node* const context, Node* const regexp, JSRegExp::Flag flag,
-                   bool is_fastpath);
-  void FlagGetter(JSRegExp::Flag flag, v8::Isolate::UseCounterFeature counter,
-                  const char* method_name);
-
-  Node* IsRegExp(Node* const context, Node* const maybe_receiver);
-  Node* RegExpInitialize(Node* const context, Node* const regexp,
-                         Node* const maybe_pattern, Node* const maybe_flags);
-
-  Node* RegExpExec(Node* context, Node* regexp, Node* string);
-
-  Node* AdvanceStringIndex(Node* const string, Node* const index,
-                           Node* const is_unicode);
-
-  void RegExpPrototypeMatchBody(Node* const context, Node* const regexp,
-                                Node* const string, const bool is_fastpath);
-
-  void RegExpPrototypeSearchBodyFast(Node* const context, Node* const regexp,
-                                     Node* const string);
-  void RegExpPrototypeSearchBodySlow(Node* const context, Node* const regexp,
-                                     Node* const string);
-
-  void RegExpPrototypeSplitBody(Node* const context, Node* const regexp,
-                                Node* const string, Node* const limit);
-
-  Node* ReplaceGlobalCallableFastPath(Node* context, Node* regexp, Node* string,
-                                      Node* replace_callable);
-  Node* ReplaceSimpleStringFastPath(Node* context, Node* regexp, Node* string,
-                                    Node* replace_string);
-};
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_BUILTINS_BUILTINS_REGEXP_H_