1  /*
 2   * Copyright (C) 2018 Apple Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
24   */
25  
26  #pragma once
27  
28  #include "CodeOrigin.h"
29  #include "ExitingInlineKind.h"
30  #include <wtf/HashMap.h>
31  
32  namespace JSC {
33  
34  class CallLinkInfo;
35  class CallLinkStatus;
36  class CodeBlock;
37  class GetByStatus;
38  class InByIdStatus;
39  class PutByIdStatus;
40  class DeleteByStatus;
41  class StructureStubInfo;
42  struct ByValInfo;
43  
44  struct ICStatus {
45      StructureStubInfo* stubInfo { nullptr };
46      CallLinkInfo* callLinkInfo { nullptr };
47      ByValInfo* byValInfo { nullptr };
48      CallLinkStatus* callStatus { nullptr };
49      GetByStatus* getStatus { nullptr };
50      InByIdStatus* inStatus { nullptr };
51      PutByIdStatus* putStatus { nullptr };
52      DeleteByStatus* deleteStatus { nullptr };
53  };
54  
55  typedef HashMap<CodeOrigin, ICStatus, CodeOriginApproximateHash> ICStatusMap;
56  
57  struct ICStatusContext {
58      ICStatus get(CodeOrigin) const;
59      bool isInlined(CodeOrigin) const;
60      ExitingInlineKind inlineKind(CodeOrigin) const;
61      
62      InlineCallFrame* inlineCallFrame { nullptr };
63      CodeBlock* optimizedCodeBlock { nullptr };
64      ICStatusMap map;
65  };
66  
67  typedef Vector<ICStatusContext*, 8> ICStatusContextStack;
68  
69  } // namespace JSC
70