1/*
2 * Copyright (C) 2013, 2014 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#include "config.h"
27#include "FTLInlineCacheSize.h"
28
29#if ENABLE(FTL_JIT)
30
31#include "JITInlineCacheGenerator.h"
32#include "MacroAssembler.h"
33
34namespace JSC { namespace FTL {
35
36// The default sizes are x86-64-specific, and were found empirically. They have to cover the worst
37// possible combination of registers leading to the largest possible encoding of each instruction in
38// the IC.
39//
40// FIXME: The ARM64 sizes are overestimates; if there is any branch compaction then we should be able
41// to get away with less. The branch compaction code currently validates the size of the IC before
42// doing any compaction, so we need to overestimate and give the uncompacted size. This would be
43// relatively easy to fix.
44// https://bugs.webkit.org/show_bug.cgi?id=129335
45
46size_t sizeOfGetById()
47{
48#if CPU(ARM64)
49    return 36;
50#else
51    return 30;
52#endif
53}
54
55size_t sizeOfPutById()
56{
57#if CPU(ARM64)
58    return 44;
59#else
60    return 32;
61#endif
62}
63
64size_t sizeOfCall()
65{
66#if CPU(ARM64)
67    return 56;
68#else
69    return 53;
70#endif
71}
72
73} } // namespace JSC::FTL
74
75#endif // ENABLE(FTL_JIT)
76
77