1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/*
* Copyright (C) 2013, 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DFGCommonData.h"
#if ENABLE(DFG_JIT)
#include "CodeBlock.h"
#include "DFGNode.h"
#include "DFGPlan.h"
#include "InlineCallFrame.h"
#include "JSCInlines.h"
#include "TrackedReferences.h"
#include "VM.h"
namespace JSC { namespace DFG {
void CommonData::notifyCompilingStructureTransition(Plan& plan, CodeBlock* codeBlock, Node* node)
{
plan.transitions.addLazily(
codeBlock,
node->origin.semantic.codeOriginOwner(),
node->transition()->previous,
node->transition()->next);
}
CallSiteIndex CommonData::addCodeOrigin(CodeOrigin codeOrigin)
{
if (codeOrigins.isEmpty()
|| codeOrigins.last() != codeOrigin)
codeOrigins.append(codeOrigin);
unsigned index = codeOrigins.size() - 1;
ASSERT(codeOrigins[index] == codeOrigin);
return CallSiteIndex(index);
}
CallSiteIndex CommonData::addUniqueCallSiteIndex(CodeOrigin codeOrigin)
{
if (callSiteIndexFreeList.size())
return CallSiteIndex(callSiteIndexFreeList.takeAny());
codeOrigins.append(codeOrigin);
unsigned index = codeOrigins.size() - 1;
ASSERT(codeOrigins[index] == codeOrigin);
return CallSiteIndex(index);
}
CallSiteIndex CommonData::lastCallSite() const
{
RELEASE_ASSERT(codeOrigins.size());
return CallSiteIndex(codeOrigins.size() - 1);
}
void CommonData::removeCallSiteIndex(CallSiteIndex callSite)
{
RELEASE_ASSERT(callSite.bits() < codeOrigins.size());
callSiteIndexFreeList.add(callSite.bits());
}
void CommonData::shrinkToFit()
{
codeOrigins.shrinkToFit();
weakReferences.shrinkToFit();
transitions.shrinkToFit();
}
bool CommonData::invalidate()
{
if (!isStillValid)
return false;
for (unsigned i = jumpReplacements.size(); i--;)
jumpReplacements[i].fire();
isStillValid = false;
return true;
}
void CommonData::validateReferences(const TrackedReferences& trackedReferences)
{
if (InlineCallFrameSet* set = inlineCallFrames.get()) {
for (InlineCallFrame* inlineCallFrame : *set) {
for (ValueRecovery& recovery : inlineCallFrame->arguments) {
if (recovery.isConstant())
trackedReferences.check(recovery.constant());
}
if (CodeBlock* baselineCodeBlock = inlineCallFrame->baselineCodeBlock.get())
trackedReferences.check(baselineCodeBlock);
if (inlineCallFrame->calleeRecovery.isConstant())
trackedReferences.check(inlineCallFrame->calleeRecovery.constant());
}
}
for (AdaptiveStructureWatchpoint* watchpoint : adaptiveStructureWatchpoints)
watchpoint->key().validateReferences(trackedReferences);
}
} } // namespace JSC::DFG
#endif // ENABLE(DFG_JIT)
|
