DFG IR shouldn't have a separate node for every kind of put hint that could be descri...
[WebKit-https.git] / Source / JavaScriptCore / dfg / DFGPromoteHeapAccess.h
1 /*
2  * Copyright (C) 2014, 2015 Apple Inc. All rights reserved.
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6  * are met:
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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
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17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
24  */
25
26 #ifndef DFGPromoteHeapAccess_h
27 #define DFGPromoteHeapAccess_h
28
29 #if ENABLE(DFG_JIT)
30
31 #include "DFGNode.h"
32 #include "DFGPromotedHeapLocation.h"
33
34 namespace JSC { namespace DFG {
35
36 template<typename WriteFunctor, typename ReadFunctor>
37 void promoteHeapAccess(Node* node, const WriteFunctor& write, const ReadFunctor& read)
38 {
39     switch (node->op()) {
40     case CheckStructure: {
41         if (node->child1()->isPhantomObjectAllocation())
42             read(PromotedHeapLocation(StructurePLoc, node->child1()));
43         break;
44     }
45     
46     case GetByOffset:
47     case GetGetterSetterByOffset: {
48         if (node->child2()->isPhantomObjectAllocation()) {
49             unsigned identifierNumber = node->storageAccessData().identifierNumber;
50             read(PromotedHeapLocation(NamedPropertyPLoc, node->child2(), identifierNumber));
51         }
52         break;
53     }
54
55     case MultiGetByOffset: {
56         if (node->child1()->isPhantomObjectAllocation()) {
57             unsigned identifierNumber = node->multiGetByOffsetData().identifierNumber;
58             read(PromotedHeapLocation(NamedPropertyPLoc, node->child1(), identifierNumber));
59         }
60         break;
61     }
62         
63     case PutHint: {
64         ASSERT(node->child1()->isPhantomObjectAllocation());
65         write(
66             PromotedHeapLocation(node->child1().node(), node->promotedLocationDescriptor()),
67             node->child2());
68         break;
69     }
70
71     default:
72         break;
73     }
74 }
75
76 } } // namespace JSC::DFG
77
78 #endif // ENABLE(DFG_JIT)
79
80 #endif // DFGPromoteHeapAccess_h
81