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Issue 1405363003: Move Hydrogen and Lithium to src/crankshaft/ (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebased Created 5 years, 2 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef V8_HYDROGEN_OSR_H_
6 #define V8_HYDROGEN_OSR_H_
7
8 #include "src/hydrogen.h"
9 #include "src/ast.h"
10 #include "src/zone.h"
11
12 namespace v8 {
13 namespace internal {
14
15 // Responsible for building graph parts related to OSR and otherwise
16 // setting up the graph to do an OSR compile.
17 class HOsrBuilder : public ZoneObject {
18 public:
19 explicit HOsrBuilder(HOptimizedGraphBuilder* builder)
20 : unoptimized_frame_slots_(0),
21 builder_(builder),
22 osr_entry_(NULL),
23 osr_loop_entry_(NULL),
24 osr_values_(NULL) { }
25
26 // Creates the loop entry block for the given statement, setting up OSR
27 // entries as necessary, and sets the current block to the new block.
28 HBasicBlock* BuildOsrLoopEntry(IterationStatement* statement);
29
30 // Process the hydrogen graph after it has been completed, performing
31 // any OSR-specific cleanups or changes.
32 void FinishGraph();
33
34 // Process the OSR values and phis after initial graph optimization.
35 void FinishOsrValues();
36
37 // Return the number of slots in the unoptimized frame at the entry to OSR.
38 int UnoptimizedFrameSlots() const {
39 return unoptimized_frame_slots_;
40 }
41
42 bool HasOsrEntryAt(IterationStatement* statement);
43
44 private:
45 int unoptimized_frame_slots_;
46 HOptimizedGraphBuilder* builder_;
47 HBasicBlock* osr_entry_;
48 HBasicBlock* osr_loop_entry_;
49 ZoneList<HUnknownOSRValue*>* osr_values_;
50 };
51
52 } // namespace internal
53 } // namespace v8
54
55 #endif // V8_HYDROGEN_OSR_H_
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