1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "base/macros.h"
18 #include "bb_optimizations.h"
19 #include "compiler_internals.h"
20 #include "dataflow_iterator.h"
21 #include "dataflow_iterator-inl.h"
22 #include "pass_driver_me_opts.h"
23
24 namespace art {
25
26 /*
27 * Create the pass list. These passes are immutable and are shared across the threads.
28 *
29 * Advantage is that there will be no race conditions here.
30 * Disadvantage is the passes can't change their internal states depending on CompilationUnit:
31 * - This is not yet an issue: no current pass would require it.
32 */
33 // The initial list of passes to be used by the PassDriveMEOpts.
34 template<>
35 const Pass* const PassDriver<PassDriverMEOpts>::g_passes[] = {
36 GetPassInstance<CacheFieldLoweringInfo>(),
37 GetPassInstance<CacheMethodLoweringInfo>(),
38 GetPassInstance<SpecialMethodInliner>(),
39 GetPassInstance<CodeLayout>(),
40 GetPassInstance<NullCheckEliminationAndTypeInference>(),
41 GetPassInstance<ClassInitCheckElimination>(),
42 GetPassInstance<GlobalValueNumberingPass>(),
43 GetPassInstance<BBCombine>(),
44 GetPassInstance<BBOptimizations>(),
45 };
46
47 // The number of the passes in the initial list of Passes (g_passes).
48 template<>
49 uint16_t const PassDriver<PassDriverMEOpts>::g_passes_size =
50 arraysize(PassDriver<PassDriverMEOpts>::g_passes);
51
52 // The default pass list is used by the PassDriverME instance of PassDriver
53 // to initialize pass_list_.
54 template<>
55 std::vector<const Pass*> PassDriver<PassDriverMEOpts>::g_default_pass_list(
56 PassDriver<PassDriverMEOpts>::g_passes,
57 PassDriver<PassDriverMEOpts>::g_passes +
58 PassDriver<PassDriverMEOpts>::g_passes_size);
59
60 // By default, do not have a dump pass list.
61 template<>
62 std::string PassDriver<PassDriverMEOpts>::dump_pass_list_ = std::string();
63
64 // By default, do not have a print pass list.
65 template<>
66 std::string PassDriver<PassDriverMEOpts>::print_pass_list_ = std::string();
67
68 // By default, we do not print the pass' information.
69 template<>
70 bool PassDriver<PassDriverMEOpts>::default_print_passes_ = false;
71
ApplyPass(PassDataHolder * data,const Pass * pass)72 void PassDriverMEOpts::ApplyPass(PassDataHolder* data, const Pass* pass) {
73 // First call the base class' version.
74 PassDriver::ApplyPass(data, pass);
75
76 const PassME* pass_me = down_cast<const PassME*> (pass);
77 DCHECK(pass_me != nullptr);
78
79 PassMEDataHolder* pass_me_data_holder = down_cast<PassMEDataHolder*>(data);
80
81 // Now we care about flags.
82 if ((pass_me->GetFlag(kOptimizationBasicBlockChange) == true) ||
83 (pass_me->GetFlag(kOptimizationDefUsesChange) == true)) {
84 CompilationUnit* c_unit = pass_me_data_holder->c_unit;
85 c_unit->mir_graph.get()->CalculateBasicBlockInformation();
86 }
87 }
88
89 } // namespace art
90