1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "alignment.h"
17 #include "optimize_common.h"
18 #include "cgfunc.h"
19 #include "cg.h"
20 #include "cg_option.h"
21
22 namespace maplebe {
23 #define ALIGN_ANALYZE_DUMP_NEWPW CG_DEBUG_FUNC(func)
24
AnalysisAlignment()25 void AlignAnalysis::AnalysisAlignment()
26 {
27 FindLoopHeader();
28 FindJumpTarget();
29 ComputeLoopAlign();
30 ComputeJumpAlign();
31 if (CGOptions::DoCondBrAlign()) {
32 ComputeCondBranchAlign();
33 }
34 }
35
Dump()36 void AlignAnalysis::Dump()
37 {
38 MIRSymbol *funcSt = GlobalTables::GetGsymTable().GetSymbolFromStidx(cgFunc->GetFunction().GetStIdx().Idx());
39 DEBUG_ASSERT(funcSt != nullptr, "null ptr check");
40 LogInfo::MapleLogger() << "\n********* alignment for " << funcSt->GetName() << " *********\n";
41 LogInfo::MapleLogger() << "------ jumpTargetBBs: " << jumpTargetBBs.size() << " total ------\n";
42 for (auto *jumpLabel : jumpTargetBBs) {
43 LogInfo::MapleLogger() << " === BB_" << jumpLabel->GetId() << " (" << std::hex << jumpLabel << ")" << std::dec
44 << " <" << jumpLabel->GetKindName();
45 if (jumpLabel->GetLabIdx() != MIRLabelTable::GetDummyLabel()) {
46 LogInfo::MapleLogger() << "[labeled with " << jumpLabel->GetLabIdx() << "]> ===\n";
47 }
48 if (!jumpLabel->GetPreds().empty()) {
49 LogInfo::MapleLogger() << "\tpreds: [ ";
50 for (auto *pred : jumpLabel->GetPreds()) {
51 LogInfo::MapleLogger() << "BB_" << pred->GetId();
52 if (pred->GetLabIdx() != MIRLabelTable::GetDummyLabel()) {
53 LogInfo::MapleLogger() << "<labeled with " << jumpLabel->GetLabIdx() << ">";
54 }
55 LogInfo::MapleLogger() << " (" << std::hex << pred << ") " << std::dec << " ";
56 }
57 LogInfo::MapleLogger() << "]\n";
58 }
59 if (jumpLabel->GetPrev() != nullptr) {
60 LogInfo::MapleLogger() << "\tprev: [ ";
61 LogInfo::MapleLogger() << "BB_" << jumpLabel->GetPrev()->GetId();
62 if (jumpLabel->GetPrev()->GetLabIdx() != MIRLabelTable::GetDummyLabel()) {
63 LogInfo::MapleLogger() << "<labeled with " << jumpLabel->GetLabIdx() << ">";
64 }
65 LogInfo::MapleLogger() << " (" << std::hex << jumpLabel->GetPrev() << ") " << std::dec << " ";
66 LogInfo::MapleLogger() << "]\n";
67 }
68 FOR_BB_INSNS_CONST(insn, jumpLabel) {
69 insn->Dump();
70 }
71 }
72 LogInfo::MapleLogger() << "\n------ loopHeaderBBs: " << loopHeaderBBs.size() << " total ------\n";
73 for (auto *loopHeader : loopHeaderBBs) {
74 LogInfo::MapleLogger() << " === BB_" << loopHeader->GetId() << " (" << std::hex << loopHeader << ")" << std::dec
75 << " <" << loopHeader->GetKindName();
76 if (loopHeader->GetLabIdx() != MIRLabelTable::GetDummyLabel()) {
77 LogInfo::MapleLogger() << "[labeled with " << loopHeader->GetLabIdx() << "]> ===\n";
78 }
79 LogInfo::MapleLogger() << "\tLoop Level: " << loopHeader->GetLoop()->GetLoopLevel() << "\n";
80 FOR_BB_INSNS_CONST(insn, loopHeader) {
81 insn->Dump();
82 }
83 }
84 LogInfo::MapleLogger() << "\n------ alignInfos: " << alignInfos.size() << " total ------\n";
85 MapleUnorderedMap<BB *, uint32>::iterator iter;
86 for (iter = alignInfos.begin(); iter != alignInfos.end(); ++iter) {
87 BB *bb = iter->first;
88 LogInfo::MapleLogger() << " === BB_" << bb->GetId() << " (" << std::hex << bb << ")" << std::dec << " <"
89 << bb->GetKindName();
90 if (bb->GetLabIdx() != MIRLabelTable::GetDummyLabel()) {
91 LogInfo::MapleLogger() << "[labeled with " << bb->GetLabIdx() << "]> ===\n";
92 }
93 LogInfo::MapleLogger() << "\talignPower: " << iter->second << "\n";
94 }
95 }
96
PhaseRun(maplebe::CGFunc & func)97 bool CgAlignAnalysis::PhaseRun(maplebe::CGFunc &func)
98 {
99 if (ALIGN_ANALYZE_DUMP_NEWPW) {
100 DotGenerator::GenerateDot("alignanalysis", func, func.GetMirModule(), true, func.GetName());
101 }
102 MemPool *alignMemPool = GetPhaseMemPool();
103 AlignAnalysis *alignAnalysis = func.GetCG()->CreateAlignAnalysis(*alignMemPool, func);
104
105 CHECK_FATAL(alignAnalysis != nullptr, "AlignAnalysis instance create failure");
106 alignAnalysis->AnalysisAlignment();
107 if (ALIGN_ANALYZE_DUMP_NEWPW) {
108 alignAnalysis->Dump();
109 }
110 return true;
111 }
112 } /* namespace maplebe */
113