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fix
author mir3636
date Wed, 06 Dec 2017 14:37:17 +0900
parents 803732b1fca8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===- RegionPass.cpp - Region Pass and Region Pass Manager ---------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file implements RegionPass and RGPassManager. All region optimization
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11 // and transformation passes are derived from RegionPass. RGPassManager is
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12 // responsible for managing RegionPasses.
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13 // Most of this code has been COPIED from LoopPass.cpp
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14 //
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15 //===----------------------------------------------------------------------===//
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16 #include "llvm/Analysis/RegionPass.h"
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17 #include "llvm/Analysis/RegionIterator.h"
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18 #include "llvm/IR/OptBisect.h"
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19 #include "llvm/Support/Debug.h"
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20 #include "llvm/Support/Timer.h"
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21 #include "llvm/Support/raw_ostream.h"
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22 using namespace llvm;
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23
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24 #define DEBUG_TYPE "regionpassmgr"
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25
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26 //===----------------------------------------------------------------------===//
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27 // RGPassManager
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28 //
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29
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30 char RGPassManager::ID = 0;
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31
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32 RGPassManager::RGPassManager()
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33 : FunctionPass(ID), PMDataManager() {
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34 skipThisRegion = false;
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35 redoThisRegion = false;
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36 RI = nullptr;
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37 CurrentRegion = nullptr;
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38 }
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39
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40 // Recurse through all subregions and all regions into RQ.
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41 static void addRegionIntoQueue(Region &R, std::deque<Region *> &RQ) {
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42 RQ.push_back(&R);
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43 for (const auto &E : R)
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44 addRegionIntoQueue(*E, RQ);
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45 }
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46
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47 /// Pass Manager itself does not invalidate any analysis info.
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48 void RGPassManager::getAnalysisUsage(AnalysisUsage &Info) const {
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49 Info.addRequired<RegionInfoPass>();
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50 Info.setPreservesAll();
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51 }
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52
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53 /// run - Execute all of the passes scheduled for execution. Keep track of
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54 /// whether any of the passes modifies the function, and if so, return true.
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55 bool RGPassManager::runOnFunction(Function &F) {
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56 RI = &getAnalysis<RegionInfoPass>().getRegionInfo();
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57 bool Changed = false;
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58
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59 // Collect inherited analysis from Module level pass manager.
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60 populateInheritedAnalysis(TPM->activeStack);
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61
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62 addRegionIntoQueue(*RI->getTopLevelRegion(), RQ);
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63
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64 if (RQ.empty()) // No regions, skip calling finalizers
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65 return false;
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66
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67 // Initialization
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68 for (Region *R : RQ) {
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69 for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
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70 RegionPass *RP = (RegionPass *)getContainedPass(Index);
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71 Changed |= RP->doInitialization(R, *this);
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72 }
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73 }
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74
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75 // Walk Regions
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76 while (!RQ.empty()) {
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77
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78 CurrentRegion = RQ.back();
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79 skipThisRegion = false;
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80 redoThisRegion = false;
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81
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82 // Run all passes on the current Region.
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83 for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
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84 RegionPass *P = (RegionPass*)getContainedPass(Index);
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85
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86 if (isPassDebuggingExecutionsOrMore()) {
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87 dumpPassInfo(P, EXECUTION_MSG, ON_REGION_MSG,
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88 CurrentRegion->getNameStr());
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89 dumpRequiredSet(P);
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90 }
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91
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92 initializeAnalysisImpl(P);
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93
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94 {
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95 PassManagerPrettyStackEntry X(P, *CurrentRegion->getEntry());
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96
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97 TimeRegion PassTimer(getPassTimer(P));
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98 Changed |= P->runOnRegion(CurrentRegion, *this);
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99 }
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100
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101 if (isPassDebuggingExecutionsOrMore()) {
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102 if (Changed)
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103 dumpPassInfo(P, MODIFICATION_MSG, ON_REGION_MSG,
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104 skipThisRegion ? "<deleted>" :
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105 CurrentRegion->getNameStr());
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106 dumpPreservedSet(P);
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107 }
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108
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109 if (!skipThisRegion) {
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110 // Manually check that this region is still healthy. This is done
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111 // instead of relying on RegionInfo::verifyRegion since RegionInfo
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112 // is a function pass and it's really expensive to verify every
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113 // Region in the function every time. That level of checking can be
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114 // enabled with the -verify-region-info option.
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115 {
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116 TimeRegion PassTimer(getPassTimer(P));
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117 CurrentRegion->verifyRegion();
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118 }
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119
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120 // Then call the regular verifyAnalysis functions.
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121 verifyPreservedAnalysis(P);
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122 }
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123
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124 removeNotPreservedAnalysis(P);
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125 recordAvailableAnalysis(P);
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126 removeDeadPasses(P,
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127 (!isPassDebuggingExecutionsOrMore() || skipThisRegion) ?
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128 "<deleted>" : CurrentRegion->getNameStr(),
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129 ON_REGION_MSG);
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130
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131 if (skipThisRegion)
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132 // Do not run other passes on this region.
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133 break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 // If the region was deleted, release all the region passes. This frees up
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 // some memory, and avoids trouble with the pass manager trying to call
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 // verifyAnalysis on them.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 if (skipThisRegion)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 Pass *P = getContainedPass(Index);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 freePass(P, "<deleted>", ON_REGION_MSG);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 // Pop the region from queue after running all passes.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 RQ.pop_back();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 if (redoThisRegion)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 RQ.push_back(CurrentRegion);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 // Free all region nodes created in region passes.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 RI->clearNodeCache();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 // Finalization
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 RegionPass *P = (RegionPass*)getContainedPass(Index);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 Changed |= P->doFinalization();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 // Print the region tree after all pass.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 DEBUG(
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 dbgs() << "\nRegion tree of function " << F.getName()
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 << " after all region Pass:\n";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 RI->dump();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 dbgs() << "\n";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 );
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 return Changed;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 /// Print passes managed by this manager
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 void RGPassManager::dumpPassStructure(unsigned Offset) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 errs().indent(Offset*2) << "Region Pass Manager\n";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 Pass *P = getContainedPass(Index);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 P->dumpPassStructure(Offset + 1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 dumpLastUses(P, Offset+1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 namespace {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 // PrintRegionPass
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 class PrintRegionPass : public RegionPass {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 private:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 std::string Banner;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 raw_ostream &Out; // raw_ostream to print on.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 public:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 static char ID;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 PrintRegionPass(const std::string &B, raw_ostream &o)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 : RegionPass(ID), Banner(B), Out(o) {}
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
195 void getAnalysisUsage(AnalysisUsage &AU) const override {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 AU.setPreservesAll();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
199 bool runOnRegion(Region *R, RGPassManager &RGM) override {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 Out << Banner;
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
201 for (const auto *BB : R->blocks()) {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
202 if (BB)
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
203 BB->print(Out);
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
204 else
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
205 Out << "Printing <null> Block";
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
206 }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 }
121
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
210
803732b1fca8 LLVM 5.0
kono
parents: 120
diff changeset
211 StringRef getPassName() const override { return "Print Region IR"; }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 };
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 char PrintRegionPass::ID = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 } //end anonymous namespace
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 // RegionPass
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 // Check if this pass is suitable for the current RGPassManager, if
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 // available. This pass P is not suitable for a RGPassManager if P
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 // is not preserving higher level analysis info used by other
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 // RGPassManager passes. In such case, pop RGPassManager from the
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 // stack. This will force assignPassManager() to create new
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 // LPPassManger as expected.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 void RegionPass::preparePassManager(PMStack &PMS) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 // Find RGPassManager
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 while (!PMS.empty() &&
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 PMS.top()->getPassManagerType() > PMT_RegionPassManager)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 PMS.pop();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 // If this pass is destroying high level information that is used
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 // by other passes that are managed by LPM then do not insert
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 // this pass in current LPM. Use new RGPassManager.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 if (PMS.top()->getPassManagerType() == PMT_RegionPassManager &&
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 !PMS.top()->preserveHigherLevelAnalysis(this))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 PMS.pop();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 /// Assign pass manager to manage this pass.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 void RegionPass::assignPassManager(PMStack &PMS,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 PassManagerType PreferredType) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 // Find RGPassManager
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 while (!PMS.empty() &&
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 PMS.top()->getPassManagerType() > PMT_RegionPassManager)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 PMS.pop();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 RGPassManager *RGPM;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 // Create new Region Pass Manager if it does not exist.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 if (PMS.top()->getPassManagerType() == PMT_RegionPassManager)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 RGPM = (RGPassManager*)PMS.top();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 else {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257 assert (!PMS.empty() && "Unable to create Region Pass Manager");
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 PMDataManager *PMD = PMS.top();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 // [1] Create new Region Pass Manager
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 RGPM = new RGPassManager();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 RGPM->populateInheritedAnalysis(PMS);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 // [2] Set up new manager's top level manager
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 PMTopLevelManager *TPM = PMD->getTopLevelManager();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 TPM->addIndirectPassManager(RGPM);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 // [3] Assign manager to manage this new manager. This may create
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 // and push new managers into PMS
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270 TPM->schedulePass(RGPM);
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271
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272 // [4] Push new manager into PMS
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273 PMS.push(RGPM);
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274 }
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275
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276 RGPM->add(this);
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277 }
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278
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279 /// Get the printer pass
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280 Pass *RegionPass::createPrinterPass(raw_ostream &O,
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281 const std::string &Banner) const {
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282 return new PrintRegionPass(Banner, O);
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283 }
121
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284
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285 bool RegionPass::skipRegion(Region &R) const {
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286 Function &F = *R.getEntry()->getParent();
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287 if (!F.getContext().getOptBisect().shouldRunPass(this, R))
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288 return true;
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289
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290 if (F.hasFnAttribute(Attribute::OptimizeNone)) {
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291 // Report this only once per function.
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292 if (R.getEntry() == &F.getEntryBlock())
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293 DEBUG(dbgs() << "Skipping pass '" << getPassName()
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294 << "' on function " << F.getName() << "\n");
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295 return true;
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296 }
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297 return false;
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298 }