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annotate lib/CodeGen/AsmPrinter/DwarfAccelTable.cpp @ 117:facf19d07cd9

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 24 Aug 2016 20:10:41 +0900
parents 7d135dc70f03
children 803732b1fca8
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1 //=-- llvm/CodeGen/DwarfAccelTable.cpp - Dwarf Accelerator Tables -*- C++ -*-=//
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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 contains support for writing dwarf accelerator tables.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "DwarfAccelTable.h"
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15 #include "DwarfCompileUnit.h"
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16 #include "DwarfDebug.h"
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17 #include "llvm/ADT/STLExtras.h"
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18 #include "llvm/ADT/Twine.h"
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19 #include "llvm/CodeGen/AsmPrinter.h"
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20 #include "llvm/CodeGen/DIE.h"
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21 #include "llvm/MC/MCExpr.h"
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22 #include "llvm/MC/MCStreamer.h"
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23 #include "llvm/MC/MCSymbol.h"
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24 #include "llvm/Support/Debug.h"
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25
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26 using namespace llvm;
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27
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28 // The length of the header data is always going to be 4 + 4 + 4*NumAtoms.
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29 DwarfAccelTable::DwarfAccelTable(ArrayRef<DwarfAccelTable::Atom> atomList)
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30 : Header(8 + (atomList.size() * 4)), HeaderData(atomList),
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31 Entries(Allocator) {}
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32
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33 void DwarfAccelTable::AddName(DwarfStringPoolEntryRef Name, const DIE *die,
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34 char Flags) {
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35 assert(Data.empty() && "Already finalized!");
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36 // If the string is in the list already then add this die to the list
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37 // otherwise add a new one.
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38 DataArray &DIEs = Entries[Name.getString()];
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39 assert(!DIEs.Name || DIEs.Name == Name);
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40 DIEs.Name = Name;
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41 DIEs.Values.push_back(new (Allocator) HashDataContents(die, Flags));
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42 }
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43
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44 void DwarfAccelTable::ComputeBucketCount() {
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45 // First get the number of unique hashes.
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46 std::vector<uint32_t> uniques(Data.size());
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47 for (size_t i = 0, e = Data.size(); i < e; ++i)
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48 uniques[i] = Data[i]->HashValue;
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49 array_pod_sort(uniques.begin(), uniques.end());
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50 std::vector<uint32_t>::iterator p =
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51 std::unique(uniques.begin(), uniques.end());
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52 uint32_t num = std::distance(uniques.begin(), p);
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53
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54 // Then compute the bucket size, minimum of 1 bucket.
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55 if (num > 1024)
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56 Header.bucket_count = num / 4;
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57 else if (num > 16)
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58 Header.bucket_count = num / 2;
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59 else
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60 Header.bucket_count = num > 0 ? num : 1;
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61
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62 Header.hashes_count = num;
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63 }
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64
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65 // compareDIEs - comparison predicate that sorts DIEs by their offset.
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66 static bool compareDIEs(const DwarfAccelTable::HashDataContents *A,
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67 const DwarfAccelTable::HashDataContents *B) {
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68 return A->Die->getOffset() < B->Die->getOffset();
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69 }
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70
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71 void DwarfAccelTable::FinalizeTable(AsmPrinter *Asm, StringRef Prefix) {
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72 // Create the individual hash data outputs.
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73 Data.reserve(Entries.size());
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74 for (StringMap<DataArray>::iterator EI = Entries.begin(), EE = Entries.end();
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75 EI != EE; ++EI) {
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76
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77 // Unique the entries.
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78 std::stable_sort(EI->second.Values.begin(), EI->second.Values.end(), compareDIEs);
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79 EI->second.Values.erase(
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80 std::unique(EI->second.Values.begin(), EI->second.Values.end()),
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81 EI->second.Values.end());
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82
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83 HashData *Entry = new (Allocator) HashData(EI->getKey(), EI->second);
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84 Data.push_back(Entry);
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85 }
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86
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87 // Figure out how many buckets we need, then compute the bucket
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88 // contents and the final ordering. We'll emit the hashes and offsets
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89 // by doing a walk during the emission phase. We add temporary
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90 // symbols to the data so that we can reference them during the offset
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91 // later, we'll emit them when we emit the data.
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92 ComputeBucketCount();
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93
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94 // Compute bucket contents and final ordering.
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95 Buckets.resize(Header.bucket_count);
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96 for (size_t i = 0, e = Data.size(); i < e; ++i) {
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97 uint32_t bucket = Data[i]->HashValue % Header.bucket_count;
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98 Buckets[bucket].push_back(Data[i]);
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99 Data[i]->Sym = Asm->createTempSymbol(Prefix);
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100 }
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101
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102 // Sort the contents of the buckets by hash value so that hash
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103 // collisions end up together. Stable sort makes testing easier and
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104 // doesn't cost much more.
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105 for (size_t i = 0; i < Buckets.size(); ++i)
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106 std::stable_sort(Buckets[i].begin(), Buckets[i].end(),
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107 [] (HashData *LHS, HashData *RHS) {
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108 return LHS->HashValue < RHS->HashValue;
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109 });
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110 }
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111
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112 // Emits the header for the table via the AsmPrinter.
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113 void DwarfAccelTable::EmitHeader(AsmPrinter *Asm) {
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114 Asm->OutStreamer->AddComment("Header Magic");
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115 Asm->EmitInt32(Header.magic);
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116 Asm->OutStreamer->AddComment("Header Version");
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117 Asm->EmitInt16(Header.version);
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118 Asm->OutStreamer->AddComment("Header Hash Function");
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119 Asm->EmitInt16(Header.hash_function);
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120 Asm->OutStreamer->AddComment("Header Bucket Count");
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121 Asm->EmitInt32(Header.bucket_count);
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122 Asm->OutStreamer->AddComment("Header Hash Count");
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123 Asm->EmitInt32(Header.hashes_count);
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124 Asm->OutStreamer->AddComment("Header Data Length");
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 Asm->EmitInt32(Header.header_data_len);
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
126 Asm->OutStreamer->AddComment("HeaderData Die Offset Base");
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127 Asm->EmitInt32(HeaderData.die_offset_base);
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
128 Asm->OutStreamer->AddComment("HeaderData Atom Count");
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 Asm->EmitInt32(HeaderData.Atoms.size());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130 for (size_t i = 0; i < HeaderData.Atoms.size(); i++) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 Atom A = HeaderData.Atoms[i];
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
132 Asm->OutStreamer->AddComment(dwarf::AtomTypeString(A.type));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 Asm->EmitInt16(A.type);
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
134 Asm->OutStreamer->AddComment(dwarf::FormEncodingString(A.form));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 Asm->EmitInt16(A.form);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 // Walk through and emit the buckets for the table. Each index is
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 // an offset into the list of hashes.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 void DwarfAccelTable::EmitBuckets(AsmPrinter *Asm) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 unsigned index = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 for (size_t i = 0, e = Buckets.size(); i < e; ++i) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
144 Asm->OutStreamer->AddComment("Bucket " + Twine(i));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 if (Buckets[i].size() != 0)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 Asm->EmitInt32(index);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 else
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 Asm->EmitInt32(UINT32_MAX);
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
149 // Buckets point in the list of hashes, not to the data. Do not
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
150 // increment the index multiple times in case of hash collisions.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
151 uint64_t PrevHash = UINT64_MAX;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
152 for (auto *HD : Buckets[i]) {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
153 uint32_t HashValue = HD->HashValue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
154 if (PrevHash != HashValue)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
155 ++index;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
156 PrevHash = HashValue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
157 }
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 }
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 // Walk through the buckets and emit the individual hashes for each
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 // bucket.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 void DwarfAccelTable::EmitHashes(AsmPrinter *Asm) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
164 uint64_t PrevHash = UINT64_MAX;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 for (size_t i = 0, e = Buckets.size(); i < e; ++i) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 for (HashList::const_iterator HI = Buckets[i].begin(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 HE = Buckets[i].end();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 HI != HE; ++HI) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
169 uint32_t HashValue = (*HI)->HashValue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
170 if (PrevHash == HashValue)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
171 continue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
172 Asm->OutStreamer->AddComment("Hash in Bucket " + Twine(i));
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
173 Asm->EmitInt32(HashValue);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
174 PrevHash = HashValue;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 // Walk through the buckets and emit the individual offsets for each
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 // element in each bucket. This is done via a symbol subtraction from the
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 // beginning of the section. The non-section symbol will be output later
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 // when we emit the actual data.
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
183 void DwarfAccelTable::emitOffsets(AsmPrinter *Asm, const MCSymbol *SecBegin) {
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
184 uint64_t PrevHash = UINT64_MAX;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 for (size_t i = 0, e = Buckets.size(); i < e; ++i) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 for (HashList::const_iterator HI = Buckets[i].begin(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 HE = Buckets[i].end();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 HI != HE; ++HI) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
189 uint32_t HashValue = (*HI)->HashValue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
190 if (PrevHash == HashValue)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
191 continue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
192 PrevHash = HashValue;
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
193 Asm->OutStreamer->AddComment("Offset in Bucket " + Twine(i));
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
194 MCContext &Context = Asm->OutStreamer->getContext();
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
195 const MCExpr *Sub = MCBinaryExpr::createSub(
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
196 MCSymbolRefExpr::create((*HI)->Sym, Context),
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
197 MCSymbolRefExpr::create(SecBegin, Context), Context);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
198 Asm->OutStreamer->EmitValue(Sub, sizeof(uint32_t));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 // Walk through the buckets and emit the full data for each element in
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 // the bucket. For the string case emit the dies and the various offsets.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 // Terminate each HashData bucket with 0.
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
206 void DwarfAccelTable::EmitData(AsmPrinter *Asm, DwarfDebug *D) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 for (size_t i = 0, e = Buckets.size(); i < e; ++i) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
208 uint64_t PrevHash = UINT64_MAX;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 for (HashList::const_iterator HI = Buckets[i].begin(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 HE = Buckets[i].end();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 HI != HE; ++HI) {
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
212 // Terminate the previous entry if there is no hash collision
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
213 // with the current one.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
214 if (PrevHash != UINT64_MAX && PrevHash != (*HI)->HashValue)
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
215 Asm->EmitInt32(0);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216 // Remember to emit the label for our offset.
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
217 Asm->OutStreamer->EmitLabel((*HI)->Sym);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
218 Asm->OutStreamer->AddComment((*HI)->Str);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
219 Asm->emitDwarfStringOffset((*HI)->Data.Name);
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
220 Asm->OutStreamer->AddComment("Num DIEs");
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 33
diff changeset
221 Asm->EmitInt32((*HI)->Data.Values.size());
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 33
diff changeset
222 for (HashDataContents *HD : (*HI)->Data.Values) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 // Emit the DIE offset
83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
224 DwarfCompileUnit *CU = D->lookupUnit(HD->Die->getUnit());
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
225 assert(CU && "Accelerated DIE should belong to a CU.");
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
226 Asm->EmitInt32(HD->Die->getOffset() + CU->getDebugInfoOffset());
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 // If we have multiple Atoms emit that info too.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 // FIXME: A bit of a hack, we either emit only one atom or all info.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 if (HeaderData.Atoms.size() > 1) {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 33
diff changeset
230 Asm->EmitInt16(HD->Die->getTag());
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 33
diff changeset
231 Asm->EmitInt8(HD->Flags);
0
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 PrevHash = (*HI)->HashValue;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 }
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
236 // Emit the final end marker for the bucket.
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
237 if (!Buckets[i].empty())
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
238 Asm->EmitInt32(0);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 }
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 // Emit the entire data structure to the output file.
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
243 void DwarfAccelTable::emit(AsmPrinter *Asm, const MCSymbol *SecBegin,
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 83
diff changeset
244 DwarfDebug *D) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 // Emit the header.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 EmitHeader(Asm);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 // Emit the buckets.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 EmitBuckets(Asm);
95c75e76d11b LLVM 3.4
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parents:
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250
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251 // Emit the hashes.
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252 EmitHashes(Asm);
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253
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254 // Emit the offsets.
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255 emitOffsets(Asm, SecBegin);
0
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256
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257 // Emit the hash data.
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258 EmitData(Asm, D);
0
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259 }
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260
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261 #ifndef NDEBUG
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262 void DwarfAccelTable::print(raw_ostream &O) {
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263
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264 Header.print(O);
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265 HeaderData.print(O);
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266
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267 O << "Entries: \n";
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268 for (StringMap<DataArray>::const_iterator EI = Entries.begin(),
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269 EE = Entries.end();
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270 EI != EE; ++EI) {
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271 O << "Name: " << EI->getKeyData() << "\n";
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272 for (HashDataContents *HD : EI->second.Values)
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273 HD->print(O);
0
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274 }
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275
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276 O << "Buckets and Hashes: \n";
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277 for (size_t i = 0, e = Buckets.size(); i < e; ++i)
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278 for (HashList::const_iterator HI = Buckets[i].begin(),
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279 HE = Buckets[i].end();
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280 HI != HE; ++HI)
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281 (*HI)->print(O);
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282
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283 O << "Data: \n";
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284 for (std::vector<HashData *>::const_iterator DI = Data.begin(),
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285 DE = Data.end();
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286 DI != DE; ++DI)
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287 (*DI)->print(O);
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288 }
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289 #endif