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comparison lib/MC/MCModule.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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-1:000000000000 0:95c75e76d11b
1 //===- lib/MC/MCModule.cpp - MCModule implementation ----------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/MC/MCModule.h"
11 #include "llvm/MC/MCAtom.h"
12 #include "llvm/MC/MCFunction.h"
13 #include <algorithm>
14
15 using namespace llvm;
16
17 static bool AtomComp(const MCAtom *L, uint64_t Addr) {
18 return L->getEndAddr() < Addr;
19 }
20
21 static bool AtomCompInv(uint64_t Addr, const MCAtom *R) {
22 return Addr < R->getEndAddr();
23 }
24
25 void MCModule::map(MCAtom *NewAtom) {
26 uint64_t Begin = NewAtom->Begin;
27
28 assert(Begin <= NewAtom->End && "Creating MCAtom with endpoints reversed?");
29
30 // Check for atoms already covering this range.
31 AtomListTy::iterator I = std::lower_bound(atom_begin(), atom_end(),
32 Begin, AtomComp);
33 assert((I == atom_end() || (*I)->getBeginAddr() > NewAtom->End)
34 && "Offset range already occupied!");
35
36 // Insert the new atom to the list.
37 Atoms.insert(I, NewAtom);
38 }
39
40 MCTextAtom *MCModule::createTextAtom(uint64_t Begin, uint64_t End) {
41 MCTextAtom *NewAtom = new MCTextAtom(this, Begin, End);
42 map(NewAtom);
43 return NewAtom;
44 }
45
46 MCDataAtom *MCModule::createDataAtom(uint64_t Begin, uint64_t End) {
47 MCDataAtom *NewAtom = new MCDataAtom(this, Begin, End);
48 map(NewAtom);
49 return NewAtom;
50 }
51
52 // remap - Update the interval mapping for an atom.
53 void MCModule::remap(MCAtom *Atom, uint64_t NewBegin, uint64_t NewEnd) {
54 // Find and erase the old mapping.
55 AtomListTy::iterator I = std::lower_bound(atom_begin(), atom_end(),
56 Atom->Begin, AtomComp);
57 assert(I != atom_end() && "Atom offset not found in module!");
58 assert(*I == Atom && "Previous atom mapping was invalid!");
59 Atoms.erase(I);
60
61 // FIXME: special case NewBegin == Atom->Begin
62
63 // Insert the new mapping.
64 AtomListTy::iterator NewI = std::lower_bound(atom_begin(), atom_end(),
65 NewBegin, AtomComp);
66 assert((NewI == atom_end() || (*NewI)->getBeginAddr() > Atom->End)
67 && "Offset range already occupied!");
68 Atoms.insert(NewI, Atom);
69
70 // Update the atom internal bounds.
71 Atom->Begin = NewBegin;
72 Atom->End = NewEnd;
73 }
74
75 const MCAtom *MCModule::findAtomContaining(uint64_t Addr) const {
76 AtomListTy::const_iterator I = std::lower_bound(atom_begin(), atom_end(),
77 Addr, AtomComp);
78 if (I != atom_end() && (*I)->getBeginAddr() <= Addr)
79 return *I;
80 return 0;
81 }
82
83 MCAtom *MCModule::findAtomContaining(uint64_t Addr) {
84 return const_cast<MCAtom*>(
85 const_cast<const MCModule *>(this)->findAtomContaining(Addr));
86 }
87
88 const MCAtom *MCModule::findFirstAtomAfter(uint64_t Addr) const {
89 AtomListTy::const_iterator I = std::upper_bound(atom_begin(), atom_end(),
90 Addr, AtomCompInv);
91 if (I != atom_end())
92 return *I;
93 return 0;
94 }
95
96 MCAtom *MCModule::findFirstAtomAfter(uint64_t Addr) {
97 return const_cast<MCAtom*>(
98 const_cast<const MCModule *>(this)->findFirstAtomAfter(Addr));
99 }
100
101 MCFunction *MCModule::createFunction(StringRef Name) {
102 Functions.push_back(new MCFunction(Name, this));
103 return Functions.back();
104 }
105
106 static bool CompBBToAtom(MCBasicBlock *BB, const MCTextAtom *Atom) {
107 return BB->getInsts() < Atom;
108 }
109
110 void MCModule::splitBasicBlocksForAtom(const MCTextAtom *TA,
111 const MCTextAtom *NewTA) {
112 BBsByAtomTy::iterator
113 I = std::lower_bound(BBsByAtom.begin(), BBsByAtom.end(),
114 TA, CompBBToAtom);
115 for (; I != BBsByAtom.end() && (*I)->getInsts() == TA; ++I) {
116 MCBasicBlock *BB = *I;
117 MCBasicBlock *NewBB = &BB->getParent()->createBlock(*NewTA);
118 BB->splitBasicBlock(NewBB);
119 }
120 }
121
122 void MCModule::trackBBForAtom(const MCTextAtom *Atom, MCBasicBlock *BB) {
123 assert(Atom == BB->getInsts() && "Text atom doesn't back the basic block!");
124 BBsByAtomTy::iterator I = std::lower_bound(BBsByAtom.begin(),
125 BBsByAtom.end(),
126 Atom, CompBBToAtom);
127 for (; I != BBsByAtom.end() && (*I)->getInsts() == Atom; ++I)
128 if (*I == BB)
129 return;
130 BBsByAtom.insert(I, BB);
131 }
132
133 MCModule::~MCModule() {
134 for (AtomListTy::iterator AI = atom_begin(),
135 AE = atom_end();
136 AI != AE; ++AI)
137 delete *AI;
138 for (FunctionListTy::iterator FI = func_begin(),
139 FE = func_end();
140 FI != FE; ++FI)
141 delete *FI;
142 }