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1 //===- FlattenGlobals.cpp - Flatten global variable initializers-----------===// | 1 //===- FlattenGlobals.cpp - Flatten global variable initializers-----------===// |
2 // | 2 // |
3 // The LLVM Compiler Infrastructure | 3 // The LLVM Compiler Infrastructure |
4 // | 4 // |
5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
7 // | 7 // |
8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
9 // | 9 // |
10 // This pass converts initializers for global variables into a | 10 // This pass converts initializers for global variables into a |
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168 uint8_t *BufEnd; | 168 uint8_t *BufEnd; |
169 | 169 |
170 // 2) an array of relocations. | 170 // 2) an array of relocations. |
171 class Reloc { | 171 class Reloc { |
172 private: | 172 private: |
173 unsigned RelOffset; // Offset at which the relocation is to be applied. | 173 unsigned RelOffset; // Offset at which the relocation is to be applied. |
174 RelocUserType *RelocUser; | 174 RelocUserType *RelocUser; |
175 public: | 175 public: |
176 | 176 |
177 unsigned getRelOffset() const { return RelOffset; } | 177 unsigned getRelOffset() const { return RelOffset; } |
178 Constant *getRelocUse() const { return ::getRelocUseConstant(RelocUser); } | 178 Constant *getRelocUse() const { return getRelocUseConstant(RelocUser); } |
179 Reloc(FlattenGlobalsState &State, unsigned RelOffset, Constant *NewVal) | 179 Reloc(FlattenGlobalsState &State, unsigned RelOffset, Constant *NewVal) |
180 : RelOffset(RelOffset), RelocUser(State.getRelocUserHandle(NewVal)) {} | 180 : RelOffset(RelOffset), RelocUser(State.getRelocUserHandle(NewVal)) {} |
181 | 181 |
182 explicit Reloc(const Reloc &R) | 182 explicit Reloc(const Reloc &R) |
183 : RelOffset(R.RelOffset), RelocUser(R.RelocUser) {} | 183 : RelOffset(R.RelOffset), RelocUser(R.RelocUser) {} |
184 | 184 |
185 void operator=(const Reloc &R) { | 185 void operator=(const Reloc &R) { |
186 RelOffset = R.RelOffset; | 186 RelOffset = R.RelOffset; |
187 RelocUser = R.RelocUser; | 187 RelocUser = R.RelocUser; |
188 } | 188 } |
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537 State.flattenGlobalsWithInitializers(); | 537 State.flattenGlobalsWithInitializers(); |
538 State.removeDeadInitializerConstants(); | 538 State.removeDeadInitializerConstants(); |
539 State.replaceGlobalsWithFlattenedGlobals(); | 539 State.replaceGlobalsWithFlattenedGlobals(); |
540 State.installFlattenedGlobalInitializers(); | 540 State.installFlattenedGlobalInitializers(); |
541 return State.Modified; | 541 return State.Modified; |
542 } | 542 } |
543 | 543 |
544 ModulePass *llvm::createFlattenGlobalsPass() { | 544 ModulePass *llvm::createFlattenGlobalsPass() { |
545 return new FlattenGlobals(); | 545 return new FlattenGlobals(); |
546 } | 546 } |
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