Mercurial > hg > CbC > CbC_llvm

comparison lib/CodeGen/ShrinkWrap.cpp @ 120:1172e4bd9c6f

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update 4.0.0
author mir3636
date Fri, 25 Nov 2016 19:14:25 +0900
parents 7d135dc70f03
children 803732b1fca8
comparison
equal deleted inserted replaced
101:34baf5011add 120:1172e4bd9c6f
197 AU.addRequired<MachinePostDominatorTree>(); 197 AU.addRequired<MachinePostDominatorTree>();
198 AU.addRequired<MachineLoopInfo>(); 198 AU.addRequired<MachineLoopInfo>();
199 MachineFunctionPass::getAnalysisUsage(AU); 199 MachineFunctionPass::getAnalysisUsage(AU);
200 } 200 }
201 201
202 const char *getPassName() const override { 202 StringRef getPassName() const override { return "Shrink Wrapping analysis"; }
203 return "Shrink Wrapping analysis";
204 }
205 203
206 /// \brief Perform the shrink-wrapping analysis and update 204 /// \brief Perform the shrink-wrapping analysis and update
207 /// the MachineFrameInfo attached to \p MF with the results. 205 /// the MachineFrameInfo attached to \p MF with the results.
208 bool runOnMachineFunction(MachineFunction &MF) override; 206 bool runOnMachineFunction(MachineFunction &MF) override;
209 }; 207 };
254 return false; 252 return false;
255 } 253 }
256 254
257 /// \brief Helper function to find the immediate (post) dominator. 255 /// \brief Helper function to find the immediate (post) dominator.
258 template <typename ListOfBBs, typename DominanceAnalysis> 256 template <typename ListOfBBs, typename DominanceAnalysis>
259 MachineBasicBlock *FindIDom(MachineBasicBlock &Block, ListOfBBs BBs, 257 static MachineBasicBlock *FindIDom(MachineBasicBlock &Block, ListOfBBs BBs,
260 DominanceAnalysis &Dom) { 258 DominanceAnalysis &Dom) {
261 MachineBasicBlock *IDom = &Block; 259 MachineBasicBlock *IDom = &Block;
262 for (MachineBasicBlock *BB : BBs) { 260 for (MachineBasicBlock *BB : BBs) {
263 IDom = Dom.findNearestCommonDominator(IDom, BB); 261 IDom = Dom.findNearestCommonDominator(IDom, BB);
264 if (!IDom) 262 if (!IDom)
265 break; 263 break;
519 517
520 DEBUG(dbgs() << "Final shrink wrap candidates:\nSave: " << Save->getNumber() 518 DEBUG(dbgs() << "Final shrink wrap candidates:\nSave: " << Save->getNumber()
521 << ' ' << Save->getName() << "\nRestore: " 519 << ' ' << Save->getName() << "\nRestore: "
522 << Restore->getNumber() << ' ' << Restore->getName() << '\n'); 520 << Restore->getNumber() << ' ' << Restore->getName() << '\n');
523 521
524 MachineFrameInfo *MFI = MF.getFrameInfo(); 522 MachineFrameInfo &MFI = MF.getFrameInfo();
525 MFI->setSavePoint(Save); 523 MFI.setSavePoint(Save);
526 MFI->setRestorePoint(Restore); 524 MFI.setRestorePoint(Restore);
527 ++NumCandidates; 525 ++NumCandidates;
528 return false; 526 return false;
529 } 527 }
530 528
531 bool ShrinkWrap::isShrinkWrapEnabled(const MachineFunction &MF) { 529 bool ShrinkWrap::isShrinkWrapEnabled(const MachineFunction &MF) {