Mercurial > hg > CbC > CbC_llvm

comparison lib/CodeGen/LivePhysRegs.cpp @ 134:3a76565eade5 LLVM5.0.1

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update 5.0.1
author mir3636
date Sat, 17 Feb 2018 09:57:20 +0900
parents 803732b1fca8
children c2174574ed3a
comparison
equal deleted inserted replaced
133:c60214abe0e8 134:3a76565eade5
124 OS << " (empty)\n"; 124 OS << " (empty)\n";
125 return; 125 return;
126 } 126 }
127 127
128 for (const_iterator I = begin(), E = end(); I != E; ++I) 128 for (const_iterator I = begin(), E = end(); I != E; ++I)
129 OS << " " << PrintReg(*I, TRI); 129 OS << " " << printReg(*I, TRI);
130 OS << "\n"; 130 OS << "\n";
131 } 131 }
132 132
133 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) 133 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
134 LLVM_DUMP_METHOD void LivePhysRegs::dump() const { 134 LLVM_DUMP_METHOD void LivePhysRegs::dump() const {
203 for (MCPhysReg R : Pristine) 203 for (MCPhysReg R : Pristine)
204 addReg(R); 204 addReg(R);
205 } 205 }
206 206
207 void LivePhysRegs::addLiveOutsNoPristines(const MachineBasicBlock &MBB) { 207 void LivePhysRegs::addLiveOutsNoPristines(const MachineBasicBlock &MBB) {
208 if (!MBB.succ_empty()) { 208 // To get the live-outs we simply merge the live-ins of all successors.
209 // To get the live-outs we simply merge the live-ins of all successors. 209 for (const MachineBasicBlock *Succ : MBB.successors())
210 for (const MachineBasicBlock *Succ : MBB.successors()) 210 addBlockLiveIns(*Succ);
211 addBlockLiveIns(*Succ); 211 if (MBB.isReturnBlock()) {
212 } else if (MBB.isReturnBlock()) { 212 // Return blocks are a special case because we currently don't mark up
213 // For the return block: Add all callee saved registers that are saved and 213 // return instructions completely: specifically, there is no explicit
214 // restored (somewhere); This does not include callee saved registers that 214 // use for callee-saved registers. So we add all callee saved registers
215 // are unused and hence not saved and restored; they are called pristine. 215 // that are saved and restored (somewhere). This does not include
216 // callee saved registers that are unused and hence not saved and
217 // restored; they are called pristine.
218 // FIXME: PEI should add explicit markings to return instructions
219 // instead of implicitly handling them here.
216 const MachineFunction &MF = *MBB.getParent(); 220 const MachineFunction &MF = *MBB.getParent();
217 const MachineFrameInfo &MFI = MF.getFrameInfo(); 221 const MachineFrameInfo &MFI = MF.getFrameInfo();
218 if (MFI.isCalleeSavedInfoValid()) { 222 if (MFI.isCalleeSavedInfoValid()) {
219 for (const CalleeSavedInfo &Info : MFI.getCalleeSavedInfo()) 223 for (const CalleeSavedInfo &Info : MFI.getCalleeSavedInfo())
220 if (Info.isRestored()) 224 if (Info.isRestored())
223 } 227 }
224 } 228 }
225 229
226 void LivePhysRegs::addLiveOuts(const MachineBasicBlock &MBB) { 230 void LivePhysRegs::addLiveOuts(const MachineBasicBlock &MBB) {
227 const MachineFunction &MF = *MBB.getParent(); 231 const MachineFunction &MF = *MBB.getParent();
228 if (!MBB.succ_empty()) { 232 addPristines(MF);
229 addPristines(MF); 233 addLiveOutsNoPristines(MBB);
230 addLiveOutsNoPristines(MBB);
231 } else if (MBB.isReturnBlock()) {
232 // For the return block: Add all callee saved registers.
233 const MachineFrameInfo &MFI = MF.getFrameInfo();
234 if (MFI.isCalleeSavedInfoValid())
235 addCalleeSavedRegs(*this, MF);
236 }
237 } 234 }
238 235
239 void LivePhysRegs::addLiveIns(const MachineBasicBlock &MBB) { 236 void LivePhysRegs::addLiveIns(const MachineBasicBlock &MBB) {
240 const MachineFunction &MF = *MBB.getParent(); 237 const MachineFunction &MF = *MBB.getParent();
241 addPristines(MF); 238 addPristines(MF);