1 //===-- AArch64CondBrTuning.cpp --- Conditional branch tuning for AArch64 -===//
28 #include "AArch64.h"
43 #define DEBUG_TYPE "aarch64-cond-br-tuning"
44 #define AARCH64_CONDBR_TUNING_NAME "AArch64 Conditional Branch Tuning"
73 INITIALIZE_PASS(AArch64CondBrTuning, "aarch64-cond-br-tuning",
94       if (MO.isReg() && MO.isDead() && MO.getReg() == AArch64::NZCV)  in convertToFlagSetting()
101     NewDestReg = Is64Bit ? AArch64::XZR : AArch64::WZR;  in convertToFlagSetting()
118   case AArch64::CBZW:  in convertToCondBr()
119   case AArch64::CBZX:  in convertToCondBr()
122   case AArch64::CBNZW:  in convertToCondBr()
123   case AArch64::CBNZX:  in convertToCondBr()
126   case AArch64::TBZW:  in convertToCondBr()
127   case AArch64::TBZX:  in convertToCondBr()
130   case AArch64::TBNZW:  in convertToCondBr()
131   case AArch64::TBNZX:  in convertToCondBr()
135   return BuildMI(*MI.getParent(), MI, MI.getDebugLoc(), TII->get(AArch64::Bcc))  in convertToCondBr()
152   case AArch64::ADDWri:  in tryToTuneBranch()
153   case AArch64::ADDWrr:  in tryToTuneBranch()
154   case AArch64::ADDWrs:  in tryToTuneBranch()
155   case AArch64::ADDWrx:  in tryToTuneBranch()
156   case AArch64::ANDWri:  in tryToTuneBranch()
157   case AArch64::ANDWrr:  in tryToTuneBranch()
158   case AArch64::ANDWrs:  in tryToTuneBranch()
159   case AArch64::BICWrr:  in tryToTuneBranch()
160   case AArch64::BICWrs:  in tryToTuneBranch()
161   case AArch64::SUBWri:  in tryToTuneBranch()
162   case AArch64::SUBWrr:  in tryToTuneBranch()
163   case AArch64::SUBWrs:  in tryToTuneBranch()
164   case AArch64::SUBWrx:  in tryToTuneBranch()
167   case AArch64::ADDSWri:  in tryToTuneBranch()
168   case AArch64::ADDSWrr:  in tryToTuneBranch()
169   case AArch64::ADDSWrs:  in tryToTuneBranch()
170   case AArch64::ADDSWrx:  in tryToTuneBranch()
171   case AArch64::ANDSWri:  in tryToTuneBranch()
172   case AArch64::ANDSWrr:  in tryToTuneBranch()
173   case AArch64::ANDSWrs:  in tryToTuneBranch()
174   case AArch64::BICSWrr:  in tryToTuneBranch()
175   case AArch64::BICSWrs:  in tryToTuneBranch()
176   case AArch64::SUBSWri:  in tryToTuneBranch()
177   case AArch64::SUBSWrr:  in tryToTuneBranch()
178   case AArch64::SUBSWrs:  in tryToTuneBranch()
179   case AArch64::SUBSWrx:  in tryToTuneBranch()
184     case AArch64::CBZW:  in tryToTuneBranch()
185     case AArch64::CBNZW:  in tryToTuneBranch()
186     case AArch64::TBZW:  in tryToTuneBranch()
187     case AArch64::TBNZW:  in tryToTuneBranch()
189       if ((MIOpc == AArch64::TBZW || MIOpc == AArch64::TBNZW) &&  in tryToTuneBranch()
208   case AArch64::ADDXri:  in tryToTuneBranch()
209   case AArch64::ADDXrr:  in tryToTuneBranch()
210   case AArch64::ADDXrs:  in tryToTuneBranch()
211   case AArch64::ADDXrx:  in tryToTuneBranch()
212   case AArch64::ANDXri:  in tryToTuneBranch()
213   case AArch64::ANDXrr:  in tryToTuneBranch()
214   case AArch64::ANDXrs:  in tryToTuneBranch()
215   case AArch64::BICXrr:  in tryToTuneBranch()
216   case AArch64::BICXrs:  in tryToTuneBranch()
217   case AArch64::SUBXri:  in tryToTuneBranch()
218   case AArch64::SUBXrr:  in tryToTuneBranch()
219   case AArch64::SUBXrs:  in tryToTuneBranch()
220   case AArch64::SUBXrx:  in tryToTuneBranch()
223   case AArch64::ADDSXri:  in tryToTuneBranch()
224   case AArch64::ADDSXrr:  in tryToTuneBranch()
225   case AArch64::ADDSXrs:  in tryToTuneBranch()
226   case AArch64::ADDSXrx:  in tryToTuneBranch()
227   case AArch64::ANDSXri:  in tryToTuneBranch()
228   case AArch64::ANDSXrr:  in tryToTuneBranch()
229   case AArch64::ANDSXrs:  in tryToTuneBranch()
230   case AArch64::BICSXrr:  in tryToTuneBranch()
231   case AArch64::BICSXrs:  in tryToTuneBranch()
232   case AArch64::SUBSXri:  in tryToTuneBranch()
233   case AArch64::SUBSXrr:  in tryToTuneBranch()
234   case AArch64::SUBSXrs:  in tryToTuneBranch()
235   case AArch64::SUBSXrx:  in tryToTuneBranch()
240     case AArch64::CBZX:  in tryToTuneBranch()
241     case AArch64::CBNZX:  in tryToTuneBranch()
242     case AArch64::TBZX:  in tryToTuneBranch()
243     case AArch64::TBNZX: {  in tryToTuneBranch()
245       if ((MIOpc == AArch64::TBZX || MIOpc == AArch64::TBNZX) &&  in tryToTuneBranch()
286       dbgs() << "********** AArch64 Conditional Branch Tuning  **********\n"  in runOnMachineFunction()
300       case AArch64::CBZW:  in runOnMachineFunction()
301       case AArch64::CBZX:  in runOnMachineFunction()
302       case AArch64::CBNZW:  in runOnMachineFunction()
303       case AArch64::CBNZX:  in runOnMachineFunction()
304       case AArch64::TBZW:  in runOnMachineFunction()
305       case AArch64::TBZX:  in runOnMachineFunction()
306       case AArch64::TBNZW:  in runOnMachineFunction()
307       case AArch64::TBNZX:  in runOnMachineFunction()