diff options
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/ARM/Thumb2InstrInfo.cpp | 42 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/Thumb2InstrInfo.h | 5 |
2 files changed, 0 insertions, 47 deletions
diff --git a/llvm/lib/Target/ARM/Thumb2InstrInfo.cpp b/llvm/lib/Target/ARM/Thumb2InstrInfo.cpp index 2097bb9a93d..e9e20ddd878 100644 --- a/llvm/lib/Target/ARM/Thumb2InstrInfo.cpp +++ b/llvm/lib/Target/ARM/Thumb2InstrInfo.cpp @@ -563,48 +563,6 @@ bool llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, return Offset == 0; } -/// scheduleTwoAddrSource - Schedule the copy / re-mat of the source of the -/// two-addrss instruction inserted by two-address pass. -void -Thumb2InstrInfo::scheduleTwoAddrSource(MachineInstr *SrcMI, - MachineInstr *UseMI, - const TargetRegisterInfo &TRI) const { - if (SrcMI->getOpcode() != ARM::tMOVr || SrcMI->getOperand(1).isKill()) - return; - - unsigned PredReg = 0; - ARMCC::CondCodes CC = getInstrPredicate(UseMI, PredReg); - if (CC == ARMCC::AL || PredReg != ARM::CPSR) - return; - - // Schedule the copy so it doesn't come between previous instructions - // and UseMI which can form an IT block. - unsigned SrcReg = SrcMI->getOperand(1).getReg(); - ARMCC::CondCodes OCC = ARMCC::getOppositeCondition(CC); - MachineBasicBlock *MBB = UseMI->getParent(); - MachineBasicBlock::iterator MBBI = SrcMI; - unsigned NumInsts = 0; - while (--MBBI != MBB->begin()) { - if (MBBI->isDebugValue()) - continue; - - MachineInstr *NMI = &*MBBI; - ARMCC::CondCodes NCC = getInstrPredicate(NMI, PredReg); - if (!(NCC == CC || NCC == OCC) || - NMI->modifiesRegister(SrcReg, &TRI) || - NMI->modifiesRegister(ARM::CPSR, &TRI)) - break; - if (++NumInsts == 4) - // Too many in a row! - return; - } - - if (NumInsts) { - MBB->remove(SrcMI); - MBB->insert(++MBBI, SrcMI); - } -} - ARMCC::CondCodes llvm::getITInstrPredicate(const MachineInstr *MI, unsigned &PredReg) { unsigned Opc = MI->getOpcode(); diff --git a/llvm/lib/Target/ARM/Thumb2InstrInfo.h b/llvm/lib/Target/ARM/Thumb2InstrInfo.h index 0911f8a597c..2cdcd06e935 100644 --- a/llvm/lib/Target/ARM/Thumb2InstrInfo.h +++ b/llvm/lib/Target/ARM/Thumb2InstrInfo.h @@ -57,11 +57,6 @@ public: const TargetRegisterClass *RC, const TargetRegisterInfo *TRI) const; - /// scheduleTwoAddrSource - Schedule the copy / re-mat of the source of the - /// two-addrss instruction inserted by two-address pass. - void scheduleTwoAddrSource(MachineInstr *SrcMI, MachineInstr *UseMI, - const TargetRegisterInfo &TRI) const; - /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As /// such, whenever a client has an instance of instruction info, it should /// always be able to get register info as well (through this method). |
