diff options
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp | 18 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/ARMBaseInstrInfo.h | 2 | ||||
| -rw-r--r-- | llvm/lib/Target/R600/R600InstrInfo.cpp | 4 | ||||
| -rw-r--r-- | llvm/lib/Target/R600/R600InstrInfo.h | 2 |
4 files changed, 26 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp index 321c3f4b029..4076e3b1b15 100644 --- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp +++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp @@ -3669,6 +3669,24 @@ ARMBaseInstrInfo::getOperandLatency(const InstrItineraryData *ItinData, return Latency; } +unsigned ARMBaseInstrInfo::getPredicationCost(const MachineInstr *MI) const { + if (MI->isCopyLike() || MI->isInsertSubreg() || + MI->isRegSequence() || MI->isImplicitDef()) + return 0; + + if (MI->isBundle()) + return 0; + + const MCInstrDesc &MCID = MI->getDesc(); + + if (MCID.isCall() || MCID.hasImplicitDefOfPhysReg(ARM::CPSR)) { + // When predicated, CPSR is an additional source operand for CPSR updating + // instructions, this apparently increases their latencies. + return 1; + } + return 0; +} + unsigned ARMBaseInstrInfo::getInstrLatency(const InstrItineraryData *ItinData, const MachineInstr *MI, unsigned *PredCost) const { diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.h b/llvm/lib/Target/ARM/ARMBaseInstrInfo.h index 96f8637d7b3..8ab06fd8c22 100644 --- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.h +++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.h @@ -264,6 +264,8 @@ private: const MCInstrDesc &UseMCID, unsigned UseIdx, unsigned UseAlign) const; + unsigned getPredicationCost(const MachineInstr *MI) const; + unsigned getInstrLatency(const InstrItineraryData *ItinData, const MachineInstr *MI, unsigned *PredCost = 0) const; diff --git a/llvm/lib/Target/R600/R600InstrInfo.cpp b/llvm/lib/Target/R600/R600InstrInfo.cpp index 93931e48ae2..92aae63494b 100644 --- a/llvm/lib/Target/R600/R600InstrInfo.cpp +++ b/llvm/lib/Target/R600/R600InstrInfo.cpp @@ -989,6 +989,10 @@ R600InstrInfo::PredicateInstruction(MachineInstr *MI, return false; } +unsigned int R600InstrInfo::getPredicationCost(const MachineInstr *) const { + return 2; +} + unsigned int R600InstrInfo::getInstrLatency(const InstrItineraryData *ItinData, const MachineInstr *MI, unsigned *PredCost) const { diff --git a/llvm/lib/Target/R600/R600InstrInfo.h b/llvm/lib/Target/R600/R600InstrInfo.h index 0d1ffc80026..235a8751ac7 100644 --- a/llvm/lib/Target/R600/R600InstrInfo.h +++ b/llvm/lib/Target/R600/R600InstrInfo.h @@ -181,6 +181,8 @@ namespace llvm { bool PredicateInstruction(MachineInstr *MI, const SmallVectorImpl<MachineOperand> &Pred) const; + unsigned int getPredicationCost(const MachineInstr *) const; + unsigned int getInstrLatency(const InstrItineraryData *ItinData, const MachineInstr *MI, unsigned *PredCost = 0) const; |
