diff options
Diffstat (limited to 'llvm/lib/Target/X86')
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.cpp | 18 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.h | 10 |
2 files changed, 24 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86RegisterInfo.cpp b/llvm/lib/Target/X86/X86RegisterInfo.cpp index 7788088685b..e88c050feba 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.cpp +++ b/llvm/lib/Target/X86/X86RegisterInfo.cpp @@ -806,7 +806,7 @@ void X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB, } void X86RegisterInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg, - SmallVectorImpl<MachineOperand> Addr, + SmallVectorImpl<MachineOperand> &Addr, const TargetRegisterClass *RC, SmallVectorImpl<MachineInstr*> &NewMIs) const { unsigned Opc = getStoreRegOpcode(RC); @@ -862,7 +862,7 @@ void X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB, } void X86RegisterInfo::loadRegFromAddr(MachineFunction &MF, unsigned DestReg, - SmallVectorImpl<MachineOperand> Addr, + SmallVectorImpl<MachineOperand> &Addr, const TargetRegisterClass *RC, SmallVectorImpl<MachineInstr*> &NewMIs) const { unsigned Opc = getLoadRegOpcode(RC); @@ -1273,6 +1273,20 @@ X86RegisterInfo::unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N, return true; } +unsigned X86RegisterInfo::getOpcodeAfterMemoryUnfold(unsigned Opc, + bool UnfoldLoad, bool UnfoldStore) const { + DenseMap<unsigned*, std::pair<unsigned,unsigned> >::iterator I = + MemOp2RegOpTable.find((unsigned*)Opc); + if (I == MemOp2RegOpTable.end()) + return 0; + bool HasLoad = I->second.second & (1 << 4); + bool HasStore = I->second.second & (1 << 5); + if (UnfoldLoad && !HasLoad) + return 0; + if (UnfoldStore && !HasStore) + return 0; + return I->second.first; +} const unsigned * X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const { diff --git a/llvm/lib/Target/X86/X86RegisterInfo.h b/llvm/lib/Target/X86/X86RegisterInfo.h index 76045476c2a..c21868c626f 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.h +++ b/llvm/lib/Target/X86/X86RegisterInfo.h @@ -89,7 +89,7 @@ public: const TargetRegisterClass *RC) const; void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, - SmallVectorImpl<MachineOperand> Addr, + SmallVectorImpl<MachineOperand> &Addr, const TargetRegisterClass *RC, SmallVectorImpl<MachineInstr*> &NewMIs) const; @@ -99,7 +99,7 @@ public: const TargetRegisterClass *RC) const; void loadRegFromAddr(MachineFunction &MF, unsigned DestReg, - SmallVectorImpl<MachineOperand> Addr, + SmallVectorImpl<MachineOperand> &Addr, const TargetRegisterClass *RC, SmallVectorImpl<MachineInstr*> &NewMIs) const; @@ -142,6 +142,12 @@ public: bool unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N, SmallVectorImpl<SDNode*> &NewNodes) const; + /// getOpcodeAfterMemoryUnfold - Returns the opcode of the would be new + /// instruction after load / store are unfolded from the specified opcode. + /// It returns zero if the specified unfolding is impossible. + unsigned getOpcodeAfterMemoryUnfold(unsigned Opc, + bool UnfoldLoad, bool UnfoldStore) const; + /// getCalleeSavedRegs - Return a null-terminated list of all of the /// callee-save registers on this target. const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const; |
