diff options
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp | 64 | ||||
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZInstrInfo.h | 2 |
2 files changed, 66 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp index e5a7fd45bf0..46db94e4c31 100644 --- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp +++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp @@ -182,6 +182,70 @@ SystemZInstrInfo::isMoveInstr(const MachineInstr& MI, } } +unsigned SystemZInstrInfo::isLoadFromStackSlot(const MachineInstr *MI, + int &FrameIndex) const { + switch (MI->getOpcode()) { + default: break; + case SystemZ::MOV32rm: + case SystemZ::MOV32rmy: + case SystemZ::MOV64rm: + case SystemZ::MOVSX32rm8: + case SystemZ::MOVSX32rm16y: + case SystemZ::MOVSX64rm8: + case SystemZ::MOVSX64rm16: + case SystemZ::MOVSX64rm32: + case SystemZ::MOVZX32rm8: + case SystemZ::MOVZX32rm16: + case SystemZ::MOVZX64rm8: + case SystemZ::MOVZX64rm16: + case SystemZ::MOVZX64rm32: + case SystemZ::FMOV32rm: + case SystemZ::FMOV32rmy: + case SystemZ::FMOV64rm: + case SystemZ::FMOV64rmy: + if (MI->getOperand(1).isFI() && + MI->getOperand(2).isImm() && MI->getOperand(3).isReg() && + MI->getOperand(2).getImm() == 0 && MI->getOperand(3).getReg() == 0) { + FrameIndex = MI->getOperand(1).getIndex(); + return MI->getOperand(0).getReg(); + } + break; + } + return 0; +} + +unsigned SystemZInstrInfo::isStoreToStackSlot(const MachineInstr *MI, + int &FrameIndex) const { + switch (MI->getOpcode()) { + default: break; + case SystemZ::MOV32mr: + case SystemZ::MOV32mry: + case SystemZ::MOV64mr: + case SystemZ::MOV32m8r: + case SystemZ::MOV32m8ry: + case SystemZ::MOV32m16r: + case SystemZ::MOV32m16ry: + case SystemZ::MOV64m8r: + case SystemZ::MOV64m8ry: + case SystemZ::MOV64m16r: + case SystemZ::MOV64m16ry: + case SystemZ::MOV64m32r: + case SystemZ::MOV64m32ry: + case SystemZ::FMOV32mr: + case SystemZ::FMOV32mry: + case SystemZ::FMOV64mr: + case SystemZ::FMOV64mry: + if (MI->getOperand(0).isFI() && + MI->getOperand(1).isImm() && MI->getOperand(2).isReg() && + MI->getOperand(1).getImm() == 0 && MI->getOperand(2).getReg() == 0) { + FrameIndex = MI->getOperand(0).getIndex(); + return MI->getOperand(3).getReg(); + } + break; + } + return 0; +} + bool SystemZInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.h b/llvm/lib/Target/SystemZ/SystemZInstrInfo.h index 0634aa99ead..2bcdb2e55c4 100644 --- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.h +++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.h @@ -68,6 +68,8 @@ public: bool isMoveInstr(const MachineInstr& MI, unsigned &SrcReg, unsigned &DstReg, unsigned &SrcSubIdx, unsigned &DstSubIdx) const; + unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const; + unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const; virtual void storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, |
