diff options
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp index c12d02b1793..f094cf18dfd 100644 --- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp +++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp @@ -1191,6 +1191,36 @@ MachineInstr *SystemZInstrInfo::foldMemoryOperandImpl( return BuiltMI; } + if ((Opcode == SystemZ::ALFI && OpNum == 0 && + isInt<8>((int32_t)MI.getOperand(2).getImm())) || + (Opcode == SystemZ::ALGFI && OpNum == 0 && + isInt<8>((int64_t)MI.getOperand(2).getImm()))) { + // AL(G)FI %reg, CONST -> AL(G)SI %mem, CONST + Opcode = (Opcode == SystemZ::ALFI ? SystemZ::ALSI : SystemZ::ALGSI); + MachineInstr *BuiltMI = + BuildMI(*InsertPt->getParent(), InsertPt, MI.getDebugLoc(), get(Opcode)) + .addFrameIndex(FrameIndex) + .addImm(0) + .addImm((int8_t)MI.getOperand(2).getImm()); + transferDeadCC(&MI, BuiltMI); + return BuiltMI; + } + + if ((Opcode == SystemZ::SLFI && OpNum == 0 && + isInt<8>((int32_t)-MI.getOperand(2).getImm())) || + (Opcode == SystemZ::SLGFI && OpNum == 0 && + isInt<8>((int64_t)-MI.getOperand(2).getImm()))) { + // SL(G)FI %reg, CONST -> AL(G)SI %mem, -CONST + Opcode = (Opcode == SystemZ::SLFI ? SystemZ::ALSI : SystemZ::ALGSI); + MachineInstr *BuiltMI = + BuildMI(*InsertPt->getParent(), InsertPt, MI.getDebugLoc(), get(Opcode)) + .addFrameIndex(FrameIndex) + .addImm(0) + .addImm((int8_t)-MI.getOperand(2).getImm()); + transferDeadCC(&MI, BuiltMI); + return BuiltMI; + } + if (Opcode == SystemZ::LGDR || Opcode == SystemZ::LDGR) { bool Op0IsGPR = (Opcode == SystemZ::LGDR); bool Op1IsGPR = (Opcode == SystemZ::LDGR); |
