1 //=- LoongArchISelDAGToDAG.h - A dag to dag inst selector for LoongArch ---===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file defines an instruction selector for the LoongArch target. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHISELDAGTODAG_H 14 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHISELDAGTODAG_H 15 16 #include "LoongArch.h" 17 #include "LoongArchTargetMachine.h" 18 #include "llvm/CodeGen/SelectionDAGISel.h" 19 20 // LoongArch-specific code to select LoongArch machine instructions for 21 // SelectionDAG operations. 22 namespace llvm { 23 class LoongArchDAGToDAGISel : public SelectionDAGISel { 24 const LoongArchSubtarget *Subtarget = nullptr; 25 26 public: 27 static char ID; 28 29 LoongArchDAGToDAGISel() = delete; 30 31 explicit LoongArchDAGToDAGISel(LoongArchTargetMachine &TM) 32 : SelectionDAGISel(ID, TM) {} 33 34 bool runOnMachineFunction(MachineFunction &MF) override { 35 Subtarget = &MF.getSubtarget<LoongArchSubtarget>(); 36 return SelectionDAGISel::runOnMachineFunction(MF); 37 } 38 39 void Select(SDNode *Node) override; 40 41 bool SelectInlineAsmMemoryOperand(const SDValue &Op, unsigned ConstraintID, 42 std::vector<SDValue> &OutOps) override; 43 44 bool SelectBaseAddr(SDValue Addr, SDValue &Base); 45 bool SelectAddrConstant(SDValue Addr, SDValue &Base, SDValue &Offset); 46 bool selectNonFIBaseAddr(SDValue Addr, SDValue &Base); 47 48 bool selectShiftMask(SDValue N, unsigned ShiftWidth, SDValue &ShAmt); 49 bool selectShiftMaskGRLen(SDValue N, SDValue &ShAmt) { 50 return selectShiftMask(N, Subtarget->getGRLen(), ShAmt); 51 } 52 bool selectShiftMask32(SDValue N, SDValue &ShAmt) { 53 return selectShiftMask(N, 32, ShAmt); 54 } 55 56 bool selectSExti32(SDValue N, SDValue &Val); 57 bool selectZExti32(SDValue N, SDValue &Val); 58 59 // Include the pieces autogenerated from the target description. 60 #include "LoongArchGenDAGISel.inc" 61 }; 62 63 } // end namespace llvm 64 65 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHISELDAGTODAG_H 66