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 LoongArchDAGToDAGISel() = delete; 28 29 explicit LoongArchDAGToDAGISel(LoongArchTargetMachine &TM) 30 : SelectionDAGISel(TM) {} 31 32 bool runOnMachineFunction(MachineFunction &MF) override { 33 Subtarget = &MF.getSubtarget<LoongArchSubtarget>(); 34 return SelectionDAGISel::runOnMachineFunction(MF); 35 } 36 37 void Select(SDNode *Node) override; 38 39 bool SelectInlineAsmMemoryOperand(const SDValue &Op, 40 InlineAsm::ConstraintCode ConstraintID, 41 std::vector<SDValue> &OutOps) override; 42 43 bool SelectBaseAddr(SDValue Addr, SDValue &Base); 44 bool SelectAddrConstant(SDValue Addr, SDValue &Base, SDValue &Offset); 45 bool selectNonFIBaseAddr(SDValue Addr, SDValue &Base); 46 bool SelectAddrRegImm12(SDValue Addr, SDValue &Base, SDValue &Offset); 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 bool selectVSplat(SDNode *N, APInt &Imm, unsigned MinSizeInBits) const; 60 61 template <unsigned ImmSize, bool IsSigned = false> 62 bool selectVSplatImm(SDValue N, SDValue &SplatVal); 63 64 bool selectVSplatUimmInvPow2(SDValue N, SDValue &SplatImm) const; 65 bool selectVSplatUimmPow2(SDValue N, SDValue &SplatImm) const; 66 67 // Include the pieces autogenerated from the target description. 68 #include "LoongArchGenDAGISel.inc" 69 }; 70 71 class LoongArchDAGToDAGISelLegacy : public SelectionDAGISelLegacy { 72 public: 73 static char ID; 74 explicit LoongArchDAGToDAGISelLegacy(LoongArchTargetMachine &TM); 75 }; 76 77 } // end namespace llvm 78 79 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHISELDAGTODAG_H 80