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, |
42 | InlineAsm::ConstraintCode ConstraintID, |
43 | std::vector<SDValue> &OutOps) override; |
44 | |
45 | bool SelectBaseAddr(SDValue Addr, SDValue &Base); |
46 | bool SelectAddrConstant(SDValue Addr, SDValue &Base, SDValue &Offset); |
47 | bool selectNonFIBaseAddr(SDValue Addr, SDValue &Base); |
48 | |
49 | bool selectShiftMask(SDValue N, unsigned ShiftWidth, SDValue &ShAmt); |
50 | bool selectShiftMaskGRLen(SDValue N, SDValue &ShAmt) { |
51 | return selectShiftMask(N, ShiftWidth: Subtarget->getGRLen(), ShAmt); |
52 | } |
53 | bool selectShiftMask32(SDValue N, SDValue &ShAmt) { |
54 | return selectShiftMask(N, ShiftWidth: 32, ShAmt); |
55 | } |
56 | |
57 | bool selectSExti32(SDValue N, SDValue &Val); |
58 | bool selectZExti32(SDValue N, SDValue &Val); |
59 | |
60 | bool selectVSplat(SDNode *N, APInt &Imm, unsigned MinSizeInBits) const; |
61 | |
62 | template <unsigned ImmSize, bool IsSigned = false> |
63 | bool selectVSplatImm(SDValue N, SDValue &SplatVal); |
64 | |
65 | bool selectVSplatUimmInvPow2(SDValue N, SDValue &SplatImm) const; |
66 | bool selectVSplatUimmPow2(SDValue N, SDValue &SplatImm) const; |
67 | |
68 | // Include the pieces autogenerated from the target description. |
69 | #include "LoongArchGenDAGISel.inc" |
70 | }; |
71 | |
72 | } // end namespace llvm |
73 | |
74 | #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHISELDAGTODAG_H |
75 | |