forked from OSchip/llvm-project
69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
//===-- ARMSelectionDAGInfo.h - ARM SelectionDAG Info -----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the ARM subclass for SelectionDAGTargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_ARMSELECTIONDAGINFO_H
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#define LLVM_LIB_TARGET_ARM_ARMSELECTIONDAGINFO_H
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#include "MCTargetDesc/ARMAddressingModes.h"
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#include "llvm/CodeGen/RuntimeLibcalls.h"
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#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
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namespace llvm {
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namespace ARM_AM {
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static inline ShiftOpc getShiftOpcForNode(unsigned Opcode) {
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switch (Opcode) {
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default: return ARM_AM::no_shift;
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case ISD::SHL: return ARM_AM::lsl;
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case ISD::SRL: return ARM_AM::lsr;
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case ISD::SRA: return ARM_AM::asr;
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case ISD::ROTR: return ARM_AM::ror;
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//case ISD::ROTL: // Only if imm -> turn into ROTR.
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// Can't handle RRX here, because it would require folding a flag into
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// the addressing mode. :( This causes us to miss certain things.
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//case ARMISD::RRX: return ARM_AM::rrx;
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}
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}
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} // end namespace ARM_AM
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class ARMSelectionDAGInfo : public SelectionDAGTargetInfo {
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public:
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SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, const SDLoc &dl,
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SDValue Chain, SDValue Dst, SDValue Src,
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SDValue Size, unsigned Align, bool isVolatile,
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bool AlwaysInline,
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MachinePointerInfo DstPtrInfo,
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MachinePointerInfo SrcPtrInfo) const override;
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SDValue
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EmitTargetCodeForMemmove(SelectionDAG &DAG, const SDLoc &dl, SDValue Chain,
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SDValue Dst, SDValue Src, SDValue Size,
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unsigned Align, bool isVolatile,
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MachinePointerInfo DstPtrInfo,
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MachinePointerInfo SrcPtrInfo) const override;
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// Adjust parameters for memset, see RTABI section 4.3.4
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SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, const SDLoc &dl,
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SDValue Chain, SDValue Op1, SDValue Op2,
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SDValue Op3, unsigned Align, bool isVolatile,
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MachinePointerInfo DstPtrInfo) const override;
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SDValue EmitSpecializedLibcall(SelectionDAG &DAG, const SDLoc &dl,
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SDValue Chain, SDValue Dst, SDValue Src,
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SDValue Size, unsigned Align,
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RTLIB::Libcall LC) const;
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};
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}
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#endif
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