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69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
//===-- ARMSelectionDAGInfo.h - ARM SelectionDAG Info -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the ARM subclass for TargetSelectionDAGInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ARMSELECTIONDAGINFO_H
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#define ARMSELECTIONDAGINFO_H
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#include "MCTargetDesc/ARMAddressingModes.h"
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#include "llvm/Target/TargetSelectionDAGInfo.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 TargetSelectionDAGInfo {
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/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
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/// make the right decision when generating code for different targets.
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const ARMSubtarget *Subtarget;
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public:
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explicit ARMSelectionDAGInfo(const TargetMachine &TM);
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~ARMSelectionDAGInfo();
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virtual
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SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
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SDValue Chain,
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SDValue Dst, SDValue Src,
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SDValue Size, unsigned Align,
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bool isVolatile, bool AlwaysInline,
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MachinePointerInfo DstPtrInfo,
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MachinePointerInfo SrcPtrInfo) const;
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// Adjust parameters for memset, see RTABI section 4.3.4
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virtual
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SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
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SDValue Chain,
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SDValue Op1, SDValue Op2,
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SDValue Op3, unsigned Align,
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bool isVolatile,
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MachinePointerInfo DstPtrInfo) const;
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};
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}
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#endif
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