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87 lines
3.4 KiB
C++
87 lines
3.4 KiB
C++
//===- BlackfinISelLowering.h - Blackfin DAG Lowering Interface -*- 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 interfaces that Blackfin uses to lower LLVM code into a
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// selection DAG.
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//
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//===----------------------------------------------------------------------===//
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#ifndef BLACKFIN_ISELLOWERING_H
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#define BLACKFIN_ISELLOWERING_H
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#include "llvm/Target/TargetLowering.h"
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#include "Blackfin.h"
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namespace llvm {
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namespace BFISD {
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enum {
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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CALL, // A call instruction.
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RET_FLAG, // Return with a flag operand.
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Wrapper // Address wrapper
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};
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}
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class BlackfinTargetLowering : public TargetLowering {
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public:
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BlackfinTargetLowering(TargetMachine &TM);
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virtual MVT getShiftAmountTy(EVT LHSTy) const { return MVT::i16; }
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virtual MVT::SimpleValueType getSetCCResultType(EVT VT) const;
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virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
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virtual void ReplaceNodeResults(SDNode *N,
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SmallVectorImpl<SDValue> &Results,
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SelectionDAG &DAG) const;
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ConstraintType getConstraintType(const std::string &Constraint) const;
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/// Examine constraint string and operand type and determine a weight value.
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/// The operand object must already have been set up with the operand type.
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ConstraintWeight getSingleConstraintMatchWeight(
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AsmOperandInfo &info, const char *constraint) const;
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std::pair<unsigned, const TargetRegisterClass*>
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getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const;
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std::vector<unsigned>
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getRegClassForInlineAsmConstraint(const std::string &Constraint,
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EVT VT) const;
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virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
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const char *getTargetNodeName(unsigned Opcode) const;
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private:
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SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerADDE(SDValue Op, SelectionDAG &DAG) const;
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virtual SDValue
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LowerFormalArguments(SDValue Chain,
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CallingConv::ID CallConv, bool isVarArg,
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const SmallVectorImpl<ISD::InputArg> &Ins,
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DebugLoc dl, SelectionDAG &DAG,
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SmallVectorImpl<SDValue> &InVals) const;
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virtual SDValue
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LowerCall(SDValue Chain, SDValue Callee,
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CallingConv::ID CallConv, bool isVarArg, bool &isTailCall,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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const SmallVectorImpl<SDValue> &OutVals,
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const SmallVectorImpl<ISD::InputArg> &Ins,
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DebugLoc dl, SelectionDAG &DAG,
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SmallVectorImpl<SDValue> &InVals) const;
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virtual SDValue
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LowerReturn(SDValue Chain,
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CallingConv::ID CallConv, bool isVarArg,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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const SmallVectorImpl<SDValue> &OutVals,
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DebugLoc dl, SelectionDAG &DAG) const;
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};
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} // end namespace llvm
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#endif // BLACKFIN_ISELLOWERING_H
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