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https://github.com/c64scene-ar/llvm-6502.git
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a2b2200ff8
its fields. This removes false dependencies between DSP instructions which access different fields of the the control register. Implicit register operands are added to instructions RDDSP and WRDSP after instruction selection, depending on the value of the mask operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181041 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
//===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
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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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// Subclass of MipsDAGToDAGISel specialized for mips32/64.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MIPSSEISELDAGTODAG_H
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#define MIPSSEISELDAGTODAG_H
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#include "MipsISelDAGToDAG.h"
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namespace llvm {
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class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
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public:
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explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
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private:
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virtual bool runOnMachineFunction(MachineFunction &MF);
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void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
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MachineFunction &MF);
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bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
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std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, DebugLoc dl,
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EVT Ty, bool HasLo, bool HasHi);
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SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
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DebugLoc DL, SDNode *Node) const;
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virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
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SDValue &Offset) const;
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virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
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SDValue &Offset) const;
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virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
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SDValue &Offset) const;
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virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
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virtual void processFunctionAfterISel(MachineFunction &MF);
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// Insert instructions to initialize the global base register in the
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// first MBB of the function.
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void initGlobalBaseReg(MachineFunction &MF);
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};
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FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
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}
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#endif
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