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d593a77b4c
derived class MipsSETargetLowering. We shouldn't be generating madd/msub nodes if target is Mips16, since Mips16 doesn't have support for multipy-add/sub instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178404 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
//===-- MipsSEISelLowering.h - MipsSE 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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// Subclass of MipsTargetLowering specialized for mips32/64.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MipsSEISELLOWERING_H
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#define MipsSEISELLOWERING_H
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#include "MipsISelLowering.h"
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#include "MipsRegisterInfo.h"
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namespace llvm {
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class MipsSETargetLowering : public MipsTargetLowering {
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public:
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explicit MipsSETargetLowering(MipsTargetMachine &TM);
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virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const;
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virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
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virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
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virtual MachineBasicBlock *
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EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *MBB) const;
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virtual const TargetRegisterClass *getRepRegClassFor(MVT VT) const {
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if (VT == MVT::Untyped)
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return Subtarget->hasDSP() ? &Mips::ACRegsDSPRegClass :
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&Mips::ACRegsRegClass;
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return TargetLowering::getRepRegClassFor(VT);
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}
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private:
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virtual bool
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isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
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unsigned NextStackOffset,
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const MipsFunctionInfo& FI) const;
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virtual void
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getOpndList(SmallVectorImpl<SDValue> &Ops,
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std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
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bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
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CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const;
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SDValue lowerMulDiv(SDValue Op, unsigned NewOpc, bool HasLo, bool HasHi,
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SelectionDAG &DAG) const;
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MachineBasicBlock *emitBPOSGE32(MachineInstr *MI,
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MachineBasicBlock *BB) const;
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};
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}
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#endif // MipsSEISELLOWERING_H
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