X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMips%2FMipsInstrInfo.h;h=08efc350904665c1a47d22666a053bb708f96e05;hb=4aad126e378dba040c793d735e802e3be6aeccbe;hp=ebb9f8ab8be85f648527942b5cc0a0eb42e58d98;hpb=23ed52752bb40a9085c9d36bbc6603972c3e0080;p=oota-llvm.git diff --git a/lib/Target/Mips/MipsInstrInfo.h b/lib/Target/Mips/MipsInstrInfo.h index ebb9f8ab8be..08efc350904 100644 --- a/lib/Target/Mips/MipsInstrInfo.h +++ b/lib/Target/Mips/MipsInstrInfo.h @@ -1,4 +1,4 @@ -//===- MipsInstrInfo.h - Mips Instruction Information -----------*- C++ -*-===// +//===-- MipsInstrInfo.h - Mips Instruction Information ----------*- C++ -*-===// // // The LLVM Compiler Infrastructure // @@ -9,212 +9,143 @@ // // This file contains the Mips implementation of the TargetInstrInfo class. // +// FIXME: We need to override TargetInstrInfo::getInlineAsmLength method in +// order for MipsLongBranch pass to work correctly when the code has inline +// assembly. The returned value doesn't have to be the asm instruction's exact +// size in bytes; MipsLongBranch only expects it to be the correct upper bound. //===----------------------------------------------------------------------===// -#ifndef MIPSINSTRUCTIONINFO_H -#define MIPSINSTRUCTIONINFO_H +#ifndef LLVM_LIB_TARGET_MIPS_MIPSINSTRINFO_H +#define LLVM_LIB_TARGET_MIPS_MIPSINSTRINFO_H #include "Mips.h" +#include "MipsAnalyzeImmediate.h" +#include "MipsRegisterInfo.h" +#include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Target/TargetInstrInfo.h" -#include "MipsRegisterInfo.h" -namespace llvm { +#define GET_INSTRINFO_HEADER +#include "MipsGenInstrInfo.inc" -namespace Mips { +namespace llvm { +class MipsSubtarget; +class MipsInstrInfo : public MipsGenInstrInfo { + virtual void anchor(); +protected: + const MipsSubtarget &Subtarget; + unsigned UncondBrOpc; - // Mips Branch Codes - enum FPBranchCode { - BRANCH_F, - BRANCH_T, - BRANCH_FL, - BRANCH_TL, - BRANCH_INVALID +public: + enum BranchType { + BT_None, // Couldn't analyze branch. + BT_NoBranch, // No branches found. + BT_Uncond, // One unconditional branch. + BT_Cond, // One conditional branch. + BT_CondUncond, // A conditional branch followed by an unconditional branch. + BT_Indirect // One indirct branch. }; - // Mips Condition Codes - enum CondCode { - // To be used with float branch True - FCOND_F, - FCOND_UN, - FCOND_EQ, - FCOND_UEQ, - FCOND_OLT, - FCOND_ULT, - FCOND_OLE, - FCOND_ULE, - FCOND_SF, - FCOND_NGLE, - FCOND_SEQ, - FCOND_NGL, - FCOND_LT, - FCOND_NGE, - FCOND_LE, - FCOND_NGT, - - // To be used with float branch False - // This conditions have the same mnemonic as the - // above ones, but are used with a branch False; - FCOND_T, - FCOND_OR, - FCOND_NEQ, - FCOND_OGL, - FCOND_UGE, - FCOND_OGE, - FCOND_UGT, - FCOND_OGT, - FCOND_ST, - FCOND_GLE, - FCOND_SNE, - FCOND_GL, - FCOND_NLT, - FCOND_GE, - FCOND_NLE, - FCOND_GT, - - // Only integer conditions - COND_E, - COND_GZ, - COND_GEZ, - COND_LZ, - COND_LEZ, - COND_NE, - COND_INVALID - }; - - // Turn condition code into conditional branch opcode. - unsigned GetCondBranchFromCond(CondCode CC); - - /// GetOppositeBranchCondition - Return the inverse of the specified cond, - /// e.g. turning COND_E to COND_NE. - CondCode GetOppositeBranchCondition(Mips::CondCode CC); - - /// MipsCCToString - Map each FP condition code to its string - inline static const char *MipsFCCToString(Mips::CondCode CC) - { - switch (CC) { - default: llvm_unreachable("Unknown condition code"); - case FCOND_F: - case FCOND_T: return "f"; - case FCOND_UN: - case FCOND_OR: return "un"; - case FCOND_EQ: - case FCOND_NEQ: return "eq"; - case FCOND_UEQ: - case FCOND_OGL: return "ueq"; - case FCOND_OLT: - case FCOND_UGE: return "olt"; - case FCOND_ULT: - case FCOND_OGE: return "ult"; - case FCOND_OLE: - case FCOND_UGT: return "ole"; - case FCOND_ULE: - case FCOND_OGT: return "ule"; - case FCOND_SF: - case FCOND_ST: return "sf"; - case FCOND_NGLE: - case FCOND_GLE: return "ngle"; - case FCOND_SEQ: - case FCOND_SNE: return "seq"; - case FCOND_NGL: - case FCOND_GL: return "ngl"; - case FCOND_LT: - case FCOND_NLT: return "lt"; - case FCOND_NGE: - case FCOND_GE: return "ge"; - case FCOND_LE: - case FCOND_NLE: return "nle"; - case FCOND_NGT: - case FCOND_GT: return "gt"; - } - } -} + explicit MipsInstrInfo(const MipsSubtarget &STI, unsigned UncondBrOpc); -class MipsInstrInfo : public TargetInstrInfoImpl { - MipsTargetMachine &TM; - const MipsRegisterInfo RI; -public: - explicit MipsInstrInfo(MipsTargetMachine &TM); + static const MipsInstrInfo *create(MipsSubtarget &STI); + + /// Branch Analysis + bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, + MachineBasicBlock *&FBB, + SmallVectorImpl &Cond, + bool AllowModify) const override; + + unsigned RemoveBranch(MachineBasicBlock &MBB) const override; + + unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, + MachineBasicBlock *FBB, ArrayRef Cond, + DebugLoc DL) const override; + + bool + ReverseBranchCondition(SmallVectorImpl &Cond) const override; + + BranchType AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, + MachineBasicBlock *&FBB, + SmallVectorImpl &Cond, + bool AllowModify, + SmallVectorImpl &BranchInstrs) const; + + /// Insert nop instruction when hazard condition is found + void insertNoop(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI) const override; /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As /// such, whenever a client has an instance of instruction info, it should /// always be able to get register info as well (through this method). /// - virtual const MipsRegisterInfo &getRegisterInfo() const { return RI; } - - /// Return true if the instruction is a register to register move and return - /// the source and dest operands and their sub-register indices by reference. - virtual bool isMoveInstr(const MachineInstr &MI, - unsigned &SrcReg, unsigned &DstReg, - unsigned &SrcSubIdx, unsigned &DstSubIdx) const; - - /// isLoadFromStackSlot - If the specified machine instruction is a direct - /// load from a stack slot, return the virtual or physical register number of - /// the destination along with the FrameIndex of the loaded stack slot. If - /// not, return 0. This predicate must return 0 if the instruction has - /// any side effects other than loading from the stack slot. - virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, - int &FrameIndex) const; - - /// isStoreToStackSlot - If the specified machine instruction is a direct - /// store to a stack slot, return the virtual or physical register number of - /// the source reg along with the FrameIndex of the loaded stack slot. If - /// not, return 0. This predicate must return 0 if the instruction has - /// any side effects other than storing to the stack slot. - virtual unsigned isStoreToStackSlot(const MachineInstr *MI, - int &FrameIndex) const; - - /// Branch Analysis - virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, - MachineBasicBlock *&FBB, - SmallVectorImpl &Cond, - bool AllowModify) const; - virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const; - virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, - MachineBasicBlock *FBB, - const SmallVectorImpl &Cond) const; - virtual bool copyRegToReg(MachineBasicBlock &MBB, - MachineBasicBlock::iterator I, - unsigned DestReg, unsigned SrcReg, - const TargetRegisterClass *DestRC, - const TargetRegisterClass *SrcRC) const; - virtual void storeRegToStackSlot(MachineBasicBlock &MBB, - MachineBasicBlock::iterator MBBI, - unsigned SrcReg, bool isKill, int FrameIndex, - const TargetRegisterClass *RC) const; - - virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, - MachineBasicBlock::iterator MBBI, - unsigned DestReg, int FrameIndex, - const TargetRegisterClass *RC) const; - - virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, - MachineInstr* MI, - const SmallVectorImpl &Ops, - int FrameIndex) const; - - virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, - MachineInstr* MI, - const SmallVectorImpl &Ops, - MachineInstr* LoadMI) const { - return 0; + virtual const MipsRegisterInfo &getRegisterInfo() const = 0; + + virtual unsigned getOppositeBranchOpc(unsigned Opc) const = 0; + + /// Return the number of bytes of code the specified instruction may be. + unsigned GetInstSizeInBytes(const MachineInstr *MI) const; + + void storeRegToStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned SrcReg, bool isKill, int FrameIndex, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI) const override { + storeRegToStack(MBB, MBBI, SrcReg, isKill, FrameIndex, RC, TRI, 0); } - - virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const; - virtual - bool ReverseBranchCondition(SmallVectorImpl &Cond) const; - /// Insert nop instruction when hazard condition is found - virtual void insertNoop(MachineBasicBlock &MBB, - MachineBasicBlock::iterator MI) const; + void loadRegFromStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned DestReg, int FrameIndex, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI) const override { + loadRegFromStack(MBB, MBBI, DestReg, FrameIndex, RC, TRI, 0); + } - /// getGlobalBaseReg - Return a virtual register initialized with the - /// the global base register value. Output instructions required to - /// initialize the register in the function entry block, if necessary. - /// - unsigned getGlobalBaseReg(MachineFunction *MF) const; + virtual void storeRegToStack(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned SrcReg, bool isKill, int FrameIndex, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI, + int64_t Offset) const = 0; + + virtual void loadRegFromStack(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned DestReg, int FrameIndex, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI, + int64_t Offset) const = 0; + + virtual void adjustStackPtr(unsigned SP, int64_t Amount, + MachineBasicBlock &MBB, + MachineBasicBlock::iterator I) const = 0; + + /// Create an instruction which has the same operands and memory operands + /// as MI but has a new opcode. + MachineInstrBuilder genInstrWithNewOpc(unsigned NewOpc, + MachineBasicBlock::iterator I) const; + +protected: + bool isZeroImm(const MachineOperand &op) const; + + MachineMemOperand *GetMemOperand(MachineBasicBlock &MBB, int FI, + unsigned Flag) const; + +private: + virtual unsigned getAnalyzableBrOpc(unsigned Opc) const = 0; + + void AnalyzeCondBr(const MachineInstr *Inst, unsigned Opc, + MachineBasicBlock *&BB, + SmallVectorImpl &Cond) const; + + void BuildCondBr(MachineBasicBlock &MBB, MachineBasicBlock *TBB, DebugLoc DL, + ArrayRef Cond) const; }; +/// Create MipsInstrInfo objects. +const MipsInstrInfo *createMips16InstrInfo(const MipsSubtarget &STI); +const MipsInstrInfo *createMipsSEInstrInfo(const MipsSubtarget &STI); + } #endif