llvm::NVPTXInstrInfo Class Reference

#include "Target/NVPTX/NVPTXInstrInfo.h"

Inheritance diagram for llvm::NVPTXInstrInfo:

Public Member Functions
	NVPTXInstrInfo ()
const NVPTXRegisterInfo &	getRegisterInfo () const
void	copyPhysReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const DebugLoc &DL, MCRegister DestReg, MCRegister SrcReg, bool KillSrc) const override
bool	analyzeBranch (MachineBasicBlock &MBB, MachineBasicBlock *&TBB, MachineBasicBlock *&FBB, SmallVectorImpl< MachineOperand > &Cond, bool AllowModify) const override
	analyzeBranch - Analyze the branching code at the end of MBB, returning true if it cannot be understood (e.g.
unsigned	removeBranch (MachineBasicBlock &MBB, int *BytesRemoved=nullptr) const override
unsigned	insertBranch (MachineBasicBlock &MBB, MachineBasicBlock *TBB, MachineBasicBlock *FBB, ArrayRef< MachineOperand > Cond, const DebugLoc &DL, int *BytesAdded=nullptr) const override

Detailed Description

Definition at line 25 of file NVPTXInstrInfo.h.

Constructor & Destructor Documentation

NVPTXInstrInfo()

NVPTXInstrInfo::NVPTXInstrInfo ( )

explicit

Definition at line 30 of file NVPTXInstrInfo.cpp.

Member Function Documentation

analyzeBranch()

bool NVPTXInstrInfo::analyzeBranch ( MachineBasicBlock &  MBB, MachineBasicBlock *&  TBB, MachineBasicBlock *&  FBB, SmallVectorImpl< MachineOperand > &  Cond, bool  AllowModify  ) const

override

analyzeBranch - Analyze the branching code at the end of MBB, returning true if it cannot be understood (e.g.

it's a switch dispatch or isn't implemented for a target). Upon success, this returns false and returns with the following information in various cases:

1. If this block ends with no branches (it just falls through to its succ) just return false, leaving TBB/FBB null.
2. If this block ends with only an unconditional branch, it sets TBB to be the destination block.
3. If this block ends with an conditional branch and it falls through to an successor block, it sets TBB to be the branch destination block and a list of operands that evaluate the condition. These operands can be passed to other TargetInstrInfo methods to create new branches.
4. If this block ends with an conditional branch and an unconditional block, it returns the 'true' destination in TBB, the 'false' destination in FBB, and a list of operands that evaluate the condition. These operands can be passed to other TargetInstrInfo methods to create new branches.

Note that removeBranch and insertBranch must be implemented to support cases where this method returns success.

Definition at line 92 of file NVPTXInstrInfo.cpp.

References llvm::MachineBasicBlock::begin(), Cond, llvm::MachineBasicBlock::end(), llvm::MachineOperand::getMBB(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), I, MBB, and TBB.

copyPhysReg()

void NVPTXInstrInfo::copyPhysReg ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  I, const DebugLoc &  DL, MCRegister  DestReg, MCRegister  SrcReg, bool  KillSrc  ) const

override

Definition at line 32 of file NVPTXInstrInfo.cpp.

References llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), DL, llvm::get(), llvm::getKillRegState(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), I, llvm_unreachable, MBB, MRI, and llvm::report_fatal_error().

getRegisterInfo()

const NVPTXRegisterInfo & llvm::NVPTXInstrInfo::getRegisterInfo ( ) const

inline

Definition at line 31 of file NVPTXInstrInfo.h.

Referenced by llvm::NVPTXSubtarget::getRegisterInfo().

insertBranch()

unsigned NVPTXInstrInfo::insertBranch ( MachineBasicBlock &  MBB, MachineBasicBlock *  TBB, MachineBasicBlock *  FBB, ArrayRef< MachineOperand >  Cond, const DebugLoc &  DL, int *  BytesAdded = nullptr  ) const

override

Definition at line 177 of file NVPTXInstrInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addMBB(), assert(), llvm::BuildMI(), Cond, DL, llvm::get(), MBB, and TBB.

removeBranch()

unsigned NVPTXInstrInfo::removeBranch ( MachineBasicBlock &  MBB, int *  BytesRemoved = nullptr  ) const

override

Definition at line 151 of file NVPTXInstrInfo.cpp.

References assert(), llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), I, and MBB.

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The documentation for this class was generated from the following files:

• lib/Target/NVPTX/NVPTXInstrInfo.h
• lib/Target/NVPTX/NVPTXInstrInfo.cpp