#include <AntiDepBreaker.h>
Public Types | |
| typedef std::vector< std::pair < MachineInstr *, MachineInstr * > > | DbgValueVector |
Public Member Functions | |
| virtual | ~AntiDepBreaker () |
| virtual void | StartBlock (MachineBasicBlock *BB)=0 |
| Start - Initialize anti-dep breaking for a new basic block. | |
| virtual unsigned | BreakAntiDependencies (const std::vector< SUnit > &SUnits, MachineBasicBlock::iterator Begin, MachineBasicBlock::iterator End, unsigned InsertPosIndex, DbgValueVector &DbgValues)=0 |
| virtual void | Observe (MachineInstr *MI, unsigned Count, unsigned InsertPosIndex)=0 |
| virtual void | FinishBlock ()=0 |
| Finish - Finish anti-dep breaking for a basic block. | |
| void | UpdateDbgValue (MachineInstr *MI, unsigned OldReg, unsigned NewReg) |
Detailed Description
AntiDepBreaker - This class works into conjunction with the post-RA scheduler to rename registers to break register anti-dependencies.
Definition at line 31 of file AntiDepBreaker.h.
Member Typedef Documentation
| typedef std::vector<std::pair<MachineInstr *, MachineInstr *> > llvm::AntiDepBreaker::DbgValueVector |
Definition at line 34 of file AntiDepBreaker.h.
Constructor & Destructor Documentation
| AntiDepBreaker::~AntiDepBreaker | ( | ) | [virtual] |
Definition at line 78 of file PostRASchedulerList.cpp.
Member Function Documentation
| virtual unsigned llvm::AntiDepBreaker::BreakAntiDependencies | ( | const std::vector< SUnit > & | SUnits, |
| MachineBasicBlock::iterator | Begin, | ||
| MachineBasicBlock::iterator | End, | ||
| unsigned | InsertPosIndex, | ||
| DbgValueVector & | DbgValues | ||
| ) | [pure virtual] |
BreakAntiDependencies - Identifiy anti-dependencies within a basic-block region and break them by renaming registers. Return the number of anti-dependencies broken.
Implemented in llvm::AggressiveAntiDepBreaker, and llvm::CriticalAntiDepBreaker.
| virtual void llvm::AntiDepBreaker::FinishBlock | ( | ) | [pure virtual] |
Finish - Finish anti-dep breaking for a basic block.
Implemented in llvm::AggressiveAntiDepBreaker, and llvm::CriticalAntiDepBreaker.
| virtual void llvm::AntiDepBreaker::Observe | ( | MachineInstr * | MI, |
| unsigned | Count, | ||
| unsigned | InsertPosIndex | ||
| ) | [pure virtual] |
Observe - Update liveness information to account for the current instruction, which will not be scheduled.
Implemented in llvm::AggressiveAntiDepBreaker, and llvm::CriticalAntiDepBreaker.
| virtual void llvm::AntiDepBreaker::StartBlock | ( | MachineBasicBlock * | BB | ) | [pure virtual] |
Start - Initialize anti-dep breaking for a new basic block.
Implemented in llvm::AggressiveAntiDepBreaker, and llvm::CriticalAntiDepBreaker.
| void llvm::AntiDepBreaker::UpdateDbgValue | ( | MachineInstr * | MI, |
| unsigned | OldReg, | ||
| unsigned | NewReg | ||
| ) | [inline] |
UpdateDbgValue - Update DBG_VALUE if dependency breaker is updating other machine instruction to use NewReg.
Definition at line 62 of file AntiDepBreaker.h.
References llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::isDebugValue(), llvm::MachineOperand::isReg(), and llvm::MachineOperand::setReg().
Referenced by llvm::CriticalAntiDepBreaker::BreakAntiDependencies(), and llvm::AggressiveAntiDepBreaker::BreakAntiDependencies().
The documentation for this class was generated from the following files:
1.7.6.1