RegisterPressure computed within a region of instructions delimited by TopPos and BottomPos. More...
#include "llvm/CodeGen/RegisterPressure.h"
Public Member Functions | |
| void | reset () |
| Clear the result so it can be used for another round of pressure tracking. | |
| void | openTop (MachineBasicBlock::const_iterator PrevTop) |
| If the current top is the previous instruction (before receding), open it. | |
| void | openBottom (MachineBasicBlock::const_iterator PrevBottom) |
| If the current bottom is the previous instr (before advancing), open it. | |
 Public Member Functions inherited from llvm::RegisterPressure | |
| void | dump (const TargetRegisterInfo *TRI) const |
Public Attributes | |
| MachineBasicBlock::const_iterator | TopPos |
| Record the boundary of the region being tracked. | |
| MachineBasicBlock::const_iterator | BottomPos |
| Public Attributes inherited from llvm::RegisterPressure | |
| std::vector< unsigned > | MaxSetPressure |
| Map of max reg pressure indexed by pressure set ID, not class ID. | |
| SmallVector< RegisterMaskPair, 8 > | LiveInRegs |
| List of live in virtual registers or physical register units. | |
| SmallVector< RegisterMaskPair, 8 > | LiveOutRegs |
Detailed Description
RegisterPressure computed within a region of instructions delimited by TopPos and BottomPos.
This is a less precise version of IntervalPressure for use when LiveIntervals are unavailable.
Definition at line 82 of file RegisterPressure.h.
Member Function Documentation
◆ openBottom()
| void RegionPressure::openBottom | ( | MachineBasicBlock::const_iterator | PrevBottom | ) |
If the current bottom is the previous instr (before advancing), open it.
Definition at line 218 of file RegisterPressure.cpp.
References BottomPos, and llvm::RegisterPressure::LiveInRegs.
◆ openTop()
| void RegionPressure::openTop | ( | MachineBasicBlock::const_iterator | PrevTop | ) |
If the current top is the previous instruction (before receding), open it.
Definition at line 202 of file RegisterPressure.cpp.
References llvm::RegisterPressure::LiveInRegs, and TopPos.
◆ reset()
| void RegionPressure::reset | ( | ) |
Clear the result so it can be used for another round of pressure tracking.
Definition at line 185 of file RegisterPressure.cpp.
References BottomPos, llvm::RegisterPressure::LiveInRegs, llvm::RegisterPressure::LiveOutRegs, llvm::RegisterPressure::MaxSetPressure, and TopPos.
Member Data Documentation
◆ BottomPos
| MachineBasicBlock::const_iterator llvm::RegionPressure::BottomPos |
Definition at line 85 of file RegisterPressure.h.
Referenced by llvm::RegPressureTracker::isBottomClosed(), openBottom(), and reset().
◆ TopPos
| MachineBasicBlock::const_iterator llvm::RegionPressure::TopPos |
Record the boundary of the region being tracked.
Definition at line 84 of file RegisterPressure.h.
Referenced by llvm::RegPressureTracker::isTopClosed(), openTop(), and reset().
The documentation for this struct was generated from the following files:
- include/llvm/CodeGen/RegisterPressure.h
- lib/CodeGen/RegisterPressure.cpp
