LLVM  6.0.0svn
Public Member Functions | Public Attributes | List of all members
llvm::RegionPressure Struct Reference

RegisterPressure computed within a region of instructions delimited by TopPos and BottomPos. More...

#include "llvm/CodeGen/RegisterPressure.h"

Inheritance diagram for llvm::RegionPressure:
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Public Member Functions

void reset ()
 Clear the result so it can be used for another round of pressure tracking. More...
 
void openTop (MachineBasicBlock::const_iterator PrevTop)
 If the current top is the previous instruction (before receding), open it. More...
 
void openBottom (MachineBasicBlock::const_iterator PrevBottom)
 If the current bottom is the previous instr (before advancing), open it. More...
 
- 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. More...
 
MachineBasicBlock::const_iterator BottomPos
 
- Public Attributes inherited from llvm::RegisterPressure
std::vector< unsignedMaxSetPressure
 Map of max reg pressure indexed by pressure set ID, not class ID. More...
 
SmallVector< RegisterMaskPair, 8 > LiveInRegs
 List of live in virtual registers or physical register units. More...
 
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 84 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 202 of file RegisterPressure.cpp.

References 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 186 of file RegisterPressure.cpp.

References llvm::RegisterPressure::LiveInRegs.

◆ reset()

void RegionPressure::reset ( )

Clear the result so it can be used for another round of pressure tracking.

Definition at line 169 of file RegisterPressure.cpp.

References llvm::RegisterPressure::LiveInRegs, llvm::RegisterPressure::LiveOutRegs, and llvm::RegisterPressure::MaxSetPressure.

Member Data Documentation

◆ BottomPos

MachineBasicBlock::const_iterator llvm::RegionPressure::BottomPos

Definition at line 87 of file RegisterPressure.h.

◆ TopPos

MachineBasicBlock::const_iterator llvm::RegionPressure::TopPos

Record the boundary of the region being tracked.

Definition at line 86 of file RegisterPressure.h.


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