LLVM 18.0.0git
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#include "CodeGen/RegAllocGreedy.h"
Classes | |
class | ExtraRegInfo |
Track allocation stage and eviction loop prevention during allocation. More... | |
Public Member Functions | |
LiveRegMatrix * | getInterferenceMatrix () const |
LiveIntervals * | getLiveIntervals () const |
VirtRegMap * | getVirtRegMap () const |
const RegisterClassInfo & | getRegClassInfo () const |
const ExtraRegInfo & | getExtraInfo () const |
size_t | getQueueSize () const |
bool | getRegClassPriorityTrumpsGlobalness () const |
bool | getReverseLocalAssignment () const |
RAGreedy (const RegClassFilterFunc F=allocateAllRegClasses) | |
StringRef | getPassName () const override |
Return the pass name. | |
void | getAnalysisUsage (AnalysisUsage &AU) const override |
RAGreedy analysis usage. | |
void | releaseMemory () override |
releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed. | |
Spiller & | spiller () override |
void | enqueueImpl (const LiveInterval *LI) override |
enqueue - Add VirtReg to the priority queue of unassigned registers. | |
const LiveInterval * | dequeue () override |
dequeue - Return the next unassigned register, or NULL. | |
MCRegister | selectOrSplit (const LiveInterval &, SmallVectorImpl< Register > &) override |
void | aboutToRemoveInterval (const LiveInterval &) override |
Method called when the allocator is about to remove a LiveInterval. | |
bool | runOnMachineFunction (MachineFunction &mf) override |
Perform register allocation. | |
MachineFunctionProperties | getRequiredProperties () const override |
MachineFunctionProperties | getClearedProperties () const override |
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bool | doInitialization (Module &) override |
doInitialization - Virtual method overridden by subclasses to do any necessary initialization before any pass is run. | |
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FunctionPass (char &pid) | |
Pass * | createPrinterPass (raw_ostream &OS, const std::string &Banner) const override |
createPrinterPass - Get a function printer pass. | |
virtual bool | runOnFunction (Function &F)=0 |
runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass. | |
void | assignPassManager (PMStack &PMS, PassManagerType T) override |
Find appropriate Function Pass Manager or Call Graph Pass Manager in the PM Stack and add self into that manager. | |
PassManagerType | getPotentialPassManagerType () const override |
Return what kind of Pass Manager can manage this pass. | |
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Pass (PassKind K, char &pid) | |
Pass (const Pass &)=delete | |
Pass & | operator= (const Pass &)=delete |
virtual | ~Pass () |
PassKind | getPassKind () const |
virtual StringRef | getPassName () const |
getPassName - Return a nice clean name for a pass. | |
AnalysisID | getPassID () const |
getPassID - Return the PassID number that corresponds to this pass. | |
virtual bool | doInitialization (Module &) |
doInitialization - Virtual method overridden by subclasses to do any necessary initialization before any pass is run. | |
virtual bool | doFinalization (Module &) |
doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run. | |
virtual void | print (raw_ostream &OS, const Module *M) const |
print - Print out the internal state of the pass. | |
void | dump () const |
virtual Pass * | createPrinterPass (raw_ostream &OS, const std::string &Banner) const =0 |
createPrinterPass - Get a Pass appropriate to print the IR this pass operates on (Module, Function or MachineFunction). | |
virtual void | assignPassManager (PMStack &, PassManagerType) |
Each pass is responsible for assigning a pass manager to itself. | |
virtual void | preparePassManager (PMStack &) |
Check if available pass managers are suitable for this pass or not. | |
virtual PassManagerType | getPotentialPassManagerType () const |
Return what kind of Pass Manager can manage this pass. | |
void | setResolver (AnalysisResolver *AR) |
AnalysisResolver * | getResolver () const |
virtual void | getAnalysisUsage (AnalysisUsage &) const |
getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job. | |
virtual void | releaseMemory () |
releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed. | |
virtual void * | getAdjustedAnalysisPointer (AnalysisID ID) |
getAdjustedAnalysisPointer - This method is used when a pass implements an analysis interface through multiple inheritance. | |
virtual ImmutablePass * | getAsImmutablePass () |
virtual PMDataManager * | getAsPMDataManager () |
virtual void | verifyAnalysis () const |
verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information. | |
virtual void | dumpPassStructure (unsigned Offset=0) |
template<typename AnalysisType > | |
AnalysisType * | getAnalysisIfAvailable () const |
getAnalysisIfAvailable<AnalysisType>() - Subclasses use this function to get analysis information that might be around, for example to update it. | |
bool | mustPreserveAnalysisID (char &AID) const |
mustPreserveAnalysisID - This method serves the same function as getAnalysisIfAvailable, but works if you just have an AnalysisID. | |
template<typename AnalysisType > | |
AnalysisType & | getAnalysis () const |
getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function. | |
template<typename AnalysisType > | |
AnalysisType & | getAnalysis (Function &F, bool *Changed=nullptr) |
getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function. | |
template<typename AnalysisType > | |
AnalysisType & | getAnalysisID (AnalysisID PI) const |
template<typename AnalysisType > | |
AnalysisType & | getAnalysisID (AnalysisID PI, Function &F, bool *Changed=nullptr) |
Static Public Attributes | |
static char | ID = 0 |
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static bool | VerifyEnabled = false |
VerifyEnabled - True when -verify-regalloc is given. | |
Additional Inherited Members | |
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static const PassInfo * | lookupPassInfo (const void *TI) |
static const PassInfo * | lookupPassInfo (StringRef Arg) |
static Pass * | createPass (AnalysisID ID) |
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MachineFunctionPass (char &ID) | |
virtual bool | runOnMachineFunction (MachineFunction &MF)=0 |
runOnMachineFunction - This method must be overloaded to perform the desired machine code transformation or analysis. | |
void | getAnalysisUsage (AnalysisUsage &AU) const override |
getAnalysisUsage - Subclasses that override getAnalysisUsage must call this. | |
virtual MachineFunctionProperties | getRequiredProperties () const |
virtual MachineFunctionProperties | getSetProperties () const |
virtual MachineFunctionProperties | getClearedProperties () const |
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bool | skipFunction (const Function &F) const |
Optional passes call this function to check whether the pass should be skipped. | |
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RegAllocBase (const RegClassFilterFunc F=allocateAllRegClasses) | |
virtual | ~RegAllocBase ()=default |
void | init (VirtRegMap &vrm, LiveIntervals &lis, LiveRegMatrix &mat) |
void | allocatePhysRegs () |
virtual void | postOptimization () |
virtual Spiller & | spiller ()=0 |
virtual void | enqueueImpl (const LiveInterval *LI)=0 |
enqueue - Add VirtReg to the priority queue of unassigned registers. | |
void | enqueue (const LiveInterval *LI) |
enqueue - Add VirtReg to the priority queue of unassigned registers. | |
virtual const LiveInterval * | dequeue ()=0 |
dequeue - Return the next unassigned register, or NULL. | |
virtual MCRegister | selectOrSplit (const LiveInterval &VirtReg, SmallVectorImpl< Register > &splitLVRs)=0 |
virtual void | aboutToRemoveInterval (const LiveInterval &LI) |
Method called when the allocator is about to remove a LiveInterval. | |
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const TargetRegisterInfo * | TRI = nullptr |
MachineRegisterInfo * | MRI = nullptr |
VirtRegMap * | VRM = nullptr |
LiveIntervals * | LIS = nullptr |
LiveRegMatrix * | Matrix = nullptr |
RegisterClassInfo | RegClassInfo |
const RegClassFilterFunc | ShouldAllocateClass |
SmallPtrSet< MachineInstr *, 32 > | DeadRemats |
Inst which is a def of an original reg and whose defs are already all dead after remat is saved in DeadRemats. | |
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static const char | TimerGroupName [] = "regalloc" |
static const char | TimerGroupDescription [] = "Register Allocation" |
Definition at line 61 of file RegAllocGreedy.h.
RAGreedy::RAGreedy | ( | const RegClassFilterFunc | F = allocateAllRegClasses | ) |
Definition at line 200 of file RegAllocGreedy.cpp.
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overridevirtual |
Method called when the allocator is about to remove a LiveInterval.
Reimplemented from llvm::RegAllocBase.
Definition at line 2182 of file RegAllocGreedy.cpp.
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overridevirtual |
dequeue - Return the next unassigned register, or NULL.
Implements llvm::RegAllocBase.
Definition at line 385 of file RegAllocGreedy.cpp.
References dequeue().
Referenced by dequeue().
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overridevirtual |
enqueue - Add VirtReg to the priority queue of unassigned registers.
Implements llvm::RegAllocBase.
Definition at line 285 of file RegAllocGreedy.cpp.
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overridevirtual |
RAGreedy analysis usage.
Reimplemented from llvm::MachineFunctionPass.
Definition at line 205 of file RegAllocGreedy.cpp.
References llvm::AnalysisUsage::addPreserved(), llvm::AnalysisUsage::addRequired(), llvm::MachineFunctionPass::getAnalysisUsage(), and llvm::AnalysisUsage::setPreservesCFG().
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inlineoverridevirtual |
Reimplemented from llvm::MachineFunctionPass.
Definition at line 309 of file RegAllocGreedy.h.
References llvm::MachineFunctionProperties::set().
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inline |
Definition at line 147 of file RegAllocGreedy.h.
Referenced by llvm::MLPriorityAdvisor::getPriorityImpl().
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inline |
Definition at line 143 of file RegAllocGreedy.h.
References Matrix.
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inline |
Definition at line 144 of file RegAllocGreedy.h.
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inlineoverridevirtual |
Return the pass name.
Reimplemented from llvm::Pass.
Definition at line 289 of file RegAllocGreedy.h.
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inline |
Definition at line 148 of file RegAllocGreedy.h.
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inline |
Definition at line 146 of file RegAllocGreedy.h.
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inline |
Definition at line 152 of file RegAllocGreedy.h.
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inlineoverridevirtual |
Reimplemented from llvm::MachineFunctionPass.
Definition at line 304 of file RegAllocGreedy.h.
References llvm::MachineFunctionProperties::set().
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inline |
Definition at line 155 of file RegAllocGreedy.h.
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inline |
Definition at line 145 of file RegAllocGreedy.h.
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overridevirtual |
releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed.
The default behavior of passes is to hold onto memory for the entire duration of their lifetime (which is the entire compile time). For pipelined passes, this is not a big deal because that memory gets recycled every time the pass is invoked on another program unit. For IP passes, it is more important to free memory when it is unused.
Optionally implement this function to release pass memory when it is no longer used.
Reimplemented from llvm::Pass.
Definition at line 280 of file RegAllocGreedy.cpp.
References llvm::SmallVectorImpl< T >::clear().
Referenced by runOnMachineFunction().
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overridevirtual |
Perform register allocation.
Implements llvm::MachineFunctionPass.
Definition at line 2679 of file RegAllocGreedy.cpp.
References llvm::RegAllocBase::allocatePhysRegs(), llvm::createInlineSpiller(), llvm::dbgs(), llvm::Pass::dump(), llvm::LiveRegMatrix::getLiveUnions(), llvm::MachineFunction::getName(), llvm::TargetRegisterInfo::getRegisterCosts(), GreedyRegClassPriorityTrumpsGlobalness, GreedyReverseLocalAssignment, llvm::InterferenceCache::init(), llvm::RegAllocBase::init(), llvm::RegAllocBase::LIS, LLVM_DEBUG, Loops, llvm::RegAllocBase::Matrix, llvm::SlotIndexes::packIndexes(), llvm::RegAllocBase::postOptimization(), llvm::TargetRegisterInfo::regClassPriorityTrumpsGlobalness(), releaseMemory(), llvm::SmallVectorImpl< T >::resize(), llvm::TargetRegisterInfo::reverseLocalAssignment(), llvm::RegAllocBase::TRI, llvm::RegAllocBase::VerifyEnabled, and llvm::RegAllocBase::VRM.
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overridevirtual |
Implements llvm::RegAllocBase.
Definition at line 2116 of file RegAllocGreedy.cpp.
References llvm::LLVMContext::emitError(), llvm::Function::getContext(), and llvm::MachineFunction::getFunction().
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inlineoverridevirtual |
Implements llvm::RegAllocBase.
Definition at line 294 of file RegAllocGreedy.h.
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static |
Definition at line 314 of file RegAllocGreedy.h.