The legacy pass manager's instcombine pass. More...
#include "llvm/Transforms/InstCombine/InstCombine.h"
Public Member Functions | |
| InstructionCombiningPass () | |
| void | getAnalysisUsage (AnalysisUsage &AU) const override |
| getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job. | |
| bool | runOnFunction (Function &F) override |
| runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass. | |
 Public Member Functions inherited from llvm::FunctionPass | |
| 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. | |
| Public Member Functions inherited from llvm::Pass | |
| 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 |
Additional Inherited Members | |
| Static Public Member Functions inherited from llvm::Pass | |
| static const PassInfo * | lookupPassInfo (const void *TI) |
| static const PassInfo * | lookupPassInfo (StringRef Arg) |
| static Pass * | createPass (AnalysisID ID) |
| Protected Member Functions inherited from llvm::FunctionPass | |
| bool | skipFunction (const Function &F) const |
| Optional passes call this function to check whether the pass should be skipped. | |
Detailed Description
The legacy pass manager's instcombine pass.
This is a basic whole-function wrapper around the instcombine utility. It will try to combine all instructions in the function.
Definition at line 71 of file InstCombine.h.
Constructor & Destructor Documentation
◆ InstructionCombiningPass()
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explicit |
Definition at line 5544 of file InstructionCombining.cpp.
References llvm::PassRegistry::getPassRegistry(), and llvm::initializeInstructionCombiningPassPass().
Member Function Documentation
◆ getAnalysisUsage()
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overridevirtual |
getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job.
If a pass specifies that it uses a particular analysis result to this function, it can then use the getAnalysis<AnalysisType>() function, below.
Reimplemented from llvm::Pass.
Definition at line 5495 of file InstructionCombining.cpp.
References llvm::AnalysisUsage::addPreserved(), llvm::AnalysisUsage::addRequired(), llvm::LazyBlockFrequencyInfoPass::getLazyBFIAnalysisUsage(), and llvm::AnalysisUsage::setPreservesCFG().
◆ runOnFunction()
runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass.
Implements llvm::FunctionPass.
Definition at line 5511 of file InstructionCombining.cpp.
References combineInstructionsOverFunction(), F, llvm::ProfileSummaryInfo::hasProfileSummary(), and llvm::FunctionPass::skipFunction().
Member Data Documentation
◆ ID
|
static |
Definition at line 75 of file InstCombine.h.
The documentation for this class was generated from the following files:
- include/llvm/Transforms/InstCombine/InstCombine.h
- lib/Transforms/InstCombine/InstructionCombining.cpp
