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LLVM
3.7.0
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Cost analyzer used by inliner. More...
#include <InlineCost.h>
Public Member Functions | |
| InlineCostAnalysis () | |
| ~InlineCostAnalysis () override | |
| void | getAnalysisUsage (AnalysisUsage &AU) const override |
| getAnalysisUsage - For this class, we declare that we require and preserve the call graph. More... | |
| bool | runOnSCC (CallGraphSCC &SCC) override |
| runOnSCC - This method should be implemented by the subclass to perform whatever action is necessary for the specified SCC. More... | |
| InlineCost | getInlineCost (CallSite CS, int Threshold) |
| Get an InlineCost object representing the cost of inlining this callsite. More... | |
| InlineCost | getInlineCost (CallSite CS, Function *Callee, int Threshold) |
| Get an InlineCost with the callee explicitly specified. More... | |
| bool | isInlineViable (Function &Callee) |
| Minimal filter to detect invalid constructs for inlining. More... | |
Public Member Functions inherited from llvm::CallGraphSCCPass | |
| CallGraphSCCPass (char &pid) | |
| Pass * | createPrinterPass (raw_ostream &O, const std::string &Banner) const override |
| createPrinterPass - Get a pass that prints the Module corresponding to a CallGraph. More... | |
| virtual bool | doInitialization (CallGraph &CG) |
| doInitialization - This method is called before the SCC's of the program has been processed, allowing the pass to do initialization as necessary. More... | |
| virtual bool | doFinalization (CallGraph &CG) |
| doFinalization - This method is called after the SCC's of the program has been processed, allowing the pass to do final cleanup as necessary. More... | |
| void | assignPassManager (PMStack &PMS, PassManagerType PMT) override |
| Assign pass manager to manager this pass. More... | |
| PassManagerType | getPotentialPassManagerType () const override |
| Return what kind of Pass Manager can manage this pass. More... | |
Public Member Functions inherited from llvm::Pass | |
| Pass (PassKind K, char &pid) | |
| virtual | ~Pass () |
| PassKind | getPassKind () const |
| virtual const char * | getPassName () const |
| getPassName - Return a nice clean name for a pass. More... | |
| AnalysisID | getPassID () const |
| getPassID - Return the PassID number that corresponds to this pass. More... | |
| virtual bool | doInitialization (Module &) |
| doInitialization - Virtual method overridden by subclasses to do any necessary initialization before any pass is run. More... | |
| virtual bool | doFinalization (Module &) |
| doFinalization - Virtual method overriden by subclasses to do any necessary clean up after all passes have run. More... | |
| virtual void | print (raw_ostream &O, const Module *M) const |
| print - Print out the internal state of the pass. More... | |
| void | dump () const |
| virtual void | preparePassManager (PMStack &) |
| Check if available pass managers are suitable for this pass or not. More... | |
| void | setResolver (AnalysisResolver *AR) |
| AnalysisResolver * | getResolver () const |
| 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. More... | |
| virtual void * | getAdjustedAnalysisPointer (AnalysisID ID) |
| getAdjustedAnalysisPointer - This method is used when a pass implements an analysis interface through multiple inheritance. More... | |
| 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. More... | |
| 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. More... | |
| bool | mustPreserveAnalysisID (char &AID) const |
| mustPreserveAnalysisID - This method serves the same function as getAnalysisIfAvailable, but works if you just have an AnalysisID. More... | |
| 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. More... | |
| template<typename AnalysisType > | |
| AnalysisType & | getAnalysis (Function &F) |
| getAnalysis<AnalysisType>() - This function is used by subclasses to get to the analysis information that they claim to use by overriding the getAnalysisUsage function. More... | |
| template<typename AnalysisType > | |
| AnalysisType & | getAnalysisID (AnalysisID PI) const |
| template<typename AnalysisType > | |
| AnalysisType & | getAnalysisID (AnalysisID PI, Function &F) |
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) |
Cost analyzer used by inliner.
Definition at line 102 of file InlineCost.h.
| InlineCostAnalysis::InlineCostAnalysis | ( | ) |
Definition at line 1316 of file InlineCost.cpp.
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override |
Definition at line 1318 of file InlineCost.cpp.
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overridevirtual |
getAnalysisUsage - For this class, we declare that we require and preserve the call graph.
For this class, we declare that we require and preserve the call graph.
If the derived class implements this method, it should always explicitly call the implementation here.
Reimplemented from llvm::CallGraphSCCPass.
Definition at line 1320 of file InlineCost.cpp.
References llvm::AnalysisUsage::addRequired(), llvm::CallGraphSCCPass::getAnalysisUsage(), and llvm::AnalysisUsage::setPreservesAll().
| InlineCost InlineCostAnalysis::getInlineCost | ( | CallSite | CS, |
| int | Threshold | ||
| ) |
Get an InlineCost object representing the cost of inlining this callsite.
Note that threshold is passed into this function. Only costs below the threshold are computed with any accuracy. The threshold can be used to bound the computation necessary to determine whether the cost is sufficiently low to warrant inlining.
Also note that calling this function dynamically computes the cost of inlining the callsite. It is an expensive, heavyweight call.
Definition at line 1333 of file InlineCost.cpp.
References llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getCalledFunction(), and Threshold.
| InlineCost InlineCostAnalysis::getInlineCost | ( | CallSite | CS, |
| Function * | Callee, | ||
| int | Threshold | ||
| ) |
Get an InlineCost with the callee explicitly specified.
This allows you to calculate the cost of inlining a function via a pointer. This behaves exactly as the version with no explicit callee parameter in all other respects.
Definition at line 1355 of file InlineCost.cpp.
References llvm::Attribute::AlwaysInline, llvm::CS, llvm::dbgs(), DEBUG, functionsHaveCompatibleAttributes(), llvm::InlineCost::get(), llvm::InlineCost::getAlways(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getCaller(), llvm::Value::getName(), llvm::InlineCost::getNever(), llvm::TargetTransformInfoWrapperPass::getTTI(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::hasFnAttr(), llvm::Function::hasFnAttribute(), isInlineViable(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::isNoInline(), llvm::GlobalValue::mayBeOverridden(), llvm::Attribute::NoInline, llvm::Attribute::OptimizeNone, and Threshold.
Minimal filter to detect invalid constructs for inlining.
Definition at line 1403 of file InlineCost.cpp.
References llvm::Function::begin(), llvm::CS, llvm::Function::end(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getCalledFunction(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getInstruction(), llvm::Function::getIntrinsicID(), llvm::Function::hasFnAttribute(), llvm::ARM_PROC::IE, llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::isCall(), and llvm::Attribute::ReturnsTwice.
Referenced by getInlineCost().
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overridevirtual |
runOnSCC - This method should be implemented by the subclass to perform whatever action is necessary for the specified SCC.
Note that non-recursive (or only self-recursive) functions will have an SCC size of 1, where recursive portions of the call graph will have SCC size > 1.
SCC passes that add or delete functions to the SCC are required to update the SCC list, otherwise stale pointers may be dereferenced.
Implements llvm::CallGraphSCCPass.
Definition at line 1327 of file InlineCost.cpp.
Definition at line 107 of file InlineCost.h.
1.8.6