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LLVM
4.0.0
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PassManagerBuilder - This class is used to set up a standard optimization sequence for languages like C and C++, allowing some APIs to customize the pass sequence in various ways. More...
#include <PassManagerBuilder.h>
Public Types | |
| enum | ExtensionPointTy { EP_EarlyAsPossible, EP_ModuleOptimizerEarly, EP_LoopOptimizerEnd, EP_ScalarOptimizerLate, EP_OptimizerLast, EP_VectorizerStart, EP_EnabledOnOptLevel0, EP_Peephole, EP_CGSCCOptimizerLate } |
| typedef std::function< void(const PassManagerBuilder &Builder, legacy::PassManagerBase &PM)> | ExtensionFn |
| Extensions are passed the builder itself (so they can see how it is configured) as well as the pass manager to add stuff to. More... | |
Public Member Functions | |
| PassManagerBuilder () | |
| ~PassManagerBuilder () | |
| void | addExtension (ExtensionPointTy Ty, ExtensionFn Fn) |
| void | populateFunctionPassManager (legacy::FunctionPassManager &FPM) |
| populateFunctionPassManager - This fills in the function pass manager, which is expected to be run on each function immediately as it is generated. More... | |
| void | populateModulePassManager (legacy::PassManagerBase &MPM) |
| populateModulePassManager - This sets up the primary pass manager. More... | |
| void | populateLTOPassManager (legacy::PassManagerBase &PM) |
| void | populateThinLTOPassManager (legacy::PassManagerBase &PM) |
Static Public Member Functions | |
| static void | addGlobalExtension (ExtensionPointTy Ty, ExtensionFn Fn) |
| Adds an extension that will be used by all PassManagerBuilder instances. More... | |
Public Attributes | |
| unsigned | OptLevel |
| The Optimization Level - Specify the basic optimization level. More... | |
| unsigned | SizeLevel |
| SizeLevel - How much we're optimizing for size. More... | |
| TargetLibraryInfoImpl * | LibraryInfo |
| LibraryInfo - Specifies information about the runtime library for the optimizer. More... | |
| Pass * | Inliner |
| Inliner - Specifies the inliner to use. More... | |
| bool | DisableTailCalls |
| bool | DisableUnitAtATime |
| bool | DisableUnrollLoops |
| bool | BBVectorize |
| bool | SLPVectorize |
| bool | LoopVectorize |
| bool | RerollLoops |
| bool | LoadCombine |
| bool | NewGVN |
| bool | DisableGVNLoadPRE |
| bool | VerifyInput |
| bool | VerifyOutput |
| bool | MergeFunctions |
| bool | PrepareForLTO |
| bool | PrepareForThinLTO |
| bool | PerformThinLTO |
| bool | EnablePGOInstrGen |
| Enable profile instrumentation pass. More... | |
| std::string | PGOInstrGen |
| Profile data file name that the instrumentation will be written to. More... | |
| std::string | PGOInstrUse |
| Path of the profile data file. More... | |
| std::string | PGOSampleUse |
| Path of the sample Profile data file. More... | |
PassManagerBuilder - This class is used to set up a standard optimization sequence for languages like C and C++, allowing some APIs to customize the pass sequence in various ways.
A simple example of using it would be:
PassManagerBuilder Builder; Builder.OptLevel = 2; Builder.populateFunctionPassManager(FPM); Builder.populateModulePassManager(MPM);
In addition to setting up the basic passes, PassManagerBuilder allows frontends to vend a plugin API, where plugins are allowed to add extensions to the default pass manager. They do this by specifying where in the pass pipeline they want to be added, along with a callback function that adds the pass(es). For example, a plugin that wanted to add a loop optimization could do something like this:
static void addMyLoopPass(const PMBuilder &Builder, PassManagerBase &PM) { if (Builder.getOptLevel() > 2 && Builder.getOptSizeLevel() == 0) PM.add(createMyAwesomePass()); } ... Builder.addExtension(PassManagerBuilder::EP_LoopOptimizerEnd, addMyLoopPass); ...
Definition at line 58 of file Transforms/IPO/PassManagerBuilder.h.
| typedef std::function<void(const PassManagerBuilder &Builder, legacy::PassManagerBase &PM)> llvm::PassManagerBuilder::ExtensionFn |
Extensions are passed the builder itself (so they can see how it is configured) as well as the pass manager to add stuff to.
Definition at line 64 of file Transforms/IPO/PassManagerBuilder.h.
| Enumerator | |
|---|---|
| EP_EarlyAsPossible |
EP_EarlyAsPossible - This extension point allows adding passes before any other transformations, allowing them to see the code as it is coming out of the frontend. |
| EP_ModuleOptimizerEarly |
EP_ModuleOptimizerEarly - This extension point allows adding passes just before the main module-level optimization passes. |
| EP_LoopOptimizerEnd |
EP_LoopOptimizerEnd - This extension point allows adding loop passes to the end of the loop optimizer. |
| EP_ScalarOptimizerLate |
EP_ScalarOptimizerLate - This extension point allows adding optimization passes after most of the main optimizations, but before the last cleanup-ish optimizations. |
| EP_OptimizerLast |
EP_OptimizerLast – This extension point allows adding passes that run after everything else. |
| EP_VectorizerStart |
EP_VectorizerStart - This extension point allows adding optimization passes before the vectorizer and other highly target specific optimization passes are executed. |
| EP_EnabledOnOptLevel0 |
EP_EnabledOnOptLevel0 - This extension point allows adding passes that should not be disabled by O0 optimization level. The passes will be inserted after the inlining pass. |
| EP_Peephole |
EP_Peephole - This extension point allows adding passes that perform peephole optimizations similar to the instruction combiner. These passes will be inserted after each instance of the instruction combiner pass. |
| EP_CGSCCOptimizerLate |
EP_CGSCCOptimizerLate - This extension point allows adding CallGraphSCC passes at the end of the main CallGraphSCC passes and before any function simplification passes run by CGPassManager. |
Definition at line 65 of file Transforms/IPO/PassManagerBuilder.h.
| PassManagerBuilder::PassManagerBuilder | ( | ) |
Definition at line 152 of file PassManagerBuilder.cpp.
References BBVectorize, DisableGVNLoadPRE, DisableUnitAtATime, DisableUnrollLoops, EnablePGOInstrGen, EnablePrepareForThinLTO, Inliner, LibraryInfo, LoadCombine, LoopVectorize, MergeFunctions, OptLevel, PerformThinLTO, PGOInstrGen, PGOInstrUse, PGOOutputFile, PrepareForLTO, PrepareForThinLTO, RerollLoops, RunBBVectorization, RunLoadCombine, RunLoopRerolling, RunLoopVectorization, RunNewGVN, RunPGOInstrGen, RunPGOInstrUse, RunSLPVectorization, SizeLevel, SLPVectorize, VerifyInput, and VerifyOutput.
| PassManagerBuilder::~PassManagerBuilder | ( | ) |
Definition at line 177 of file PassManagerBuilder.cpp.
References Inliner, and LibraryInfo.
| void PassManagerBuilder::addExtension | ( | ExtensionPointTy | Ty, |
| ExtensionFn | Fn | ||
| ) |
Definition at line 192 of file PassManagerBuilder.cpp.
Referenced by llvm::addCoroutinePassesToExtensionPoints().
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static |
Adds an extension that will be used by all PassManagerBuilder instances.
This is intended to be used by plugins, to register a set of optimisations to run automatically.
Definition at line 186 of file PassManagerBuilder.cpp.
References GlobalExtensions.
Referenced by llvm::RegisterStandardPasses::RegisterStandardPasses().
| void PassManagerBuilder::populateFunctionPassManager | ( | legacy::FunctionPassManager & | FPM | ) |
populateFunctionPassManager - This fills in the function pass manager, which is expected to be run on each function immediately as it is generated.
The idea is to reduce the size of the IR in memory.
Definition at line 236 of file PassManagerBuilder.cpp.
References llvm::legacy::FunctionPassManager::add(), llvm::createCFGSimplificationPass(), llvm::createEarlyCSEPass(), llvm::createGVNHoistPass(), llvm::createLowerExpectIntrinsicPass(), llvm::createSROAPass(), EnableGVNHoist, EP_EarlyAsPossible, LibraryInfo, and OptLevel.
Referenced by LLVMPassManagerBuilderPopulateFunctionPassManager().
| void PassManagerBuilder::populateLTOPassManager | ( | legacy::PassManagerBase & | PM | ) |
Definition at line 843 of file PassManagerBuilder.cpp.
References llvm::legacy::PassManagerBase::add(), llvm::createCrossDSOCFIPass(), llvm::createLowerTypeTestsPass(), llvm::createVerifierPass(), LibraryInfo, llvm::None, OptLevel, VerifyInput, and VerifyOutput.
Referenced by LLVMPassManagerBuilderPopulateLTOPassManager().
| void PassManagerBuilder::populateModulePassManager | ( | legacy::PassManagerBase & | MPM | ) |
populateModulePassManager - This sets up the primary pass manager.
PGO instrumentation is added during the compile phase for ThinLTO, do not run it a second time
Definition at line 386 of file PassManagerBuilder.cpp.
References llvm::legacy::PassManagerBase::add(), BBVectorize, llvm::createAlignmentFromAssumptionsPass(), llvm::createArgumentPromotionPass(), llvm::createBarrierNoopPass(), llvm::createBBVectorizePass(), llvm::createCFGSimplificationPass(), llvm::createConstantMergePass(), llvm::createCorrelatedValuePropagationPass(), llvm::createDeadArgEliminationPass(), llvm::createEarlyCSEPass(), llvm::createEliminateAvailableExternallyPass(), llvm::createFloat2IntPass(), llvm::createForceFunctionAttrsLegacyPass(), llvm::createGlobalDCEPass(), llvm::createGlobalOptimizerPass(), llvm::createGlobalsAAWrapperPass(), llvm::createGVNPass(), llvm::createInferFunctionAttrsLegacyPass(), llvm::createInstructionSimplifierPass(), llvm::createIPSCCPPass(), llvm::createLICMPass(), llvm::createLoopDistributePass(), llvm::createLoopLoadEliminationPass(), llvm::createLoopRotatePass(), llvm::createLoopSinkPass(), llvm::createLoopUnrollPass(), llvm::createLoopUnswitchPass(), llvm::createLoopVectorizePass(), llvm::createLoopVersioningLICMPass(), llvm::createMergeFunctionsPass(), llvm::createNameAnonGlobalPass(), llvm::createNewGVNPass(), llvm::createPGOIndirectCallPromotionLegacyPass(), llvm::createPostOrderFunctionAttrsLegacyPass(), llvm::createPromoteMemoryToRegisterPass(), llvm::createPruneEHPass(), llvm::createReversePostOrderFunctionAttrsPass(), llvm::createSampleProfileLoaderPass(), llvm::createSLPVectorizerPass(), llvm::createStripDeadPrototypesPass(), DisableGVNLoadPRE, DisableUnitAtATime, DisableUnrollLoops, EnableLoopLoadElim, EnableNonLTOGlobalsModRef, EP_CGSCCOptimizerLate, EP_EnabledOnOptLevel0, EP_ModuleOptimizerEarly, EP_OptimizerLast, EP_Peephole, EP_VectorizerStart, ExtraVectorizerPasses, GlobalExtensions, Inliner, LibraryInfo, LoopVectorize, MergeFunctions, OptLevel, PerformThinLTO, PGOSampleUse, PrepareForLTO, PrepareForThinLTO, RunSLPAfterLoopVectorization, SizeLevel, SLPVectorize, UseGVNAfterVectorization, and UseLoopVersioningLICM.
Referenced by LLVMPassManagerBuilderPopulateModulePassManager(), and populateThinLTOPassManager().
| void PassManagerBuilder::populateThinLTOPassManager | ( | legacy::PassManagerBase & | PM | ) |
Definition at line 829 of file PassManagerBuilder.cpp.
References llvm::legacy::PassManagerBase::add(), llvm::createVerifierPass(), PerformThinLTO, populateModulePassManager(), VerifyInput, and VerifyOutput.
| bool llvm::PassManagerBuilder::BBVectorize |
Definition at line 129 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::DisableGVNLoadPRE |
Definition at line 135 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by llvm::LTOCodeGenerator::optimize(), PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::DisableTailCalls |
Definition at line 126 of file Transforms/IPO/PassManagerBuilder.h.
| bool llvm::PassManagerBuilder::DisableUnitAtATime |
Definition at line 127 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by LLVMPassManagerBuilderSetDisableUnitAtATime(), PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::DisableUnrollLoops |
Definition at line 128 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by LLVMPassManagerBuilderSetDisableUnrollLoops(), PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::EnablePGOInstrGen |
Enable profile instrumentation pass.
Definition at line 144 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder().
| Pass* llvm::PassManagerBuilder::Inliner |
Inliner - Specifies the inliner to use.
If this is non-null, it is added to the per-module passes.
Definition at line 124 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by LLVMPassManagerBuilderPopulateLTOPassManager(), LLVMPassManagerBuilderUseInlinerWithThreshold(), PassManagerBuilder(), populateModulePassManager(), and ~PassManagerBuilder().
| TargetLibraryInfoImpl* llvm::PassManagerBuilder::LibraryInfo |
LibraryInfo - Specifies information about the runtime library for the optimizer.
If this is non-null, it is added to both the function and per-module pass pipeline.
Definition at line 120 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), populateFunctionPassManager(), populateLTOPassManager(), populateModulePassManager(), and ~PassManagerBuilder().
| bool llvm::PassManagerBuilder::LoadCombine |
Definition at line 133 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder().
| bool llvm::PassManagerBuilder::LoopVectorize |
Definition at line 131 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::MergeFunctions |
Definition at line 138 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::NewGVN |
Definition at line 134 of file Transforms/IPO/PassManagerBuilder.h.
| unsigned llvm::PassManagerBuilder::OptLevel |
The Optimization Level - Specify the basic optimization level.
0 = -O0, 1 = -O1, 2 = -O2, 3 = -O3
Definition at line 111 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by LLVMPassManagerBuilderSetOptLevel(), PassManagerBuilder(), populateFunctionPassManager(), populateLTOPassManager(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::PerformThinLTO |
Definition at line 141 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), populateModulePassManager(), and populateThinLTOPassManager().
| std::string llvm::PassManagerBuilder::PGOInstrGen |
Profile data file name that the instrumentation will be written to.
Definition at line 146 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder().
| std::string llvm::PassManagerBuilder::PGOInstrUse |
Path of the profile data file.
Definition at line 148 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder().
| std::string llvm::PassManagerBuilder::PGOSampleUse |
Path of the sample Profile data file.
Definition at line 150 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by populateModulePassManager().
| bool llvm::PassManagerBuilder::PrepareForLTO |
Definition at line 139 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::PrepareForThinLTO |
Definition at line 140 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::RerollLoops |
Definition at line 132 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder().
| unsigned llvm::PassManagerBuilder::SizeLevel |
SizeLevel - How much we're optimizing for size.
0 = none, 1 = -Os, 2 = -Oz
Definition at line 115 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by LLVMPassManagerBuilderSetSizeLevel(), PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::SLPVectorize |
Definition at line 130 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), and populateModulePassManager().
| bool llvm::PassManagerBuilder::VerifyInput |
Definition at line 136 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), populateLTOPassManager(), and populateThinLTOPassManager().
| bool llvm::PassManagerBuilder::VerifyOutput |
Definition at line 137 of file Transforms/IPO/PassManagerBuilder.h.
Referenced by PassManagerBuilder(), populateLTOPassManager(), and populateThinLTOPassManager().
1.8.6