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Diffstat (limited to 'include/llvm/Support/StandardPasses.h')
| -rw-r--r-- | include/llvm/Support/StandardPasses.h | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/include/llvm/Support/StandardPasses.h b/include/llvm/Support/StandardPasses.h deleted file mode 100644 index 8dfd6f9..0000000 --- a/include/llvm/Support/StandardPasses.h +++ /dev/null @@ -1,244 +0,0 @@ -//===-- llvm/Support/StandardPasses.h - Standard pass lists -----*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines utility functions for creating a "standard" set of -// optimization passes, so that compilers and tools which use optimization -// passes use the same set of standard passes. -// -// These are implemented as inline functions so that we do not have to worry -// about link issues. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_SUPPORT_STANDARDPASSES_H -#define LLVM_SUPPORT_STANDARDPASSES_H - -#include "llvm/PassManager.h" -#include "llvm/Analysis/Passes.h" -#include "llvm/Analysis/Verifier.h" -#include "llvm/Transforms/Scalar.h" -#include "llvm/Transforms/IPO.h" - -namespace llvm { - - static inline void createStandardAliasAnalysisPasses(PassManagerBase *PM) { - // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that - // BasicAliasAnalysis wins if they disagree. This is intended to help - // support "obvious" type-punning idioms. - PM->add(createTypeBasedAliasAnalysisPass()); - PM->add(createBasicAliasAnalysisPass()); - } - - /// createStandardFunctionPasses - Add the standard list of function passes to - /// the provided pass manager. - /// - /// \arg OptimizationLevel - The optimization level, corresponding to -O0, - /// -O1, etc. - static inline void createStandardFunctionPasses(PassManagerBase *PM, - unsigned OptimizationLevel) { - if (OptimizationLevel > 0) { - createStandardAliasAnalysisPasses(PM); - PM->add(createCFGSimplificationPass()); - PM->add(createScalarReplAggregatesPass()); - PM->add(createEarlyCSEPass()); - } - } - - /// createStandardModulePasses - Add the standard list of module passes to the - /// provided pass manager. - /// - /// \arg OptimizationLevel - The optimization level, corresponding to -O0, - /// -O1, etc. - /// \arg OptimizeSize - Whether the transformations should optimize for size. - /// \arg UnitAtATime - Allow passes which may make global module changes. - /// \arg UnrollLoops - Allow loop unrolling. - /// \arg SimplifyLibCalls - Allow library calls to be simplified. - /// \arg HaveExceptions - Whether the module may have code using exceptions. - /// \arg InliningPass - The inlining pass to use, if any, or null. This will - /// always be added, even at -O0.a - static inline void createStandardModulePasses(PassManagerBase *PM, - unsigned OptimizationLevel, - bool OptimizeSize, - bool UnitAtATime, - bool UnrollLoops, - bool SimplifyLibCalls, - bool HaveExceptions, - Pass *InliningPass) { - createStandardAliasAnalysisPasses(PM); - - // If all optimizations are disabled, just run the always-inline pass. - if (OptimizationLevel == 0) { - if (InliningPass) - PM->add(InliningPass); - return; - } - - if (UnitAtATime) { - PM->add(createGlobalOptimizerPass()); // Optimize out global vars - - PM->add(createIPSCCPPass()); // IP SCCP - PM->add(createDeadArgEliminationPass()); // Dead argument elimination - - PM->add(createInstructionCombiningPass());// Clean up after IPCP & DAE - PM->add(createCFGSimplificationPass()); // Clean up after IPCP & DAE - } - - // Start of CallGraph SCC passes. - if (UnitAtATime && HaveExceptions) - PM->add(createPruneEHPass()); // Remove dead EH info - if (InliningPass) - PM->add(InliningPass); - if (UnitAtATime) - PM->add(createFunctionAttrsPass()); // Set readonly/readnone attrs - if (OptimizationLevel > 2) - PM->add(createArgumentPromotionPass()); // Scalarize uninlined fn args - - // Start of function pass. - // Break up aggregate allocas, using SSAUpdater. - PM->add(createScalarReplAggregatesPass(-1, false)); - PM->add(createEarlyCSEPass()); // Catch trivial redundancies - if (SimplifyLibCalls) - PM->add(createSimplifyLibCallsPass()); // Library Call Optimizations - PM->add(createJumpThreadingPass()); // Thread jumps. - PM->add(createCorrelatedValuePropagationPass()); // Propagate conditionals - PM->add(createCFGSimplificationPass()); // Merge & remove BBs - PM->add(createInstructionCombiningPass()); // Combine silly seq's - - PM->add(createTailCallEliminationPass()); // Eliminate tail calls - PM->add(createCFGSimplificationPass()); // Merge & remove BBs - PM->add(createReassociatePass()); // Reassociate expressions - PM->add(createLoopRotatePass()); // Rotate Loop - PM->add(createLICMPass()); // Hoist loop invariants - PM->add(createLoopUnswitchPass(OptimizeSize || OptimizationLevel < 3)); - PM->add(createInstructionCombiningPass()); - PM->add(createIndVarSimplifyPass()); // Canonicalize indvars - PM->add(createLoopIdiomPass()); // Recognize idioms like memset. - PM->add(createLoopDeletionPass()); // Delete dead loops - if (UnrollLoops) - PM->add(createLoopUnrollPass()); // Unroll small loops - if (OptimizationLevel > 1) - PM->add(createGVNPass()); // Remove redundancies - PM->add(createMemCpyOptPass()); // Remove memcpy / form memset - PM->add(createSCCPPass()); // Constant prop with SCCP - - // Run instcombine after redundancy elimination to exploit opportunities - // opened up by them. - PM->add(createInstructionCombiningPass()); - PM->add(createJumpThreadingPass()); // Thread jumps - PM->add(createCorrelatedValuePropagationPass()); - PM->add(createDeadStoreEliminationPass()); // Delete dead stores - PM->add(createAggressiveDCEPass()); // Delete dead instructions - PM->add(createCFGSimplificationPass()); // Merge & remove BBs - PM->add(createInstructionCombiningPass()); // Clean up after everything. - - if (UnitAtATime) { - PM->add(createStripDeadPrototypesPass()); // Get rid of dead prototypes - PM->add(createDeadTypeEliminationPass()); // Eliminate dead types - - // GlobalOpt already deletes dead functions and globals, at -O3 try a - // late pass of GlobalDCE. It is capable of deleting dead cycles. - if (OptimizationLevel > 2) - PM->add(createGlobalDCEPass()); // Remove dead fns and globals. - - if (OptimizationLevel > 1) - PM->add(createConstantMergePass()); // Merge dup global constants - } - } - - static inline void addOnePass(PassManagerBase *PM, Pass *P, bool AndVerify) { - PM->add(P); - - if (AndVerify) - PM->add(createVerifierPass()); - } - - /// createStandardLTOPasses - Add the standard list of module passes suitable - /// for link time optimization. - /// - /// Internalize - Run the internalize pass. - /// RunInliner - Use a function inlining pass. - /// VerifyEach - Run the verifier after each pass. - static inline void createStandardLTOPasses(PassManagerBase *PM, - bool Internalize, - bool RunInliner, - bool VerifyEach) { - // Provide AliasAnalysis services for optimizations. - createStandardAliasAnalysisPasses(PM); - - // Now that composite has been compiled, scan through the module, looking - // for a main function. If main is defined, mark all other functions - // internal. - if (Internalize) - addOnePass(PM, createInternalizePass(true), VerifyEach); - - // Propagate constants at call sites into the functions they call. This - // opens opportunities for globalopt (and inlining) by substituting function - // pointers passed as arguments to direct uses of functions. - addOnePass(PM, createIPSCCPPass(), VerifyEach); - - // Now that we internalized some globals, see if we can hack on them! - addOnePass(PM, createGlobalOptimizerPass(), VerifyEach); - - // Linking modules together can lead to duplicated global constants, only - // keep one copy of each constant... - addOnePass(PM, createConstantMergePass(), VerifyEach); - - // Remove unused arguments from functions... - addOnePass(PM, createDeadArgEliminationPass(), VerifyEach); - - // Reduce the code after globalopt and ipsccp. Both can open up significant - // simplification opportunities, and both can propagate functions through - // function pointers. When this happens, we often have to resolve varargs - // calls, etc, so let instcombine do this. - addOnePass(PM, createInstructionCombiningPass(), VerifyEach); - - // Inline small functions - if (RunInliner) - addOnePass(PM, createFunctionInliningPass(), VerifyEach); - - addOnePass(PM, createPruneEHPass(), VerifyEach); // Remove dead EH info. - // Optimize globals again if we ran the inliner. - if (RunInliner) - addOnePass(PM, createGlobalOptimizerPass(), VerifyEach); - addOnePass(PM, createGlobalDCEPass(), VerifyEach); // Remove dead functions. - - // If we didn't decide to inline a function, check to see if we can - // transform it to pass arguments by value instead of by reference. - addOnePass(PM, createArgumentPromotionPass(), VerifyEach); - - // The IPO passes may leave cruft around. Clean up after them. - addOnePass(PM, createInstructionCombiningPass(), VerifyEach); - addOnePass(PM, createJumpThreadingPass(), VerifyEach); - // Break up allocas - addOnePass(PM, createScalarReplAggregatesPass(), VerifyEach); - - // Run a few AA driven optimizations here and now, to cleanup the code. - addOnePass(PM, createFunctionAttrsPass(), VerifyEach); // Add nocapture. - addOnePass(PM, createGlobalsModRefPass(), VerifyEach); // IP alias analysis. - - addOnePass(PM, createLICMPass(), VerifyEach); // Hoist loop invariants. - addOnePass(PM, createGVNPass(), VerifyEach); // Remove redundancies. - addOnePass(PM, createMemCpyOptPass(), VerifyEach); // Remove dead memcpys. - // Nuke dead stores. - addOnePass(PM, createDeadStoreEliminationPass(), VerifyEach); - - // Cleanup and simplify the code after the scalar optimizations. - addOnePass(PM, createInstructionCombiningPass(), VerifyEach); - - addOnePass(PM, createJumpThreadingPass(), VerifyEach); - - // Delete basic blocks, which optimization passes may have killed. - addOnePass(PM, createCFGSimplificationPass(), VerifyEach); - - // Now that we have optimized the program, discard unreachable functions. - addOnePass(PM, createGlobalDCEPass(), VerifyEach); - } -} - -#endif |
