# HG changeset patch # User Shinji KONO # Date 1697246029 -32400 # Node ID 31d058e83c980732ecf6b01a528abdf073ab30e9 # Parent 299ac740b5aad015d49d34230129ca419318a524 fix llvm again diff -r 299ac740b5aa -r 31d058e83c98 llvm/lib/Transforms/IPO/CMakeLists.txt --- a/llvm/lib/Transforms/IPO/CMakeLists.txt Sat Oct 14 09:56:37 2023 +0900 +++ b/llvm/lib/Transforms/IPO/CMakeLists.txt Sat Oct 14 10:13:49 2023 +0900 @@ -42,7 +42,6 @@ SyntheticCountsPropagation.cpp ThinLTOBitcodeWriter.cpp WholeProgramDevirt.cpp - PassManagerBuilder.cpp ADDITIONAL_HEADER_DIRS ${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms diff -r 299ac740b5aa -r 31d058e83c98 llvm/lib/Transforms/IPO/PassManagerBuilder.cpp --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp Sat Oct 14 09:56:37 2023 +0900 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,888 +0,0 @@ -//===- PassManagerBuilder.cpp - Build Standard Pass -----------------------===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -// -// This file defines the PassManagerBuilder class, which is used to set up a -// "standard" optimization sequence suitable for languages like C and C++. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Transforms/IPO/PassManagerBuilder.h" -#include "llvm-c/Transforms/PassManagerBuilder.h" -#include "llvm/ADT/STLExtras.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/Analysis/CFLAndersAliasAnalysis.h" -#include "llvm/Analysis/CFLSteensAliasAnalysis.h" -#include "llvm/Analysis/GlobalsModRef.h" -#include "llvm/Analysis/ScopedNoAliasAA.h" -#include "llvm/Analysis/TargetLibraryInfo.h" -#include "llvm/Analysis/TypeBasedAliasAnalysis.h" -#include "llvm/IR/LegacyPassManager.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/ManagedStatic.h" -#include "llvm/Target/CGPassBuilderOption.h" -#include "llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h" -#include "llvm/Transforms/IPO.h" -#include "llvm/Transforms/IPO/Attributor.h" -#include "llvm/Transforms/IPO/ForceFunctionAttrs.h" -#include "llvm/Transforms/IPO/FunctionAttrs.h" -#include "llvm/Transforms/IPO/InferFunctionAttrs.h" -#include "llvm/Transforms/InstCombine/InstCombine.h" -#include "llvm/Transforms/Instrumentation.h" -#include "llvm/Transforms/Scalar.h" -#include "llvm/Transforms/Scalar/GVN.h" -#include "llvm/Transforms/Scalar/LICM.h" -#include "llvm/Transforms/Scalar/LoopUnrollPass.h" -#include "llvm/Transforms/Scalar/SimpleLoopUnswitch.h" -#include "llvm/Transforms/Utils.h" -#include "llvm/Transforms/Vectorize.h" - -using namespace llvm; - -namespace llvm { -cl::opt RunPartialInlining("enable-partial-inlining", cl::Hidden, - cl::desc("Run Partial inlinining pass")); - -static cl::opt -UseGVNAfterVectorization("use-gvn-after-vectorization", - cl::init(false), cl::Hidden, - cl::desc("Run GVN instead of Early CSE after vectorization passes")); - -cl::opt ExtraVectorizerPasses( - "extra-vectorizer-passes", cl::init(false), cl::Hidden, - cl::desc("Run cleanup optimization passes after vectorization.")); - -static cl::opt -RunLoopRerolling("reroll-loops", cl::Hidden, - cl::desc("Run the loop rerolling pass")); - -cl::opt RunNewGVN("enable-newgvn", cl::init(false), cl::Hidden, - cl::desc("Run the NewGVN pass")); - -// Experimental option to use CFL-AA -static cl::opt<::CFLAAType> - UseCFLAA("use-cfl-aa", cl::init(::CFLAAType::None), cl::Hidden, - cl::desc("Enable the new, experimental CFL alias analysis"), - cl::values(clEnumValN(::CFLAAType::None, "none", "Disable CFL-AA"), - clEnumValN(::CFLAAType::Steensgaard, "steens", - "Enable unification-based CFL-AA"), - clEnumValN(::CFLAAType::Andersen, "anders", - "Enable inclusion-based CFL-AA"), - clEnumValN(::CFLAAType::Both, "both", - "Enable both variants of CFL-AA"))); - -cl::opt EnableLoopInterchange( - "enable-loopinterchange", cl::init(false), cl::Hidden, - cl::desc("Enable the experimental LoopInterchange Pass")); - -cl::opt EnableUnrollAndJam("enable-unroll-and-jam", cl::init(false), - cl::Hidden, - cl::desc("Enable Unroll And Jam Pass")); - -cl::opt EnableLoopFlatten("enable-loop-flatten", cl::init(false), - cl::Hidden, - cl::desc("Enable the LoopFlatten Pass")); - -cl::opt EnableDFAJumpThreading("enable-dfa-jump-thread", - cl::desc("Enable DFA jump threading."), - cl::init(false), cl::Hidden); - -cl::opt EnableHotColdSplit("hot-cold-split", - cl::desc("Enable hot-cold splitting pass")); - -cl::opt EnableIROutliner("ir-outliner", cl::init(false), cl::Hidden, - cl::desc("Enable ir outliner pass")); - -static cl::opt UseLoopVersioningLICM( - "enable-loop-versioning-licm", cl::init(false), cl::Hidden, - cl::desc("Enable the experimental Loop Versioning LICM pass")); - -cl::opt - DisablePreInliner("disable-preinline", cl::init(false), cl::Hidden, - cl::desc("Disable pre-instrumentation inliner")); - -cl::opt PreInlineThreshold( - "preinline-threshold", cl::Hidden, cl::init(75), - cl::desc("Control the amount of inlining in pre-instrumentation inliner " - "(default = 75)")); - -cl::opt - EnableGVNHoist("enable-gvn-hoist", - cl::desc("Enable the GVN hoisting pass (default = off)")); - -static cl::opt - DisableLibCallsShrinkWrap("disable-libcalls-shrinkwrap", cl::init(false), - cl::Hidden, - cl::desc("Disable shrink-wrap library calls")); - -cl::opt - EnableGVNSink("enable-gvn-sink", - cl::desc("Enable the GVN sinking pass (default = off)")); - -// This option is used in simplifying testing SampleFDO optimizations for -// profile loading. -cl::opt - EnableCHR("enable-chr", cl::init(true), cl::Hidden, - cl::desc("Enable control height reduction optimization (CHR)")); - -cl::opt FlattenedProfileUsed( - "flattened-profile-used", cl::init(false), cl::Hidden, - cl::desc("Indicate the sample profile being used is flattened, i.e., " - "no inline hierachy exists in the profile. ")); - -cl::opt EnableOrderFileInstrumentation( - "enable-order-file-instrumentation", cl::init(false), cl::Hidden, - cl::desc("Enable order file instrumentation (default = off)")); - -cl::opt EnableMatrix( - "enable-matrix", cl::init(false), cl::Hidden, - cl::desc("Enable lowering of the matrix intrinsics")); - -cl::opt EnableConstraintElimination( - "enable-constraint-elimination", cl::init(false), cl::Hidden, - cl::desc( - "Enable pass to eliminate conditions based on linear constraints.")); - -cl::opt EnableFunctionSpecialization( - "enable-function-specialization", cl::init(false), cl::Hidden, - cl::desc("Enable Function Specialization pass")); - -cl::opt AttributorRun( - "attributor-enable", cl::Hidden, cl::init(AttributorRunOption::NONE), - cl::desc("Enable the attributor inter-procedural deduction pass."), - cl::values(clEnumValN(AttributorRunOption::ALL, "all", - "enable all attributor runs"), - clEnumValN(AttributorRunOption::MODULE, "module", - "enable module-wide attributor runs"), - clEnumValN(AttributorRunOption::CGSCC, "cgscc", - "enable call graph SCC attributor runs"), - clEnumValN(AttributorRunOption::NONE, "none", - "disable attributor runs"))); - -extern cl::opt EnableKnowledgeRetention; -} // namespace llvm - -PassManagerBuilder::PassManagerBuilder() { - OptLevel = 2; - SizeLevel = 0; - LibraryInfo = nullptr; - Inliner = nullptr; - DisableUnrollLoops = false; - SLPVectorize = false; - LoopVectorize = true; - LoopsInterleaved = true; - RerollLoops = RunLoopRerolling; - NewGVN = RunNewGVN; - LicmMssaOptCap = SetLicmMssaOptCap; - LicmMssaNoAccForPromotionCap = SetLicmMssaNoAccForPromotionCap; - DisableGVNLoadPRE = false; - ForgetAllSCEVInLoopUnroll = ForgetSCEVInLoopUnroll; - VerifyInput = false; - VerifyOutput = false; - MergeFunctions = false; - DivergentTarget = false; - CallGraphProfile = true; -} - -PassManagerBuilder::~PassManagerBuilder() { - delete LibraryInfo; - delete Inliner; -} - -/// Set of global extensions, automatically added as part of the standard set. -static ManagedStatic< - SmallVector, - 8>> - GlobalExtensions; -static PassManagerBuilder::GlobalExtensionID GlobalExtensionsCounter; - -/// Check if GlobalExtensions is constructed and not empty. -/// Since GlobalExtensions is a managed static, calling 'empty()' will trigger -/// the construction of the object. -static bool GlobalExtensionsNotEmpty() { - return GlobalExtensions.isConstructed() && !GlobalExtensions->empty(); -} - -PassManagerBuilder::GlobalExtensionID -PassManagerBuilder::addGlobalExtension(PassManagerBuilder::ExtensionPointTy Ty, - PassManagerBuilder::ExtensionFn Fn) { - auto ExtensionID = GlobalExtensionsCounter++; - GlobalExtensions->push_back(std::make_tuple(Ty, std::move(Fn), ExtensionID)); - return ExtensionID; -} - -void PassManagerBuilder::removeGlobalExtension( - PassManagerBuilder::GlobalExtensionID ExtensionID) { - // RegisterStandardPasses may try to call this function after GlobalExtensions - // has already been destroyed; doing so should not generate an error. - if (!GlobalExtensions.isConstructed()) - return; - - auto GlobalExtension = - llvm::find_if(*GlobalExtensions, [ExtensionID](const auto &elem) { - return std::get<2>(elem) == ExtensionID; - }); - assert(GlobalExtension != GlobalExtensions->end() && - "The extension ID to be removed should always be valid."); - - GlobalExtensions->erase(GlobalExtension); -} - -void PassManagerBuilder::addExtension(ExtensionPointTy Ty, ExtensionFn Fn) { - Extensions.push_back(std::make_pair(Ty, std::move(Fn))); -} - -void PassManagerBuilder::addExtensionsToPM(ExtensionPointTy ETy, - legacy::PassManagerBase &PM) const { - if (GlobalExtensionsNotEmpty()) { - for (auto &Ext : *GlobalExtensions) { - if (std::get<0>(Ext) == ETy) - std::get<1>(Ext)(*this, PM); - } - } - for (const auto &[PT, Fn] : Extensions) - if (PT == ETy) - Fn(*this, PM); -} - -void PassManagerBuilder::addInitialAliasAnalysisPasses( - legacy::PassManagerBase &PM) const { - switch (UseCFLAA) { - case ::CFLAAType::Steensgaard: - PM.add(createCFLSteensAAWrapperPass()); - break; - case ::CFLAAType::Andersen: - PM.add(createCFLAndersAAWrapperPass()); - break; - case ::CFLAAType::Both: - PM.add(createCFLSteensAAWrapperPass()); - PM.add(createCFLAndersAAWrapperPass()); - break; - default: - break; - } - - // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that - // BasicAliasAnalysis wins if they disagree. This is intended to help - // support "obvious" type-punning idioms. - PM.add(createTypeBasedAAWrapperPass()); - PM.add(createScopedNoAliasAAWrapperPass()); -} - -void PassManagerBuilder::populateFunctionPassManager( - legacy::FunctionPassManager &FPM) { - addExtensionsToPM(EP_EarlyAsPossible, FPM); - - // Add LibraryInfo if we have some. - if (LibraryInfo) - FPM.add(new TargetLibraryInfoWrapperPass(*LibraryInfo)); - - // The backends do not handle matrix intrinsics currently. - // Make sure they are also lowered in O0. - // FIXME: A lightweight version of the pass should run in the backend - // pipeline on demand. - if (EnableMatrix && OptLevel == 0) - FPM.add(createLowerMatrixIntrinsicsMinimalPass()); - -#ifndef noCbC - if (OptLevel == 0) { - FPM.add(createSROAPass(true)); - } -#else - if (OptLevel == 0) return; -#endif - - addInitialAliasAnalysisPasses(FPM); - - // Lower llvm.expect to metadata before attempting transforms. - // Compare/branch metadata may alter the behavior of passes like SimplifyCFG. - FPM.add(createLowerExpectIntrinsicPass()); - FPM.add(createCFGSimplificationPass()); -#ifndef noCbC - FPM.add(createSROAPass(false)); -#else - FPM.add(createSROAPass()); -#endif - FPM.add(createEarlyCSEPass()); -} - -void PassManagerBuilder::addFunctionSimplificationPasses( - legacy::PassManagerBase &MPM) { - // Start of function pass. - // Break up aggregate allocas, using SSAUpdater. - assert(OptLevel >= 1 && "Calling function optimizer with no optimization level!"); -#ifndef noCbC - MPM.add(createSROAPass(false)); -#else - MPM.add(createSROAPass()); -#endif - MPM.add(createEarlyCSEPass(true /* Enable mem-ssa. */)); // Catch trivial redundancies - if (EnableKnowledgeRetention) - MPM.add(createAssumeSimplifyPass()); - - if (OptLevel > 1) { - if (EnableGVNHoist) - MPM.add(createGVNHoistPass()); - if (EnableGVNSink) { - MPM.add(createGVNSinkPass()); - MPM.add(createCFGSimplificationPass( - SimplifyCFGOptions().convertSwitchRangeToICmp(true))); - } - } - - if (EnableConstraintElimination) - MPM.add(createConstraintEliminationPass()); - - if (OptLevel > 1) { - // Speculative execution if the target has divergent branches; otherwise nop. - MPM.add(createSpeculativeExecutionIfHasBranchDivergencePass()); - - MPM.add(createJumpThreadingPass()); // Thread jumps. - MPM.add(createCorrelatedValuePropagationPass()); // Propagate conditionals - } - MPM.add( - createCFGSimplificationPass(SimplifyCFGOptions().convertSwitchRangeToICmp( - true))); // Merge & remove BBs - // Combine silly seq's - if (OptLevel > 2) - MPM.add(createAggressiveInstCombinerPass()); - MPM.add(createInstructionCombiningPass()); - if (SizeLevel == 0 && !DisableLibCallsShrinkWrap) - MPM.add(createLibCallsShrinkWrapPass()); - addExtensionsToPM(EP_Peephole, MPM); - - // TODO: Investigate the cost/benefit of tail call elimination on debugging. -#ifndef noCbC - MPM.add(createTailCallEliminationPass(false)); // CbC -#else - if (OptLevel > 1) - MPM.add(createTailCallEliminationPass()); // Eliminate tail calls - MPM.add( - createCFGSimplificationPass(SimplifyCFGOptions().convertSwitchRangeToICmp( - true))); // Merge & remove BBs -#endif - MPM.add(createReassociatePass()); // Reassociate expressions - - // The matrix extension can introduce large vector operations early, which can - // benefit from running vector-combine early on. - if (EnableMatrix) - MPM.add(createVectorCombinePass()); - - // Begin the loop pass pipeline. - - // The simple loop unswitch pass relies on separate cleanup passes. Schedule - // them first so when we re-process a loop they run before other loop - // passes. - MPM.add(createLoopInstSimplifyPass()); - MPM.add(createLoopSimplifyCFGPass()); - - // Try to remove as much code from the loop header as possible, - // to reduce amount of IR that will have to be duplicated. However, - // do not perform speculative hoisting the first time as LICM - // will destroy metadata that may not need to be destroyed if run - // after loop rotation. - // TODO: Investigate promotion cap for O1. - MPM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/false)); - // Rotate Loop - disable header duplication at -Oz - MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1, false)); - // TODO: Investigate promotion cap for O1. - MPM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/true)); - MPM.add(createSimpleLoopUnswitchLegacyPass(OptLevel == 3)); - // FIXME: We break the loop pass pipeline here in order to do full - // simplifycfg. Eventually loop-simplifycfg should be enhanced to replace the - // need for this. - MPM.add(createCFGSimplificationPass( - SimplifyCFGOptions().convertSwitchRangeToICmp(true))); - MPM.add(createInstructionCombiningPass()); - // We resume loop passes creating a second loop pipeline here. - if (EnableLoopFlatten) { - MPM.add(createLoopFlattenPass()); // Flatten loops - MPM.add(createLoopSimplifyCFGPass()); - } - MPM.add(createLoopIdiomPass()); // Recognize idioms like memset. - MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars - addExtensionsToPM(EP_LateLoopOptimizations, MPM); - MPM.add(createLoopDeletionPass()); // Delete dead loops - - if (EnableLoopInterchange) - MPM.add(createLoopInterchangePass()); // Interchange loops - - // Unroll small loops and perform peeling. - MPM.add(createSimpleLoopUnrollPass(OptLevel, DisableUnrollLoops, - ForgetAllSCEVInLoopUnroll)); - addExtensionsToPM(EP_LoopOptimizerEnd, MPM); - // This ends the loop pass pipelines. - - // Break up allocas that may now be splittable after loop unrolling. - MPM.add(createSROAPass()); - - if (OptLevel > 1) { - MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds - MPM.add(NewGVN ? createNewGVNPass() - : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies - } - MPM.add(createSCCPPass()); // Constant prop with SCCP - - if (EnableConstraintElimination) - MPM.add(createConstraintEliminationPass()); - - // Delete dead bit computations (instcombine runs after to fold away the dead - // computations, and then ADCE will run later to exploit any new DCE - // opportunities that creates). - MPM.add(createBitTrackingDCEPass()); // Delete dead bit computations - - // Run instcombine after redundancy elimination to exploit opportunities - // opened up by them. - MPM.add(createInstructionCombiningPass()); - addExtensionsToPM(EP_Peephole, MPM); - if (OptLevel > 1) { - if (EnableDFAJumpThreading && SizeLevel == 0) - MPM.add(createDFAJumpThreadingPass()); - - MPM.add(createJumpThreadingPass()); // Thread jumps - MPM.add(createCorrelatedValuePropagationPass()); - } - MPM.add(createAggressiveDCEPass()); // Delete dead instructions - - MPM.add(createMemCpyOptPass()); // Remove memcpy / form memset - // TODO: Investigate if this is too expensive at O1. - if (OptLevel > 1) { - MPM.add(createDeadStoreEliminationPass()); // Delete dead stores - MPM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/true)); - } - - addExtensionsToPM(EP_ScalarOptimizerLate, MPM); - - if (RerollLoops) - MPM.add(createLoopRerollPass()); - - // Merge & remove BBs and sink & hoist common instructions. - MPM.add(createCFGSimplificationPass( - SimplifyCFGOptions().hoistCommonInsts(true).sinkCommonInsts(true))); - // Clean up after everything. - MPM.add(createInstructionCombiningPass()); - addExtensionsToPM(EP_Peephole, MPM); -} - -/// FIXME: Should LTO cause any differences to this set of passes? -void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM, - bool IsFullLTO) { - PM.add(createLoopVectorizePass(!LoopsInterleaved, !LoopVectorize)); - - if (IsFullLTO) { - // The vectorizer may have significantly shortened a loop body; unroll - // again. Unroll small loops to hide loop backedge latency and saturate any - // parallel execution resources of an out-of-order processor. We also then - // need to clean up redundancies and loop invariant code. - // FIXME: It would be really good to use a loop-integrated instruction - // combiner for cleanup here so that the unrolling and LICM can be pipelined - // across the loop nests. - // We do UnrollAndJam in a separate LPM to ensure it happens before unroll - if (EnableUnrollAndJam && !DisableUnrollLoops) - PM.add(createLoopUnrollAndJamPass(OptLevel)); - PM.add(createLoopUnrollPass(OptLevel, DisableUnrollLoops, - ForgetAllSCEVInLoopUnroll)); - PM.add(createWarnMissedTransformationsPass()); - } - - if (!IsFullLTO) { - // Eliminate loads by forwarding stores from the previous iteration to loads - // of the current iteration. - PM.add(createLoopLoadEliminationPass()); - } - // Cleanup after the loop optimization passes. - PM.add(createInstructionCombiningPass()); - - if (OptLevel > 1 && ExtraVectorizerPasses) { - // At higher optimization levels, try to clean up any runtime overlap and - // alignment checks inserted by the vectorizer. We want to track correlated - // runtime checks for two inner loops in the same outer loop, fold any - // common computations, hoist loop-invariant aspects out of any outer loop, - // and unswitch the runtime checks if possible. Once hoisted, we may have - // dead (or speculatable) control flows or more combining opportunities. - PM.add(createEarlyCSEPass()); - PM.add(createCorrelatedValuePropagationPass()); - PM.add(createInstructionCombiningPass()); - PM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/true)); - PM.add(createSimpleLoopUnswitchLegacyPass()); - PM.add(createCFGSimplificationPass( - SimplifyCFGOptions().convertSwitchRangeToICmp(true))); - PM.add(createInstructionCombiningPass()); - } - - // Now that we've formed fast to execute loop structures, we do further - // optimizations. These are run afterward as they might block doing complex - // analyses and transforms such as what are needed for loop vectorization. - - // Cleanup after loop vectorization, etc. Simplification passes like CVP and - // GVN, loop transforms, and others have already run, so it's now better to - // convert to more optimized IR using more aggressive simplify CFG options. - // The extra sinking transform can create larger basic blocks, so do this - // before SLP vectorization. - PM.add(createCFGSimplificationPass(SimplifyCFGOptions() - .forwardSwitchCondToPhi(true) - .convertSwitchRangeToICmp(true) - .convertSwitchToLookupTable(true) - .needCanonicalLoops(false) - .hoistCommonInsts(true) - .sinkCommonInsts(true))); - - if (IsFullLTO) { - PM.add(createSCCPPass()); // Propagate exposed constants - PM.add(createInstructionCombiningPass()); // Clean up again - PM.add(createBitTrackingDCEPass()); - } - - // Optimize parallel scalar instruction chains into SIMD instructions. - if (SLPVectorize) { - PM.add(createSLPVectorizerPass()); - if (OptLevel > 1 && ExtraVectorizerPasses) - PM.add(createEarlyCSEPass()); - } - - // Enhance/cleanup vector code. - PM.add(createVectorCombinePass()); - - if (!IsFullLTO) { - addExtensionsToPM(EP_Peephole, PM); - PM.add(createInstructionCombiningPass()); - - if (EnableUnrollAndJam && !DisableUnrollLoops) { - // Unroll and Jam. We do this before unroll but need to be in a separate - // loop pass manager in order for the outer loop to be processed by - // unroll and jam before the inner loop is unrolled. - PM.add(createLoopUnrollAndJamPass(OptLevel)); - } - - // Unroll small loops - PM.add(createLoopUnrollPass(OptLevel, DisableUnrollLoops, - ForgetAllSCEVInLoopUnroll)); - - if (!DisableUnrollLoops) { - // LoopUnroll may generate some redundency to cleanup. - PM.add(createInstructionCombiningPass()); - - // Runtime unrolling will introduce runtime check in loop prologue. If the - // unrolled loop is a inner loop, then the prologue will be inside the - // outer loop. LICM pass can help to promote the runtime check out if the - // checked value is loop invariant. - PM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/true)); - } - - PM.add(createWarnMissedTransformationsPass()); - } - - // After vectorization and unrolling, assume intrinsics may tell us more - // about pointer alignments. - PM.add(createAlignmentFromAssumptionsPass()); - - if (IsFullLTO) - PM.add(createInstructionCombiningPass()); -} - -void PassManagerBuilder::populateModulePassManager( - legacy::PassManagerBase &MPM) { - MPM.add(createAnnotation2MetadataLegacyPass()); - - // Allow forcing function attributes as a debugging and tuning aid. - MPM.add(createForceFunctionAttrsLegacyPass()); - - // If all optimizations are disabled, just run the always-inline pass and, - // if enabled, the function merging pass. - if (OptLevel == 0) { - if (Inliner) { - MPM.add(Inliner); - Inliner = nullptr; - } - - // FIXME: The BarrierNoopPass is a HACK! The inliner pass above implicitly - // creates a CGSCC pass manager, but we don't want to add extensions into - // that pass manager. To prevent this we insert a no-op module pass to reset - // the pass manager to get the same behavior as EP_OptimizerLast in non-O0 - // builds. The function merging pass is - if (MergeFunctions) - MPM.add(createMergeFunctionsPass()); - else if (GlobalExtensionsNotEmpty() || !Extensions.empty()) - MPM.add(createBarrierNoopPass()); - -#ifndef noCbC - MPM.add(createTailCallEliminationPass(true)); // Eliminate tail calls -#endif - - addExtensionsToPM(EP_EnabledOnOptLevel0, MPM); - - MPM.add(createAnnotationRemarksLegacyPass()); - return; - } - - // Add LibraryInfo if we have some. - if (LibraryInfo) - MPM.add(new TargetLibraryInfoWrapperPass(*LibraryInfo)); - - addInitialAliasAnalysisPasses(MPM); - - // Infer attributes about declarations if possible. - MPM.add(createInferFunctionAttrsLegacyPass()); - - // Infer attributes on declarations, call sites, arguments, etc. - if (AttributorRun & AttributorRunOption::MODULE) - MPM.add(createAttributorLegacyPass()); - - addExtensionsToPM(EP_ModuleOptimizerEarly, MPM); - - if (OptLevel > 2) - MPM.add(createCallSiteSplittingPass()); - - // Propage constant function arguments by specializing the functions. - if (OptLevel > 2 && EnableFunctionSpecialization) - MPM.add(createFunctionSpecializationPass()); - - MPM.add(createIPSCCPPass()); // IP SCCP - MPM.add(createCalledValuePropagationPass()); - - MPM.add(createGlobalOptimizerPass()); // Optimize out global vars - // Promote any localized global vars. - MPM.add(createPromoteMemoryToRegisterPass()); - - MPM.add(createDeadArgEliminationPass()); // Dead argument elimination - - MPM.add(createInstructionCombiningPass()); // Clean up after IPCP & DAE - addExtensionsToPM(EP_Peephole, MPM); - MPM.add( - createCFGSimplificationPass(SimplifyCFGOptions().convertSwitchRangeToICmp( - true))); // Clean up after IPCP & DAE - - // We add a module alias analysis pass here. In part due to bugs in the - // analysis infrastructure this "works" in that the analysis stays alive - // for the entire SCC pass run below. - MPM.add(createGlobalsAAWrapperPass()); - - // Start of CallGraph SCC passes. - bool RunInliner = false; - if (Inliner) { - MPM.add(Inliner); - Inliner = nullptr; - RunInliner = true; - } - - // Infer attributes on declarations, call sites, arguments, etc. for an SCC. - if (AttributorRun & AttributorRunOption::CGSCC) - MPM.add(createAttributorCGSCCLegacyPass()); - - // Try to perform OpenMP specific optimizations. This is a (quick!) no-op if - // there are no OpenMP runtime calls present in the module. - if (OptLevel > 1) - MPM.add(createOpenMPOptCGSCCLegacyPass()); - - MPM.add(createPostOrderFunctionAttrsLegacyPass()); - - addExtensionsToPM(EP_CGSCCOptimizerLate, MPM); - addFunctionSimplificationPasses(MPM); - - // FIXME: This is a HACK! The inliner pass above implicitly creates a CGSCC - // pass manager that we are specifically trying to avoid. To prevent this - // we must insert a no-op module pass to reset the pass manager. - MPM.add(createBarrierNoopPass()); - - if (RunPartialInlining) - MPM.add(createPartialInliningPass()); - - if (OptLevel > 1) - // Remove avail extern fns and globals definitions if we aren't - // compiling an object file for later LTO. For LTO we want to preserve - // these so they are eligible for inlining at link-time. Note if they - // are unreferenced they will be removed by GlobalDCE later, so - // this only impacts referenced available externally globals. - // Eventually they will be suppressed during codegen, but eliminating - // here enables more opportunity for GlobalDCE as it may make - // globals referenced by available external functions dead - // and saves running remaining passes on the eliminated functions. - MPM.add(createEliminateAvailableExternallyPass()); - - MPM.add(createReversePostOrderFunctionAttrsPass()); - - // The inliner performs some kind of dead code elimination as it goes, - // but there are cases that are not really caught by it. We might - // at some point consider teaching the inliner about them, but it - // is OK for now to run GlobalOpt + GlobalDCE in tandem as their - // benefits generally outweight the cost, making the whole pipeline - // faster. - if (RunInliner) { - MPM.add(createGlobalOptimizerPass()); - MPM.add(createGlobalDCEPass()); - } - - // Scheduling LoopVersioningLICM when inlining is over, because after that - // we may see more accurate aliasing. Reason to run this late is that too - // early versioning may prevent further inlining due to increase of code - // size. By placing it just after inlining other optimizations which runs - // later might get benefit of no-alias assumption in clone loop. - if (UseLoopVersioningLICM) { - MPM.add(createLoopVersioningLICMPass()); // Do LoopVersioningLICM - MPM.add(createLICMPass(LicmMssaOptCap, LicmMssaNoAccForPromotionCap, - /*AllowSpeculation=*/true)); - } - - // We add a fresh GlobalsModRef run at this point. This is particularly - // useful as the above will have inlined, DCE'ed, and function-attr - // propagated everything. We should at this point have a reasonably minimal - // and richly annotated call graph. By computing aliasing and mod/ref - // information for all local globals here, the late loop passes and notably - // the vectorizer will be able to use them to help recognize vectorizable - // memory operations. - // - // Note that this relies on a bug in the pass manager which preserves - // a module analysis into a function pass pipeline (and throughout it) so - // long as the first function pass doesn't invalidate the module analysis. - // Thus both Float2Int and LoopRotate have to preserve AliasAnalysis for - // this to work. Fortunately, it is trivial to preserve AliasAnalysis - // (doing nothing preserves it as it is required to be conservatively - // correct in the face of IR changes). - MPM.add(createGlobalsAAWrapperPass()); - - MPM.add(createFloat2IntPass()); - MPM.add(createLowerConstantIntrinsicsPass()); - - if (EnableMatrix) { - MPM.add(createLowerMatrixIntrinsicsPass()); - // CSE the pointer arithmetic of the column vectors. This allows alias - // analysis to establish no-aliasing between loads and stores of different - // columns of the same matrix. - MPM.add(createEarlyCSEPass(false)); - } - - addExtensionsToPM(EP_VectorizerStart, MPM); - - // Re-rotate loops in all our loop nests. These may have fallout out of - // rotated form due to GVN or other transformations, and the vectorizer relies - // on the rotated form. Disable header duplication at -Oz. - MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1, false)); - - // Distribute loops to allow partial vectorization. I.e. isolate dependences - // into separate loop that would otherwise inhibit vectorization. This is - // currently only performed for loops marked with the metadata - // llvm.loop.distribute=true or when -enable-loop-distribute is specified. - MPM.add(createLoopDistributePass()); - - addVectorPasses(MPM, /* IsFullLTO */ false); - - // FIXME: We shouldn't bother with this anymore. - MPM.add(createStripDeadPrototypesPass()); // Get rid of dead prototypes - - // GlobalOpt already deletes dead functions and globals, at -O2 try a - // late pass of GlobalDCE. It is capable of deleting dead cycles. - if (OptLevel > 1) { - MPM.add(createGlobalDCEPass()); // Remove dead fns and globals. - MPM.add(createConstantMergePass()); // Merge dup global constants - } - - // See comment in the new PM for justification of scheduling splitting at - // this stage (\ref buildModuleSimplificationPipeline). - if (EnableHotColdSplit) - MPM.add(createHotColdSplittingPass()); - - if (EnableIROutliner) - MPM.add(createIROutlinerPass()); - - if (MergeFunctions) - MPM.add(createMergeFunctionsPass()); - - // LoopSink pass sinks instructions hoisted by LICM, which serves as a - // canonicalization pass that enables other optimizations. As a result, - // LoopSink pass needs to be a very late IR pass to avoid undoing LICM - // result too early. - MPM.add(createLoopSinkPass()); - // Get rid of LCSSA nodes. - MPM.add(createInstSimplifyLegacyPass()); - - // This hoists/decomposes div/rem ops. It should run after other sink/hoist - // passes to avoid re-sinking, but before SimplifyCFG because it can allow - // flattening of blocks. - MPM.add(createDivRemPairsPass()); - - // LoopSink (and other loop passes since the last simplifyCFG) might have - // resulted in single-entry-single-exit or empty blocks. Clean up the CFG. - MPM.add(createCFGSimplificationPass( - SimplifyCFGOptions().convertSwitchRangeToICmp(true))); - - addExtensionsToPM(EP_OptimizerLast, MPM); - - MPM.add(createAnnotationRemarksLegacyPass()); -} - -LLVMPassManagerBuilderRef LLVMPassManagerBuilderCreate() { - PassManagerBuilder *PMB = new PassManagerBuilder(); - return wrap(PMB); -} - -void LLVMPassManagerBuilderDispose(LLVMPassManagerBuilderRef PMB) { - PassManagerBuilder *Builder = unwrap(PMB); - delete Builder; -} - -void -LLVMPassManagerBuilderSetOptLevel(LLVMPassManagerBuilderRef PMB, - unsigned OptLevel) { - PassManagerBuilder *Builder = unwrap(PMB); - Builder->OptLevel = OptLevel; -} - -void -LLVMPassManagerBuilderSetSizeLevel(LLVMPassManagerBuilderRef PMB, - unsigned SizeLevel) { - PassManagerBuilder *Builder = unwrap(PMB); - Builder->SizeLevel = SizeLevel; -} - -void -LLVMPassManagerBuilderSetDisableUnitAtATime(LLVMPassManagerBuilderRef PMB, - LLVMBool Value) { - // NOTE: The DisableUnitAtATime switch has been removed. -} - -void -LLVMPassManagerBuilderSetDisableUnrollLoops(LLVMPassManagerBuilderRef PMB, - LLVMBool Value) { - PassManagerBuilder *Builder = unwrap(PMB); - Builder->DisableUnrollLoops = Value; -} - -void -LLVMPassManagerBuilderSetDisableSimplifyLibCalls(LLVMPassManagerBuilderRef PMB, - LLVMBool Value) { - // NOTE: The simplify-libcalls pass has been removed. -} - -void -LLVMPassManagerBuilderUseInlinerWithThreshold(LLVMPassManagerBuilderRef PMB, - unsigned Threshold) { - PassManagerBuilder *Builder = unwrap(PMB); - Builder->Inliner = createFunctionInliningPass(Threshold); -} - -void -LLVMPassManagerBuilderPopulateFunctionPassManager(LLVMPassManagerBuilderRef PMB, - LLVMPassManagerRef PM) { - PassManagerBuilder *Builder = unwrap(PMB); - legacy::FunctionPassManager *FPM = unwrap(PM); - Builder->populateFunctionPassManager(*FPM); -} - -void -LLVMPassManagerBuilderPopulateModulePassManager(LLVMPassManagerBuilderRef PMB, - LLVMPassManagerRef PM) { - PassManagerBuilder *Builder = unwrap(PMB); - legacy::PassManagerBase *MPM = unwrap(PM); - Builder->populateModulePassManager(*MPM); -}