mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 10:42:39 +01:00
6516543c4b
The current JumpThreading pass does not jump thread loops since it can
result in irreducible control flow that harms other optimizations. This
prevents switch statements inside a loop from being optimized to use
unconditional branches.
This code pattern occurs in the core_state_transition function of
Coremark. The state machine can be implemented manually with goto
statements resulting in a large runtime improvement, and this transform
makes the switch implementation match the goto version in performance.
This patch specifically targets switch statements inside a loop that
have the opportunity to be threaded. Once it identifies an opportunity,
it creates new paths that branch directly to the correct code block.
For example, the left CFG could be transformed to the right CFG:
```
sw.bb sw.bb
/ | \ / | \
case1 case2 case3 case1 case2 case3
\ | / / | \
latch.bb latch.2 latch.3 latch.1
br sw.bb / | \
sw.bb.2 sw.bb.3 sw.bb.1
br case2 br case3 br case1
```
Co-author: Justin Kreiner @jkreiner
Co-author: Ehsan Amiri @amehsan
Reviewed By: SjoerdMeijer
Differential Revision: https://reviews.llvm.org/D99205
254 lines
11 KiB
C++
254 lines
11 KiB
C++
//===- llvm/LinkAllPasses.h ------------ Reference All Passes ---*- C++ -*-===//
|
|
//
|
|
// 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 header file pulls in all transformation and analysis passes for tools
|
|
// like opt and bugpoint that need this functionality.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LINKALLPASSES_H
|
|
#define LLVM_LINKALLPASSES_H
|
|
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/Analysis/AliasAnalysisEvaluator.h"
|
|
#include "llvm/Analysis/AliasSetTracker.h"
|
|
#include "llvm/Analysis/BasicAliasAnalysis.h"
|
|
#include "llvm/Analysis/CFLAndersAliasAnalysis.h"
|
|
#include "llvm/Analysis/CFLSteensAliasAnalysis.h"
|
|
#include "llvm/Analysis/CallPrinter.h"
|
|
#include "llvm/Analysis/DomPrinter.h"
|
|
#include "llvm/Analysis/GlobalsModRef.h"
|
|
#include "llvm/Analysis/IntervalPartition.h"
|
|
#include "llvm/Analysis/Lint.h"
|
|
#include "llvm/Analysis/Passes.h"
|
|
#include "llvm/Analysis/PostDominators.h"
|
|
#include "llvm/Analysis/RegionPass.h"
|
|
#include "llvm/Analysis/RegionPrinter.h"
|
|
#include "llvm/Analysis/ScalarEvolution.h"
|
|
#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
|
|
#include "llvm/Analysis/ScopedNoAliasAA.h"
|
|
#include "llvm/Analysis/TargetLibraryInfo.h"
|
|
#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
|
|
#include "llvm/CodeGen/Passes.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/IRPrintingPasses.h"
|
|
#include "llvm/Support/Valgrind.h"
|
|
#include "llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h"
|
|
#include "llvm/Transforms/IPO.h"
|
|
#include "llvm/Transforms/IPO/AlwaysInliner.h"
|
|
#include "llvm/Transforms/IPO/Attributor.h"
|
|
#include "llvm/Transforms/IPO/FunctionAttrs.h"
|
|
#include "llvm/Transforms/InstCombine/InstCombine.h"
|
|
#include "llvm/Transforms/Instrumentation.h"
|
|
#include "llvm/Transforms/Instrumentation/BoundsChecking.h"
|
|
#include "llvm/Transforms/ObjCARC.h"
|
|
#include "llvm/Transforms/Scalar.h"
|
|
#include "llvm/Transforms/Scalar/GVN.h"
|
|
#include "llvm/Transforms/Scalar/InstSimplifyPass.h"
|
|
#include "llvm/Transforms/Scalar/Scalarizer.h"
|
|
#include "llvm/Transforms/Utils.h"
|
|
#include "llvm/Transforms/Utils/SymbolRewriter.h"
|
|
#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
|
|
#include "llvm/Transforms/Vectorize.h"
|
|
#include <cstdlib>
|
|
|
|
namespace {
|
|
struct ForcePassLinking {
|
|
ForcePassLinking() {
|
|
// We must reference the passes in such a way that compilers will not
|
|
// delete it all as dead code, even with whole program optimization,
|
|
// yet is effectively a NO-OP. As the compiler isn't smart enough
|
|
// to know that getenv() never returns -1, this will do the job.
|
|
if (std::getenv("bar") != (char*) -1)
|
|
return;
|
|
|
|
(void) llvm::createAAEvalPass();
|
|
(void) llvm::createAggressiveDCEPass();
|
|
(void) llvm::createAggressiveInstCombinerPass();
|
|
(void) llvm::createBitTrackingDCEPass();
|
|
(void)llvm::createOpenMPOptCGSCCLegacyPass();
|
|
(void) llvm::createArgumentPromotionPass();
|
|
(void) llvm::createAlignmentFromAssumptionsPass();
|
|
(void) llvm::createBasicAAWrapperPass();
|
|
(void) llvm::createSCEVAAWrapperPass();
|
|
(void) llvm::createTypeBasedAAWrapperPass();
|
|
(void) llvm::createScopedNoAliasAAWrapperPass();
|
|
(void) llvm::createBoundsCheckingLegacyPass();
|
|
(void) llvm::createBreakCriticalEdgesPass();
|
|
(void) llvm::createCallGraphDOTPrinterPass();
|
|
(void) llvm::createCallGraphViewerPass();
|
|
(void) llvm::createCFGSimplificationPass();
|
|
(void) llvm::createCFLAndersAAWrapperPass();
|
|
(void) llvm::createCFLSteensAAWrapperPass();
|
|
(void) llvm::createStructurizeCFGPass();
|
|
(void) llvm::createLibCallsShrinkWrapPass();
|
|
(void) llvm::createCalledValuePropagationPass();
|
|
(void) llvm::createConstantMergePass();
|
|
(void) llvm::createControlHeightReductionLegacyPass();
|
|
(void) llvm::createCostModelAnalysisPass();
|
|
(void) llvm::createDeadArgEliminationPass();
|
|
(void) llvm::createDeadCodeEliminationPass();
|
|
(void) llvm::createDeadStoreEliminationPass();
|
|
(void) llvm::createDependenceAnalysisWrapperPass();
|
|
(void) llvm::createDomOnlyPrinterPass();
|
|
(void) llvm::createDomPrinterPass();
|
|
(void) llvm::createDomOnlyViewerPass();
|
|
(void) llvm::createDomViewerPass();
|
|
(void) llvm::createGCOVProfilerPass();
|
|
(void) llvm::createPGOInstrumentationGenLegacyPass();
|
|
(void) llvm::createPGOInstrumentationUseLegacyPass();
|
|
(void) llvm::createPGOInstrumentationGenCreateVarLegacyPass();
|
|
(void) llvm::createPGOIndirectCallPromotionLegacyPass();
|
|
(void) llvm::createPGOMemOPSizeOptLegacyPass();
|
|
(void) llvm::createInstrProfilingLegacyPass();
|
|
(void) llvm::createFunctionImportPass();
|
|
(void) llvm::createFunctionInliningPass();
|
|
(void) llvm::createAlwaysInlinerLegacyPass();
|
|
(void) llvm::createGlobalDCEPass();
|
|
(void) llvm::createGlobalOptimizerPass();
|
|
(void) llvm::createGlobalsAAWrapperPass();
|
|
(void) llvm::createGuardWideningPass();
|
|
(void) llvm::createLoopGuardWideningPass();
|
|
(void) llvm::createIPSCCPPass();
|
|
(void) llvm::createInductiveRangeCheckEliminationPass();
|
|
(void) llvm::createIndVarSimplifyPass();
|
|
(void) llvm::createInstSimplifyLegacyPass();
|
|
(void) llvm::createInstructionCombiningPass();
|
|
(void) llvm::createInternalizePass();
|
|
(void) llvm::createLCSSAPass();
|
|
(void) llvm::createLegacyDivergenceAnalysisPass();
|
|
(void) llvm::createLICMPass();
|
|
(void) llvm::createLoopSinkPass();
|
|
(void) llvm::createLazyValueInfoPass();
|
|
(void) llvm::createLoopExtractorPass();
|
|
(void) llvm::createLoopInterchangePass();
|
|
(void) llvm::createLoopFlattenPass();
|
|
(void) llvm::createLoopPredicationPass();
|
|
(void) llvm::createLoopSimplifyPass();
|
|
(void) llvm::createLoopSimplifyCFGPass();
|
|
(void) llvm::createLoopStrengthReducePass();
|
|
(void) llvm::createLoopRerollPass();
|
|
(void) llvm::createLoopUnrollPass();
|
|
(void) llvm::createLoopUnrollAndJamPass();
|
|
(void) llvm::createLoopUnswitchPass();
|
|
(void) llvm::createLoopVersioningLICMPass();
|
|
(void) llvm::createLoopIdiomPass();
|
|
(void) llvm::createLoopRotatePass();
|
|
(void) llvm::createLowerConstantIntrinsicsPass();
|
|
(void) llvm::createLowerExpectIntrinsicPass();
|
|
(void) llvm::createLowerInvokePass();
|
|
(void) llvm::createLowerSwitchPass();
|
|
(void) llvm::createNaryReassociatePass();
|
|
(void) llvm::createObjCARCAAWrapperPass();
|
|
(void) llvm::createObjCARCAPElimPass();
|
|
(void) llvm::createObjCARCExpandPass();
|
|
(void) llvm::createObjCARCContractPass();
|
|
(void) llvm::createObjCARCOptPass();
|
|
(void) llvm::createPAEvalPass();
|
|
(void) llvm::createPromoteMemoryToRegisterPass();
|
|
(void) llvm::createDemoteRegisterToMemoryPass();
|
|
(void) llvm::createPruneEHPass();
|
|
(void) llvm::createPostDomOnlyPrinterPass();
|
|
(void) llvm::createPostDomPrinterPass();
|
|
(void) llvm::createPostDomOnlyViewerPass();
|
|
(void) llvm::createPostDomViewerPass();
|
|
(void) llvm::createReassociatePass();
|
|
(void) llvm::createRedundantDbgInstEliminationPass();
|
|
(void) llvm::createRegionInfoPass();
|
|
(void) llvm::createRegionOnlyPrinterPass();
|
|
(void) llvm::createRegionOnlyViewerPass();
|
|
(void) llvm::createRegionPrinterPass();
|
|
(void) llvm::createRegionViewerPass();
|
|
(void) llvm::createSCCPPass();
|
|
(void) llvm::createSafeStackPass();
|
|
(void) llvm::createSROAPass();
|
|
(void) llvm::createSingleLoopExtractorPass();
|
|
(void) llvm::createStripSymbolsPass();
|
|
(void) llvm::createStripNonDebugSymbolsPass();
|
|
(void) llvm::createStripDeadDebugInfoPass();
|
|
(void) llvm::createStripDeadPrototypesPass();
|
|
(void) llvm::createTailCallEliminationPass();
|
|
(void) llvm::createJumpThreadingPass();
|
|
(void) llvm::createDFAJumpThreadingPass();
|
|
(void) llvm::createUnifyFunctionExitNodesPass();
|
|
(void) llvm::createInstCountPass();
|
|
(void) llvm::createConstantHoistingPass();
|
|
(void) llvm::createCodeGenPreparePass();
|
|
(void) llvm::createEntryExitInstrumenterPass();
|
|
(void) llvm::createPostInlineEntryExitInstrumenterPass();
|
|
(void) llvm::createEarlyCSEPass();
|
|
(void) llvm::createGVNHoistPass();
|
|
(void) llvm::createMergedLoadStoreMotionPass();
|
|
(void) llvm::createGVNPass();
|
|
(void) llvm::createNewGVNPass();
|
|
(void) llvm::createMemCpyOptPass();
|
|
(void) llvm::createLoopDeletionPass();
|
|
(void) llvm::createPostDomTree();
|
|
(void) llvm::createInstructionNamerPass();
|
|
(void) llvm::createMetaRenamerPass();
|
|
(void) llvm::createAttributorLegacyPass();
|
|
(void) llvm::createAttributorCGSCCLegacyPass();
|
|
(void) llvm::createPostOrderFunctionAttrsLegacyPass();
|
|
(void) llvm::createReversePostOrderFunctionAttrsPass();
|
|
(void) llvm::createMergeFunctionsPass();
|
|
(void) llvm::createMergeICmpsLegacyPass();
|
|
(void) llvm::createExpandMemCmpPass();
|
|
(void) llvm::createExpandVectorPredicationPass();
|
|
std::string buf;
|
|
llvm::raw_string_ostream os(buf);
|
|
(void) llvm::createPrintModulePass(os);
|
|
(void) llvm::createPrintFunctionPass(os);
|
|
(void) llvm::createModuleDebugInfoPrinterPass();
|
|
(void) llvm::createPartialInliningPass();
|
|
(void) llvm::createLintLegacyPassPass();
|
|
(void) llvm::createSinkingPass();
|
|
(void) llvm::createLowerAtomicPass();
|
|
(void) llvm::createCorrelatedValuePropagationPass();
|
|
(void) llvm::createMemDepPrinter();
|
|
(void) llvm::createLoopVectorizePass();
|
|
(void) llvm::createSLPVectorizerPass();
|
|
(void) llvm::createLoadStoreVectorizerPass();
|
|
(void) llvm::createVectorCombinePass();
|
|
(void) llvm::createPartiallyInlineLibCallsPass();
|
|
(void) llvm::createScalarizerPass();
|
|
(void) llvm::createSeparateConstOffsetFromGEPPass();
|
|
(void) llvm::createSpeculativeExecutionPass();
|
|
(void) llvm::createSpeculativeExecutionIfHasBranchDivergencePass();
|
|
(void) llvm::createRewriteSymbolsPass();
|
|
(void) llvm::createStraightLineStrengthReducePass();
|
|
(void) llvm::createMemDerefPrinter();
|
|
(void) llvm::createMustExecutePrinter();
|
|
(void) llvm::createMustBeExecutedContextPrinter();
|
|
(void) llvm::createFloat2IntPass();
|
|
(void) llvm::createEliminateAvailableExternallyPass();
|
|
(void)llvm::createScalarizeMaskedMemIntrinLegacyPass();
|
|
(void) llvm::createWarnMissedTransformationsPass();
|
|
(void) llvm::createHardwareLoopsPass();
|
|
(void) llvm::createInjectTLIMappingsLegacyPass();
|
|
(void) llvm::createUnifyLoopExitsPass();
|
|
(void) llvm::createFixIrreduciblePass();
|
|
(void)llvm::createFunctionSpecializationPass();
|
|
|
|
(void)new llvm::IntervalPartition();
|
|
(void)new llvm::ScalarEvolutionWrapperPass();
|
|
llvm::Function::Create(nullptr, llvm::GlobalValue::ExternalLinkage)->viewCFGOnly();
|
|
llvm::RGPassManager RGM;
|
|
llvm::TargetLibraryInfoImpl TLII;
|
|
llvm::TargetLibraryInfo TLI(TLII);
|
|
llvm::AliasAnalysis AA(TLI);
|
|
llvm::AliasSetTracker X(AA);
|
|
X.add(nullptr, llvm::LocationSize::beforeOrAfterPointer(),
|
|
llvm::AAMDNodes()); // for -print-alias-sets
|
|
(void) llvm::AreStatisticsEnabled();
|
|
(void) llvm::sys::RunningOnValgrind();
|
|
}
|
|
} ForcePassLinking; // Force link by creating a global definition.
|
|
}
|
|
|
|
#endif
|