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https://github.com/c64scene-ar/llvm-6502.git
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8383b539ff
This commit adds the infrastructure for performing bottom-up SLP vectorization (and other optimizations) on parallel computations.
The infrastructure has three potential users:
1. The loop vectorizer needs to be able to vectorize AOS data structures such as (sum += A[i] + A[i+1]).
2. The BB-vectorizer needs this infrastructure for bottom-up SLP vectorization, because bottom-up vectorization is faster to compute.
3. A loop-roller needs to be able to analyze consecutive chains and roll them into a loop, in order to reduce code size. A loop roller does not need to create vector instructions, and this infrastructure separates the chain analysis from the vectorization.
This patch also includes a simple (100 LOC) bottom up SLP vectorizer that uses the infrastructure, and can vectorize this code:
void SAXPY(int *x, int *y, int a, int i) {
x[i] = a * x[i] + y[i];
x[i+1] = a * x[i+1] + y[i+1];
x[i+2] = a * x[i+2] + y[i+2];
x[i+3] = a * x[i+3] + y[i+3];
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179117 91177308-0d34-0410-b5e6-96231b3b80d8
180 lines
7.6 KiB
C++
180 lines
7.6 KiB
C++
//===- llvm/LinkAllPasses.h ------------ Reference All Passes ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file pulls in all transformation and analysis passes for tools
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// like opt and bugpoint that need this functionality.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LINKALLPASSES_H
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#define LLVM_LINKALLPASSES_H
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#include "llvm/Analysis/AliasSetTracker.h"
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#include "llvm/Analysis/CallPrinter.h"
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#include "llvm/Analysis/DomPrinter.h"
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#include "llvm/Analysis/FindUsedTypes.h"
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#include "llvm/Analysis/IntervalPartition.h"
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#include "llvm/Analysis/Lint.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Analysis/PostDominators.h"
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#include "llvm/Analysis/RegionPass.h"
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#include "llvm/Analysis/RegionPrinter.h"
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#include "llvm/Analysis/ScalarEvolution.h"
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#include "llvm/Assembly/PrintModulePass.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/Instrumentation.h"
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#include "llvm/Transforms/ObjCARC.h"
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#include "llvm/Transforms/Scalar.h"
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#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
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#include "llvm/Transforms/Vectorize.h"
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#include <cstdlib>
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namespace {
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struct ForcePassLinking {
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ForcePassLinking() {
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// We must reference the passes in such a way that compilers will not
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// delete it all as dead code, even with whole program optimization,
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// yet is effectively a NO-OP. As the compiler isn't smart enough
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// to know that getenv() never returns -1, this will do the job.
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if (std::getenv("bar") != (char*) -1)
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return;
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(void) llvm::createAAEvalPass();
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(void) llvm::createAggressiveDCEPass();
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(void) llvm::createAliasAnalysisCounterPass();
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(void) llvm::createAliasDebugger();
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(void) llvm::createArgumentPromotionPass();
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(void) llvm::createBasicAliasAnalysisPass();
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(void) llvm::createLibCallAliasAnalysisPass(0);
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(void) llvm::createScalarEvolutionAliasAnalysisPass();
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(void) llvm::createTypeBasedAliasAnalysisPass();
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(void) llvm::createBlockPlacementPass();
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(void) llvm::createBoundsCheckingPass();
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(void) llvm::createBreakCriticalEdgesPass();
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(void) llvm::createCallGraphPrinterPass();
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(void) llvm::createCallGraphViewerPass();
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(void) llvm::createCFGSimplificationPass();
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(void) llvm::createConstantMergePass();
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(void) llvm::createConstantPropagationPass();
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(void) llvm::createCostModelAnalysisPass();
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(void) llvm::createDeadArgEliminationPass();
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(void) llvm::createDeadCodeEliminationPass();
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(void) llvm::createDeadInstEliminationPass();
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(void) llvm::createDeadStoreEliminationPass();
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(void) llvm::createDependenceAnalysisPass();
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(void) llvm::createDomOnlyPrinterPass();
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(void) llvm::createDomPrinterPass();
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(void) llvm::createDomOnlyViewerPass();
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(void) llvm::createDomViewerPass();
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(void) llvm::createEdgeProfilerPass();
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(void) llvm::createOptimalEdgeProfilerPass();
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(void) llvm::createPathProfilerPass();
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(void) llvm::createGCOVProfilerPass();
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(void) llvm::createFunctionInliningPass();
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(void) llvm::createAlwaysInlinerPass();
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(void) llvm::createGlobalDCEPass();
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(void) llvm::createGlobalOptimizerPass();
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(void) llvm::createGlobalsModRefPass();
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(void) llvm::createIPConstantPropagationPass();
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(void) llvm::createIPSCCPPass();
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(void) llvm::createIndVarSimplifyPass();
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(void) llvm::createInstructionCombiningPass();
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(void) llvm::createInternalizePass();
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(void) llvm::createLCSSAPass();
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(void) llvm::createLICMPass();
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(void) llvm::createLazyValueInfoPass();
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(void) llvm::createLoopExtractorPass();
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(void) llvm::createLoopSimplifyPass();
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(void) llvm::createLoopStrengthReducePass();
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(void) llvm::createLoopUnrollPass();
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(void) llvm::createLoopUnswitchPass();
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(void) llvm::createLoopIdiomPass();
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(void) llvm::createLoopRotatePass();
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(void) llvm::createLowerExpectIntrinsicPass();
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(void) llvm::createLowerInvokePass();
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(void) llvm::createLowerSwitchPass();
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(void) llvm::createNoAAPass();
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(void) llvm::createNoProfileInfoPass();
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(void) llvm::createObjCARCAliasAnalysisPass();
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(void) llvm::createObjCARCAPElimPass();
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(void) llvm::createObjCARCExpandPass();
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(void) llvm::createObjCARCContractPass();
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(void) llvm::createObjCARCOptPass();
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(void) llvm::createProfileEstimatorPass();
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(void) llvm::createProfileVerifierPass();
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(void) llvm::createPathProfileVerifierPass();
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(void) llvm::createProfileLoaderPass();
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(void) llvm::createProfileMetadataLoaderPass();
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(void) llvm::createPathProfileLoaderPass();
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(void) llvm::createPromoteMemoryToRegisterPass();
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(void) llvm::createDemoteRegisterToMemoryPass();
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(void) llvm::createPruneEHPass();
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(void) llvm::createPostDomOnlyPrinterPass();
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(void) llvm::createPostDomPrinterPass();
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(void) llvm::createPostDomOnlyViewerPass();
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(void) llvm::createPostDomViewerPass();
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(void) llvm::createReassociatePass();
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(void) llvm::createRegionInfoPass();
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(void) llvm::createRegionOnlyPrinterPass();
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(void) llvm::createRegionOnlyViewerPass();
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(void) llvm::createRegionPrinterPass();
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(void) llvm::createRegionViewerPass();
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(void) llvm::createSCCPPass();
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(void) llvm::createScalarReplAggregatesPass();
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(void) llvm::createSimplifyLibCallsPass();
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(void) llvm::createSingleLoopExtractorPass();
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(void) llvm::createStripSymbolsPass();
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(void) llvm::createStripNonDebugSymbolsPass();
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(void) llvm::createStripDeadDebugInfoPass();
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(void) llvm::createStripDeadPrototypesPass();
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(void) llvm::createTailCallEliminationPass();
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(void) llvm::createJumpThreadingPass();
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(void) llvm::createUnifyFunctionExitNodesPass();
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(void) llvm::createInstCountPass();
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(void) llvm::createCodeGenPreparePass();
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(void) llvm::createEarlyCSEPass();
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(void) llvm::createGVNPass();
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(void) llvm::createMemCpyOptPass();
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(void) llvm::createLoopDeletionPass();
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(void) llvm::createPostDomTree();
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(void) llvm::createInstructionNamerPass();
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(void) llvm::createMetaRenamerPass();
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(void) llvm::createFunctionAttrsPass();
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(void) llvm::createMergeFunctionsPass();
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(void) llvm::createPrintModulePass(0);
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(void) llvm::createPrintFunctionPass("", 0);
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(void) llvm::createPrintBasicBlockPass(0);
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(void) llvm::createModuleDebugInfoPrinterPass();
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(void) llvm::createPartialInliningPass();
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(void) llvm::createLintPass();
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(void) llvm::createSinkingPass();
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(void) llvm::createLowerAtomicPass();
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(void) llvm::createCorrelatedValuePropagationPass();
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(void) llvm::createMemDepPrinter();
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(void) llvm::createInstructionSimplifierPass();
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(void) llvm::createLoopVectorizePass();
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(void) llvm::createSLPVectorizerPass();
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(void) llvm::createBBVectorizePass();
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(void)new llvm::IntervalPartition();
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(void)new llvm::FindUsedTypes();
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(void)new llvm::ScalarEvolution();
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((llvm::Function*)0)->viewCFGOnly();
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llvm::RGPassManager RGM;
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((llvm::RegionPass*)0)->runOnRegion((llvm::Region*)0, RGM);
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llvm::AliasSetTracker X(*(llvm::AliasAnalysis*)0);
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X.add((llvm::Value*)0, 0, 0); // for -print-alias-sets
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}
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} ForcePassLinking; // Force link by creating a global definition.
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}
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#endif
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