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//===-- Vectorize.h - Vectorization Transformations -------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This header file defines prototypes for accessor functions that expose passes
// in the Vectorize transformations library.
namespace llvm {
class BasicBlock;
class Pass;
/// Vectorize configuration.
struct VectorizeConfig {
// Target architecture related parameters
/// The size of the native vector registers.
unsigned VectorBits;
/// Vectorize boolean values.
bool VectorizeBools;
/// Vectorize integer values.
bool VectorizeInts;
/// Vectorize floating-point values.
bool VectorizeFloats;
/// Vectorize pointer values.
bool VectorizePointers;
/// Vectorize casting (conversion) operations.
bool VectorizeCasts;
/// Vectorize floating-point math intrinsics.
bool VectorizeMath;
/// Vectorize bit intrinsics.
bool VectorizeBitManipulations;
/// Vectorize the fused-multiply-add intrinsic.
bool VectorizeFMA;
/// Vectorize select instructions.
bool VectorizeSelect;
/// Vectorize comparison instructions.
bool VectorizeCmp;
/// Vectorize getelementptr instructions.
bool VectorizeGEP;
/// Vectorize loads and stores.
bool VectorizeMemOps;
/// Only generate aligned loads and stores.
bool AlignedOnly;
// Misc parameters
/// The required chain depth for vectorization.
unsigned ReqChainDepth;
/// The maximum search distance for instruction pairs.
unsigned SearchLimit;
/// The maximum number of candidate pairs with which to use a full
/// cycle check.
unsigned MaxCandPairsForCycleCheck;
/// Replicating one element to a pair breaks the chain.
bool SplatBreaksChain;
/// The maximum number of pairable instructions per group.
unsigned MaxInsts;
/// The maximum number of candidate instruction pairs per group.
unsigned MaxPairs;
/// The maximum number of pairing iterations.
unsigned MaxIter;
/// Don't try to form odd-length vectors.
bool Pow2LenOnly;
/// Don't boost the chain-depth contribution of loads and stores.
bool NoMemOpBoost;
/// Use a fast instruction dependency analysis.
bool FastDep;
/// Initialize the VectorizeConfig from command line options.
// LoopVectorize - Create a loop vectorization pass.
Pass *createLoopVectorizePass();
Pass *createLoopVectorizePass(bool InterleaveOnlyWhenForced,
bool VectorizeOnlyWhenForced);
// SLPVectorizer - Create a bottom-up SLP vectorizer pass.
Pass *createSLPVectorizerPass();
/// Vectorize the BasicBlock.
/// @param BB The BasicBlock to be vectorized
/// @param P The current running pass, should require AliasAnalysis and
/// ScalarEvolution. After the vectorization, AliasAnalysis,
/// ScalarEvolution and CFG are preserved.
/// @return True if the BB is changed, false otherwise.
bool vectorizeBasicBlock(Pass *P, BasicBlock &BB,
const VectorizeConfig &C = VectorizeConfig());
// LoadStoreVectorizer - Create vector loads and stores, but leave scalar
// operations.
Pass *createLoadStoreVectorizerPass();
} // End llvm namespace