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64e1b28643
The original algorithm only used recursive pair fusion of equal-length types. This is now extended to allow pairing of any types that share the same underlying scalar type. Because we would still generally prefer the 2^n-length types, those are formed first. Then a second set of iterations form the non-2^n-length types. Also, a call to SimplifyInstructionsInBlock has been added after each pairing iteration. This takes care of DCE (and a few other things) that make the following iterations execute somewhat faster. For the same reason, some of the simple shuffle-combination cases are now handled internally. There is some additional refactoring work to be done, but I've had many requests for this feature, so additional refactoring will come soon in future commits (as will additional test cases). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159330 91177308-0d34-0410-b5e6-96231b3b80d8
125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
//===-- Vectorize.h - Vectorization Transformations -------------*- 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 defines prototypes for accessor functions that expose passes
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// in the Vectorize transformations library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_VECTORIZE_H
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#define LLVM_TRANSFORMS_VECTORIZE_H
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namespace llvm {
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class BasicBlock;
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class BasicBlockPass;
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//===----------------------------------------------------------------------===//
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/// @brief Vectorize configuration.
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struct VectorizeConfig {
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//===--------------------------------------------------------------------===//
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// Target architecture related parameters
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/// @brief The size of the native vector registers.
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unsigned VectorBits;
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/// @brief Vectorize boolean values.
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bool VectorizeBools;
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/// @brief Vectorize integer values.
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bool VectorizeInts;
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/// @brief Vectorize floating-point values.
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bool VectorizeFloats;
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/// @brief Vectorize pointer values.
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bool VectorizePointers;
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/// @brief Vectorize casting (conversion) operations.
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bool VectorizeCasts;
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/// @brief Vectorize floating-point math intrinsics.
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bool VectorizeMath;
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/// @brief Vectorize the fused-multiply-add intrinsic.
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bool VectorizeFMA;
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/// @brief Vectorize select instructions.
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bool VectorizeSelect;
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/// @brief Vectorize comparison instructions.
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bool VectorizeCmp;
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/// @brief Vectorize getelementptr instructions.
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bool VectorizeGEP;
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/// @brief Vectorize loads and stores.
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bool VectorizeMemOps;
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/// @brief Only generate aligned loads and stores.
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bool AlignedOnly;
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//===--------------------------------------------------------------------===//
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// Misc parameters
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/// @brief The required chain depth for vectorization.
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unsigned ReqChainDepth;
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/// @brief The maximum search distance for instruction pairs.
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unsigned SearchLimit;
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/// @brief The maximum number of candidate pairs with which to use a full
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/// cycle check.
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unsigned MaxCandPairsForCycleCheck;
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/// @brief Replicating one element to a pair breaks the chain.
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bool SplatBreaksChain;
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/// @brief The maximum number of pairable instructions per group.
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unsigned MaxInsts;
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/// @brief The maximum number of pairing iterations.
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unsigned MaxIter;
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/// @brief Don't try to form odd-length vectors.
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bool Pow2LenOnly;
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/// @brief Don't boost the chain-depth contribution of loads and stores.
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bool NoMemOpBoost;
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/// @brief Use a fast instruction dependency analysis.
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bool FastDep;
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/// @brief Initialize the VectorizeConfig from command line options.
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VectorizeConfig();
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};
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//===----------------------------------------------------------------------===//
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//
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// BBVectorize - A basic-block vectorization pass.
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//
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BasicBlockPass *
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createBBVectorizePass(const VectorizeConfig &C = VectorizeConfig());
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//===----------------------------------------------------------------------===//
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/// @brief Vectorize the BasicBlock.
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///
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/// @param BB The BasicBlock to be vectorized
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/// @param P The current running pass, should require AliasAnalysis and
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/// ScalarEvolution. After the vectorization, AliasAnalysis,
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/// ScalarEvolution and CFG are preserved.
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///
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/// @return True if the BB is changed, false otherwise.
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///
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bool vectorizeBasicBlock(Pass *P, BasicBlock &BB,
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const VectorizeConfig &C = VectorizeConfig());
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} // End llvm namespace
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#endif
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