llvm/llvm/lib/Transforms/Vectorize/VPlanAnalysis.h

//===- VPlanAnalysis.h - Various Analyses working on VPlan ------*- 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLANANALYSIS_H
#define LLVM_TRANSFORMS_VECTORIZE_VPLANANALYSIS_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/IR/Type.h"

namespace llvm {

class LLVMContext;
class VPValue;
class VPBlendRecipe;
class VPInstruction;
class VPWidenRecipe;
class VPWidenCallRecipe;
class VPWidenIntOrFpInductionRecipe;
class VPWidenMemoryRecipe;
struct VPWidenSelectRecipe;
class VPReplicateRecipe;
class VPRecipeBase;
class VPlan;
class Type;

/// An analysis for type-inference for VPValues.
/// It infers the scalar type for a given VPValue by bottom-up traversing
/// through defining recipes until root nodes with known types are reached (e.g.
/// live-ins or load recipes). The types are then propagated top down through
/// operations.
/// Note that the analysis caches the inferred types. A new analysis object must
/// be constructed once a VPlan has been modified in a way that invalidates any
/// of the previously inferred types.
class VPTypeAnalysis { … };

// Collect a VPlan's ephemeral recipes (those used only by an assume).
void collectEphemeralRecipesForVPlan(VPlan &Plan,
                                     DenseSet<VPRecipeBase *> &EphRecipes);
} // end namespace llvm

#endif // LLVM_TRANSFORMS_VECTORIZE_VPLANANALYSIS_H