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//===---- AlignmentFromAssumptions.h ----------------------------*- 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 file implements a ScalarEvolution-based transformation to set
// the alignments of load, stores and memory intrinsics based on the truth
// expressions of assume intrinsics. The primary motivation is to handle
// complex alignment assumptions that apply to vector loads and stores that
// appear after vectorization and unrolling.
#include "llvm/IR/PassManager.h"
namespace llvm {
class AssumptionCache;
class DominatorTree;
class ScalarEvolution;
class SCEV;
struct AlignmentFromAssumptionsPass
: public PassInfoMixin<AlignmentFromAssumptionsPass> {
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
// Glue for old PM.
bool runImpl(Function &F, AssumptionCache &AC, ScalarEvolution *SE_,
DominatorTree *DT_);
ScalarEvolution *SE = nullptr;
DominatorTree *DT = nullptr;
bool extractAlignmentInfo(CallInst *I, unsigned Idx, Value *&AAPtr,
const SCEV *&AlignSCEV, const SCEV *&OffSCEV);
bool processAssumption(CallInst *I, unsigned Idx);