blob: fb1687e1ac5dea3071dd81b4ee396a954252d8e2 [file] [log] [blame]
//===---- 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/Analysis/ScalarEvolution.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
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, Value *&AAPtr, const SCEV *&AlignSCEV,
const SCEV *&OffSCEV);
bool processAssumption(CallInst *I);