llvm/llvm/lib/Transforms/Scalar/InferAlignment.cpp

//===- InferAlignment.cpp -------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Infer alignment for load, stores and other memory operations based on
// trailing zero known bits information.
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Scalar/InferAlignment.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Instructions.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/Local.h"

usingnamespacellvm;

static bool tryToImproveAlign(
    const DataLayout &DL, Instruction *I,
    function_ref<Align(Value *PtrOp, Align OldAlign, Align PrefAlign)> Fn) { … }

bool inferAlignment(Function &F, AssumptionCache &AC, DominatorTree &DT) { … }

PreservedAnalyses InferAlignmentPass::run(Function &F,
                                          FunctionAnalysisManager &AM) { … }