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#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- Transform/Utils/CodeMoverUtils.h - CodeMover Utils -------*- 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
//
//===----------------------------------------------------------------------===//
//
// This family of functions determine movements are safe on basic blocks, and
// instructions contained within a function.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_UTILS_CODEMOVERUTILS_H
#define LLVM_TRANSFORMS_UTILS_CODEMOVERUTILS_H
namespace llvm {
class BasicBlock;
class DependenceInfo;
class DominatorTree;
class Instruction;
class PostDominatorTree;
/// Return true if \p I0 and \p I1 are control flow equivalent.
/// Two instructions are control flow equivalent if their basic blocks are
/// control flow equivalent.
bool isControlFlowEquivalent(const Instruction &I0, const Instruction &I1,
const DominatorTree &DT,
const PostDominatorTree &PDT);
/// Return true if \p BB0 and \p BB1 are control flow equivalent.
/// Two basic blocks are control flow equivalent if when one executes, the other
/// is guaranteed to execute.
bool isControlFlowEquivalent(const BasicBlock &BB0, const BasicBlock &BB1,
const DominatorTree &DT,
const PostDominatorTree &PDT);
/// Return true if \p I can be safely moved before \p InsertPoint.
bool isSafeToMoveBefore(Instruction &I, Instruction &InsertPoint,
DominatorTree &DT,
const PostDominatorTree *PDT = nullptr,
DependenceInfo *DI = nullptr);
/// Return true if all instructions (except the terminator) in \p BB can be
/// safely moved before \p InsertPoint.
bool isSafeToMoveBefore(BasicBlock &BB, Instruction &InsertPoint,
DominatorTree &DT,
const PostDominatorTree *PDT = nullptr,
DependenceInfo *DI = nullptr);
/// Move instructions, in an order-preserving manner, from \p FromBB to the
/// beginning of \p ToBB when proven safe.
void moveInstructionsToTheBeginning(BasicBlock &FromBB, BasicBlock &ToBB,
DominatorTree &DT,
const PostDominatorTree &PDT,
DependenceInfo &DI);
/// Move instructions, in an order-preserving manner, from \p FromBB to the end
/// of \p ToBB when proven safe.
void moveInstructionsToTheEnd(BasicBlock &FromBB, BasicBlock &ToBB,
DominatorTree &DT, const PostDominatorTree &PDT,
DependenceInfo &DI);
} // end namespace llvm
#endif // LLVM_TRANSFORMS_UTILS_CODEMOVERUTILS_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
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