================ @@ -0,0 +1,168 @@ +//===- bolt/Core/MCInstUtils.h ----------------------------------*- 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 BOLT_CORE_MCINSTUTILS_H +#define BOLT_CORE_MCINSTUTILS_H + +#include "bolt/Core/BinaryBasicBlock.h" + +#include <map> +#include <tuple> +#include <variant> + +namespace llvm { +namespace bolt { + +class BinaryFunction; + +/// MCInstReference represents a reference to a constant MCInst as stored either +/// in a BinaryFunction (i.e. before a CFG is created), or in a BinaryBasicBlock +/// (after a CFG is created). +class MCInstReference { + using nocfg_const_iterator = std::map<uint32_t, MCInst>::const_iterator; + + // Two cases are possible: + // * functions with CFG reconstructed - a function stores a collection of + // basic blocks, each basic block stores a contiguous vector of MCInst + // * functions without CFG - there are no basic blocks created, + // the instructions are directly stored in std::map in BinaryFunction + // + // In both cases, the direct parent of MCInst is stored together with an + // iterator pointing to the instruction. + + // Helper struct: CFG is available, the direct parent is a basic block, + // iterator's type is `MCInst *`. + struct RefInBB { + RefInBB(const BinaryBasicBlock *BB, const MCInst *Inst) + : BB(BB), It(Inst) {} + RefInBB(const RefInBB &Other) = default; + RefInBB &operator=(const RefInBB &Other) = default; + + const BinaryBasicBlock *BB; + BinaryBasicBlock::const_iterator It; + + bool operator<(const RefInBB &Other) const { ---------------- maksfb wrote:
What are expected uses for this comparison? I'm concerned about non-deterministic order of `BinaryBasicBlock *`. https://github.com/llvm/llvm-project/pull/138655 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
