mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Alessandro Di Federico
1429b526ab
This commit drops libptc in favor of its new form libtcg. It brings several improvements, among which: * The QEMU version we work on has been upgraded. * CPUStateAccessAnalysis has been reimplemented in a way that makes it easier to debug and solves some limitations (e.g., tracking leaking pointers). * Identification of pieces of the CPU state that are read by each helper and fixing access to the CPU state is now performed at build-time. * We no longer mmap the code we need to translate, dropping all the issues related to code that needed to be mapped where something is already present. * We now have two distinct flavors of helper modules: the full one and the "slim" one. The latter contains the definition only of functions we intend to inline. It is used in most of the pipeline, a good thing since we spend less time optimizing code we don't really care about. The full module is only used on the re-compilation branch of the pipeline. * We no longer split the `cpu_loop` function. * We change MetaAddress to rely on architectures from `model::` as opposed to the LLVM ones. * We no longer attach debug info to LLVM IR containing the original assembly. * We now verify that the lifted code only contains code we expect.
33 lines
630 B
C++
33 lines
630 B
C++
#pragma once
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//
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// This file is distributed under the MIT License. See LICENSE.md for details.
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//
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#include <map>
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#include <tuple>
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#include "llvm/IR/ModuleSlotTracker.h"
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#include "revng/ADT/ConstantRangeSet.h"
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namespace llvm {
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class Value;
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class Module;
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} // namespace llvm
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class DataFlowRangeAnalysis {
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public:
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using CacheEntry = std::pair<llvm::Value *, llvm::Value *>;
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private:
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std::map<CacheEntry, ConstantRangeSet> Cache;
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llvm::ModuleSlotTracker MST;
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public:
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DataFlowRangeAnalysis(llvm::Module &M) : MST(&M, false) {}
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public:
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std::optional<ConstantRangeSet> visit(llvm::Value &I, llvm::Value &Variable);
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};
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