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//===----- DebugUtils.h - Utilities for debugging ORC JITs ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Utilities for debugging ORC-based JITs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORC_DEBUGUTILS_H
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#define LLVM_EXECUTIONENGINE_ORC_DEBUGUTILS_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ExecutionEngine/Orc/Core.h"
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#include "llvm/ExecutionEngine/Orc/SymbolStringPool.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_ostream.h"
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#include <memory>
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#include <string>
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namespace llvm {
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class MemoryBuffer;
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namespace orc {
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// --raw_ostream operators for ORC types--
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/// Render a SymbolStringPtr.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolStringPtr &Sym);
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/// Render a SymbolNameSet.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolNameSet &Symbols);
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/// Render a SymbolNameVector.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolNameVector &Symbols);
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/// Render an array of SymbolStringPtrs.
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raw_ostream &operator<<(raw_ostream &OS, ArrayRef<SymbolStringPtr> Symbols);
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/// Render JITSymbolFlags.
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raw_ostream &operator<<(raw_ostream &OS, const JITSymbolFlags &Flags);
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/// Render a SymbolFlagsMap entry.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolFlagsMap::value_type &KV);
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/// Render a SymbolMap entry.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolMap::value_type &KV);
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/// Render a SymbolFlagsMap.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolFlagsMap &SymbolFlags);
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/// Render a SymbolMap.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolMap &Symbols);
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/// Render a SymbolDependenceMap entry.
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raw_ostream &operator<<(raw_ostream &OS,
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                        const SymbolDependenceMap::value_type &KV);
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/// Render a SymbolDependendeMap.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolDependenceMap &Deps);
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/// Render a MaterializationUnit.
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raw_ostream &operator<<(raw_ostream &OS, const MaterializationUnit &MU);
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//// Render a JITDylibLookupFlags instance.
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raw_ostream &operator<<(raw_ostream &OS,
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                        const JITDylibLookupFlags &JDLookupFlags);
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/// Rendar a SymbolLookupFlags instance.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolLookupFlags &LookupFlags);
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/// Render a SymbolLookupSet entry.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolLookupSet::value_type &KV);
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/// Render a SymbolLookupSet.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolLookupSet &LookupSet);
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/// Render a JITDylibSearchOrder.
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raw_ostream &operator<<(raw_ostream &OS,
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                        const JITDylibSearchOrder &SearchOrder);
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/// Render a SymbolAliasMap.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolAliasMap &Aliases);
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/// Render a SymbolState.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolState &S);
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/// Render a LookupKind.
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raw_ostream &operator<<(raw_ostream &OS, const LookupKind &K);
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/// Dump a SymbolStringPool. Useful for debugging dangling-pointer crashes.
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raw_ostream &operator<<(raw_ostream &OS, const SymbolStringPool &SSP);
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/// A function object that can be used as an ObjectTransformLayer transform
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/// to dump object files to disk at a specified path.
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class DumpObjects {
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public:
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  /// Construct a DumpObjects transform that will dump objects to disk.
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  ///
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  /// @param DumpDir specifies the path to write dumped objects to. DumpDir may
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  /// be empty, in which case files will be dumped to the working directory. If
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  /// DumpDir is non-empty then any trailing separators will be discarded.
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  ///
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  /// @param IdentifierOverride specifies a file name stem to use when dumping
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  /// objects. If empty, each MemoryBuffer's identifier will be used (with a .o
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  /// suffix added if not already present). If an identifier override is
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  /// supplied it will be used instead (since all buffers will use the same
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  /// identifier, the resulting files will be named <ident>.o, <ident>.2.o,
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  /// <ident>.3.o, and so on). IdentifierOverride should not contain an
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  /// extension, as a .o suffix will be added by DumpObjects.
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  DumpObjects(std::string DumpDir = "", std::string IdentifierOverride = "");
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  /// Dumps the given buffer to disk.
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  Expected<std::unique_ptr<MemoryBuffer>>
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  operator()(std::unique_ptr<MemoryBuffer> Obj);
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private:
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  StringRef getBufferIdentifier(MemoryBuffer &B);
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  std::string DumpDir;
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  std::string IdentifierOverride;
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};
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} // End namespace orc
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} // End namespace llvm
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#endif // LLVM_EXECUTIONENGINE_ORC_DEBUGUTILS_H