xref: /freebsd-10.1-release/contrib/llvm/tools/lldb/include/lldb/Expression/IRInterpreter.h

//===-- IRInterpreter.h -----------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef liblldb_IRInterpreter_h_
#define liblldb_IRInterpreter_h_

#include "lldb/lldb-public.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Core/Stream.h"
#include "lldb/Symbol/TaggedASTType.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Pass.h"

namespace llvm {
    class Function;
    class Module;
}

namespace lldb_private {

class ClangExpressionDeclMap;
class IRMemoryMap;

}

//----------------------------------------------------------------------
/// @class IRInterpreter IRInterpreter.h "lldb/Expression/IRInterpreter.h"
/// @brief Attempt to interpret the function's code if it does not require
///        running the target.
///
/// In some cases, the IR for an expression can be evaluated entirely
/// in the debugger, manipulating variables but not executing any code
/// in the target.  The IRInterpreter attempts to do this.
//----------------------------------------------------------------------
class IRInterpreter
{
public:
    static bool
    CanInterpret (llvm::Module &module,
                  llvm::Function &function,
                  lldb_private::Error &error);

    static bool
    Interpret (llvm::Module &module,
               llvm::Function &function,
               llvm::ArrayRef<lldb::addr_t> args,
               lldb_private::IRMemoryMap &memory_map,
               lldb_private::Error &error,
               lldb::addr_t stack_frame_bottom,
               lldb::addr_t stack_frame_top);

private:
    static bool
    supportsFunction (llvm::Function &llvm_function,
                      lldb_private::Error &err);
};

#endif