Make LDC work with LLVM trunk (s/LinkOnceLinkage/LinkOnceOdrLinkage/) Also moved the #defines for linkage types into a separate header instead of mars.h so we can #include revisions.h without having to rebuild the entire frontend every time we update. (I'm using revisions.h to get the LLVM revision for use in preprocessor conditionals. It should work with LLVM release 2.5, old trunk and new trunk)

#ifndef LDC_IR_IRTYPE_H
#define LDC_IR_IRTYPE_H

#include <set>

namespace llvm {
    class PATypeHolder;
}

struct IrType
{
    static std::set<IrType*> list;
    static void resetAll();

    // overload all of these to make sure
    // the static list is up to date
    IrType();
    IrType(const IrType& s);
    ~IrType();

    void reset();

    llvm::PATypeHolder* type;
};

#endif