.. currentmodule:: llvmlite.binding
A value reference is a wrapper around an LLVM value for you to inspect. You cannot create a value reference yourself. You get them from methods of the :class:`ModuleRef` and :class:`ValueRef` classes.
The linkage types allowed for global values are:
.. data:: external
.. data:: available_externally
.. data:: linkonce_any
.. data:: linkonce_odr
.. data:: linkonce_odr_autohide
.. data:: weak_any
.. data:: weak_odr
.. data:: appending
.. data:: internal
.. data:: private
.. data:: dllimport
.. data:: dllexport
.. data:: external_weak
.. data:: ghost
.. data:: common
.. data:: linker_private
.. data:: linker_private_weak
The visibility styles allowed for global values are:
.. data:: default
.. data:: hidden
.. data:: protected
The storage classes allowed for global values are:
.. data:: default
.. data:: dllimport
.. data:: dllexport
A wrapper around an LLVM value. The attributes available are:
.. attribute:: is_declaration * ``True``---The global value is a mere declaration. * ``False``---The global value is defined in the given module... attribute:: linkage The linkage type---a :class:`Linkage` instance---for this value. This attribute can be set.
.. attribute:: module The module---a :class:`ModuleRef` instance---that this value is defined in.
.. attribute:: function The function---a :class:`ValueRef` instance---that this value is defined in.
.. attribute:: block The basic block---a :class:`ValueRef` instance---that this value is defined in.
.. attribute:: instruction The instruction---a :class:`ValueRef` instance---that this value is defined in.
.. attribute:: name This value's name, as a string. This attribute can be set.
.. attribute:: type This value's LLVM type as :class:`TypeRef` object.
.. attribute:: storage_class The storage class---a :class:`StorageClass` instance---for this value. This attribute can be set.
.. attribute:: visibility The visibility style---a :class:`Visibility` instance---for this value. This attribute can be set.
.. attribute:: blocks An iterator over the basic blocks in this function. Each block is a :class:`ValueRef` instance.
.. attribute:: arguments An iterator over the arguments of this function. Each argument is a :class:`ValueRef` instance.
.. attribute:: instructions An iterator over the instructions in this basic block. Each instruction is a :class:`ValueRef` instance.
.. attribute:: operands An iterator over the operands in this instruction. Each operand is a :class:`ValueRef` instance.
.. attribute:: opcode The instruction's opcode, as a string.
.. attribute:: attributes An iterator over the attributes in this value. Each attribute is a :class:`bytes` instance. Values that have attributes are: function, argument (and others for which attributes support has not been implemented)
.. attribute:: is_global The value is a global variable.
.. attribute:: is_function The value is a function.
.. attribute:: is_argument The value is a function's argument.
.. attribute:: is_block The value is a function's basic block.
.. attribute:: is_instruction The value is a basic block's instruction.
.. attribute:: is_operand The value is a instruction's operand.