Absint.Exe_env
Execution environments are a means to get a function's type environment and integer widths and cache those
val get_proc_tenv : IR.Procname.t -> IR.Tenv.t
return the type environment associated with the procedure
val get_source_tenv : IBase.SourceFile.t -> IR.Tenv.t option
return the type environment associated with the source file
val get_integer_type_widths : IR.Procname.t -> IR.IntegerWidths.t
return the integer type widths associated with the procedure