[Bug middle-end/51389] GCC uses up to 75GB of virtual memory

["abel at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51389

--- Comment #4 from Andrey Belevantsev <abel at gcc dot gnu.org> 2012-01-27 13:47:45 UTC ---
Author: abel
Date: Fri Jan 27 13:47:41 2012
New Revision: 183624

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183624
Log:
        PR middle-end/51389
        * Makefile.in (tree-data-ref.o): Depend on $(PARAMS_H).
        * tree-data-ref.h (find_data_references_in_loop): Remove declaration.
        * tree-data-ref.c (find_data_references_in_loop): Make static.
        (compute_all_dependences): Change return type to bool.  Bail out
        for too many datarefs in a loop.  Move the hunk resetting the data
        dependences vector from ...
        (compute_data_dependences_for_loop): ... here.  Account for
        compute_all_dependences returning false.
        (compute_data_dependences_for_bb): Likewise.
        * params.def (PARAM_LOOP_MAX_DATAREFS_FOR_DATADEPS): New param.
        * doc/invoke.texi (loop-max-datarefs-for-datadeps): Document it.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/doc/invoke.texi
    trunk/gcc/params.def
    trunk/gcc/tree-data-ref.c
    trunk/gcc/tree-data-ref.h