[Bug middle-end/25140] aliases, including weakref, break alias analysis

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25140

--- Comment #15 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Wed Dec  9 19:29:38 2015
New Revision: 231471

URL: https://gcc.gnu.org/viewcvs?rev=231471&root=gcc&view=rev
Log:

        PR ipa/61886
        PR middle-end/25140
        * ipa-reference.c (ipa_reference_get_not_read_global,
        ipa_reference_get_not_read_global): Fix WRT aliases.
        (is_improper): Break out from ...
        (is_proper_for_analysis): ... here; fix WRT aliases.
        (analyze_function, generate_summary,
        ipa_reference_write_optimization_summary,
        ipa_reference_read_optimization_summary): Use ipa_reference_var_uid.
        * ipa-refrence.h (ipa_reference_var_uid): New inline.
        * tree-ssa-alias.c: Revert my accidental previous commit.
        (ref_maybe_used_by_call_p_1,
        call_may_clobber_ref_p_1): Use ipa_reference_var_uid.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-reference.c
    trunk/gcc/tree-ssa-alias.c