[Bug ipa/92794] [10 Regression] ICE in decide_about_value, at ipa-cp.c:5186

[fxue at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92794

--- Comment #5 from fxue at gcc dot gnu.org ---
Author: fxue
Date: Thu Dec 19 02:54:40 2019
New Revision: 279561

URL: https://gcc.gnu.org/viewcvs?rev=279561&root=gcc&view=rev
Log:
Handle aggregate pass-through for self-recursive call (PR ipa/92794)

2019-12-19  Feng Xue  <f...@os.amperecomputing.com>

        PR ipa/92794
        * ipa-cp.c (self_recursive_agg_pass_through_p): New function.
        (intersect_with_plats): Use error_mark_node as place holder
        when aggregate jump function is simple pass-through for
        self-recursive call.
        (intersect_with_agg_replacements): Likewise.
        (intersect_aggregates_with_edge): Likewise.
        (find_aggregate_values_for_callers_subset): Likewise.

2019-12-19  Feng Xue  <f...@os.amperecomputing.com>

        PR ipa/92794
        * gcc.dg/ipa/92794.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/ipa/pr92794.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-cp.c
    trunk/gcc/testsuite/ChangeLog