https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89656

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Mar 11 21:58:43 2019
New Revision: 269597

URL: https://gcc.gnu.org/viewcvs?rev=269597&root=gcc&view=rev
Log:
        PR middle-end/89655
        PR bootstrap/89656
        * vr-values.c (vr_values::update_value_range): If
        old_vr->varying_p (), don't update it, make new_vr also VARYING
        and return false.

        * gcc.c-torture/compile/pr89655.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr89655.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/vr-values.c

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