[Bug middle-end/91195] [10 regression] incorrect may be used uninitialized smw (272711, 273474]

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91195

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Nov 20 08:26:52 2019
New Revision: 278479

URL: https://gcc.gnu.org/viewcvs?rev=278479&root=gcc&view=rev
Log:
        PR middle-end/91195
        * tree-ssa-phiopt.c (cond_store_replacement): Move lhs unsharing
        earlier.  Set TREE_NO_WARNING on the rhs1 of the artificially added
        load.

        * gcc.dg/pr91195.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr91195.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c