[Bug tree-optimization/84486] [7/8 Regression] code hoisting removes alignment assumption

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84486

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar  5 15:00:48 2018
New Revision: 258249

URL: https://gcc.gnu.org/viewcvs?rev=258249&root=gcc&view=rev
Log:
2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84486
        * tree-ssa-pre.c (create_expression_by_pieces): Remove dead code.
        When inserting a __builtin_assume_aligned call set the LHS
        SSA name alignment info accordingly.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-pre.c