[Bug tree-optimization/91211] [10 Regression] wrong code with __builtin_memset() and __builtin_memcpy() at -O1 and above

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91211

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 19 16:19:39 2019
New Revision: 273605

URL: https://gcc.gnu.org/viewcvs?rev=273605&root=gcc&view=rev
Log:
2019-07-19  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/91211
        * tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Fix
        memset encoding size.

        * gcc.dg/torture/pr91211.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr91211.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c