[Bug tree-optimization/58483] missing optimization opportunity for const std::vector compared to std::array

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58483

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jul  2 07:35:23 2019
New Revision: 272922

URL: https://gcc.gnu.org/viewcvs?rev=272922&root=gcc&view=rev
Log:
2019-07-02  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/58483
        * tree-ssa-scopedtables.c (avail_expr_hash): Use OEP_ADDRESS_OF
        for MEM_REF base hashing.
        (equal_mem_array_ref_p): Likewise for base comparison.

        * gcc.dg/tree-ssa/ssa-dom-cse-8.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-8.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-scopedtables.c