[Bug middle-end/80262] address space gets lost in memory access

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80262

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Apr  6 12:31:05 2017
New Revision: 246728

URL: https://gcc.gnu.org/viewcvs?rev=246728&root=gcc&view=rev
Log:
2017-04-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/80262
        * tree-sra.c (build_ref_for_offset): Preserve address-space
        information.
        * tree-ssa-sccvn.c (vn_reference_maybe_forwprop_address):
        Drop useless address-space information on MEM_REF offsets.

        * gcc.target/i386/pr80262.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr80262.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-sra.c
    trunk/gcc/tree-ssa-sccvn.c