[Bug c/60819] dse1 removing not-dead insn (aliasing issue?)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60819

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Apr 14 11:49:42 2014
New Revision: 209365

URL: http://gcc.gnu.org/viewcvs?rev=209365&root=gcc&view=rev
Log:
2014-04-14  Richard Biener  <rguent...@suse.de>
    Marc Glisse  <marc.gli...@inria.fr>

    PR c/60819
    c-family/
    * c-common.c (convert_vector_to_pointer_for_subscript): Properly
    apply may-alias the scalar pointer type when applicable.

    * gcc.target/i386/vec-may_alias.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/vec-may_alias.c
Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/testsuite/ChangeLog