[Bug middle-end/81502] In some cases the data is moved to memory unnecessarily [partial regression]

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81502

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jul 27 12:01:21 2017
New Revision: 250620

URL: https://gcc.gnu.org/viewcvs?rev=250620&root=gcc&view=rev
Log:
2017-07-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81502
        * tree-ssa.c (non_rewritable_lvalue_p): Handle BIT_INSERT_EXPR
        with incompatible but same sized type.
        (execute_update_addresses_taken): Likewise.

        * gcc.target/i386/vect-insert-1.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/vect-insert-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa.c