[Bug middle-end/58981] movmem/setmem use mode wider than Pmode for size

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58981

--- Comment #8 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Nov  5 14:17:33 2013
New Revision: 204394

URL: http://gcc.gnu.org/viewcvs?rev=204394&root=gcc&view=rev
Log:
Don't use mode wider than Pmode for size in movmem/setmem

gcc/

    PR middle-end/58981
    * doc/md.texi (@code{movmem@var{m}}): Specify Pmode as mode of
    pattern, instead of word_mode.

    * expr.c (emit_block_move_via_movmem): Don't use mode wider than
    Pmode for size.
    (set_storage_via_setmem): Likewise.

gcc/testsuite/

    PR middle-end/58981
    * gcc.dg/pr58981.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr58981.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/md.texi
    trunk/gcc/expr.c
    trunk/gcc/testsuite/ChangeLog