------- Additional Comments From pinskia at gcc dot gnu dot org 2004-01-04
07:50 -------
What about expanding (set (mem:DI ...) (const_int 0)) at expand time, this will
cause more
opportunities to happen and then the discusion is up to other parts of the
compiler.
It looks like an easy change to ix86_expand_move.
Also interesting is that this testcase:
void
foo (long *p)
{
*p = 0;
p[1] = 0;
}
Does not use the xor trick either.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11877
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