------- Comment #1 from dnovillo at google dot com 2008-12-09 20:22 -------
Subject: Re: New: copy-propagation doesn't
handle cycles
On Tue, Dec 9, 2008 at 14:53, rguenth at gcc dot gnu dot org
<[EMAIL PROTECTED]> wrote:
> {
> - phi_val.value = arg;
> + phi_val.value = arg_val->value;
> continue;
> }
This looks OK.
> - rhs_val = get_copy_of_val (rhs);
> + rhs_val = get_last_copy_of (rhs);
We don't want to propagate using get_last_copy_of here. The reason
now escapes me, but it should be documented in the code. It was
related to phi-cycles, but it's been a long time.
Diego.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38458
