This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Question re: SSA Aggressive Dead Code Elimination
- To: Diego Novillo <dnovillo at redhat dot com>
- Subject: Re: Question re: SSA Aggressive Dead Code Elimination
- From: law at redhat dot com
- Date: Wed, 27 Jun 2001 12:10:17 -0700
- cc: Daniel Berlin <dan at www dot cgsoftware dot com>, gcc at gcc dot gnu dot org
- Reply-To: law at redhat dot com
In message <20010627145951.A20048@tornado.cygnus.com>you write:
> On Wed, 27 Jun 2001, Daniel Berlin wrote:
>
> > > Nope. What we ended up having was a trivially dead phi term.
> >
> > You are making the same mistake I did.
> > The phi term *isn't* trivially dead. And because it's not dead, the jump
> > instruction in the block the phi node has for that term, should be marked
> > important, so it doesn't become unconditional.
> >
> Yup. I can't read RTL to save my life.
Reading RTL is one thing I *can* do :-) I certainly prefer it over assembly,
and it's something easier to grok than C source :-)
jeff