This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [tree-ssa]: Reduce size of phi nodes by 31 bits
- From: Richard Henderson <rth at redhat dot com>
- To: Daniel Berlin <dberlin at dberlin dot org>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Diego Novillo <dnovillo at redhat dot com>
- Date: Tue, 30 Dec 2003 14:27:47 -0800
- Subject: Re: [tree-ssa]: Reduce size of phi nodes by 31 bits
- References: <CA51D1BD-3A5C-11D8-8825-000A95DA505C@dberlin.org>
On Mon, Dec 29, 2003 at 07:12:01PM -0500, Daniel Berlin wrote:
> - int rewritten;
> + unsigned int rewritten:1;
>
> struct phi_arg_d GTY ((length ("((tree)&%h)->phi.capacity"))) a[1];
You will note that this doesn't reduce the size of anything.
Just exchanges data for padding.
r~