> -Original Message-
> From: Jeff Law [mailto:l...@redhat.com]
> Sent: Friday, November 09, 2012 9:58 PM
> To: Bin Cheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH Version 2][RFA]Improving register pressure directed
hoist
>
> On 11/07/2012 02:05 PM, Bin
On 11/07/2012 02:05 PM, Bin Cheng wrote:
2012-11-08 Bin Cheng
* gcse.c: (struct bb_data): Add new fields, old_pressure, live_in
and backup.
(calculate_bb_reg_pressure): Initialize live_in and backup.
(update_bb_reg_pressure): New.
(should_hoist_expr_to
ving register pressure directed
hoist
>
>
>
> > -Original Message-
> > From: Jeff Law [mailto:l...@redhat.com]
> > Sent: Tuesday, November 06, 2012 4:51 AM
> > To: Bin Cheng
> > Cc: gcc-patches@gcc.gnu.org
> > Subject: Re: [PATCH Version 2][RFA]
> -Original Message-
> From: Jeff Law [mailto:l...@redhat.com]
> Sent: Tuesday, November 06, 2012 4:51 AM
> To: Bin Cheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH Version 2][RFA]Improving register pressure directed
hoist
>
> On 11/02/2012 0
On 11/02/2012 02:34 AM, Bin Cheng wrote:
Also I don't understand why the bogus patch can catch more hoist
opportunities and improve code size, so please help if you have any idea
about this.
Well, perturbing the code, particularly in a way which is supposed to
change the amount of register pre
Hi,
I posted a patch improving register pressure directed hoist at
http://gcc.gnu.org/ml/gcc-patches/2012-10/msg02552.html
Turns out it has a mistake in update_bb_reg_pressure resulting in changing
register pressure incorrectly. Here comes the 2nd version patch for review.
Unfortunately and strange
