Ping.
https://gcc.gnu.org/ml/gcc-patches/2015-06/msg01064.html
Thanks,
Kyrill
On 16/06/15 09:36, Kyrill Tkachov wrote:
On 27/05/15 09:39, Andrew Pinski wrote:
On Wed, May 27, 2015 at 4:38 PM, Kyrill Tkachov <kyrylo.tkac...@arm.com> wrote:
Ping.
https://gcc.gnu.org/ml/gcc-patches/2015-05/msg00054.html
This and the one in AARCH64 is too noisy. Can we have an option to
turn this on and default to turning them off.
How about this? The new undocumented option can be used to turn on verbose
costs dumping.
It is off by default.
Tested arm-none-eabi.
Ok for trunk?
Thanks,
Kyrill
2015-06-16 Kyrylo Tkachov <kyrylo.tkac...@arm.com>
* config/arm/arm.c (DBG_COST): New macro.
(arm_new_rtx_costs): Use above.
* config/arm/arm.opt (mdebug-rtx-costs): New option.
Thanks,
Andrew
Thanks,
Kyrill
On 01/05/15 15:31, Kyrill Tkachov wrote:
Hi all,
This patch adds a macro to wrap cost field accesses into a helpful debug
dump,
saying which field is being accessed at what line and with what values.
This helped me track down cases where the costs were doing the wrong thing
by allowing me to see which path in arm_new_rtx_costs was taken.
For example, the combine log might now contain:
Trying 2 -> 6:
Successfully matched this instruction:
(set (reg:SI 115 [ D.5348 ])
(neg:SI (reg:SI 0 r0 [ a ])))
using extra_cost->alu.arith with cost 0 from line 10506
which can be useful in debugging the rtx costs.
Bootstrapped and tested on arm.
Ok for trunk?
Thanks,
Kyrill
2015-05-01 Kyrylo Tkachov <kyrylo.tkac...@arm.com>
* config/arm/arm.c (DBG_COST): New macro.
(arm_new_rtx_costs): Use above.
