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Re: [PATCH][ARM] Improve Cortex A15 rtx costs, fix PR 59289
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: Kyrill Tkachov <kyrylo dot tkachov at arm dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 29 Nov 2013 15:15:16 +0000
- Subject: Re: [PATCH][ARM] Improve Cortex A15 rtx costs, fix PR 59289
- Authentication-results: sourceware.org; auth=none
- References: <52986986 dot 2030904 at arm dot com>
On 29/11/13 10:16, Kyrill Tkachov wrote:
> Hi all,
>
> When the Cortex A15 rtx costs table was first written, it didn't take into
> account that it was supposed to show the costs _above_ COSTS_N_INSNS (1). This
> patch adjusts that. Also, I've updated the accumulate costs and the
> floating-point convert costs. Before that they showed the cost of moving to/from
> VFP and core registers instead of the cost of the vcvt (floating point
> round/convert) instructions as they should.
>
> Tested arm-none-eabi on qemu and benchmarked to make sure there are no regressions.
>
> Ok for trunk?
>
> Thanks,
> Kyrill
>
> 2013-11-29 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
>
> PR target/59289
> * config/arm/arm.c (cortexa15_extra_costs): Adjust costs.
>
>
OK.
R.