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Re: [PATCH][ARM] Update Cortex A9 DImode mult extend rtx costs
- 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>, Ramana Radhakrishnan <Ramana dot Radhakrishnan at arm dot com>
- Date: Mon, 21 Oct 2013 14:40:39 +0100
- Subject: Re: [PATCH][ARM] Update Cortex A9 DImode mult extend rtx costs
- Authentication-results: sourceware.org; auth=none
- References: <52652E34 dot 1020202 at arm dot com>
On 21/10/13 14:37, Kyrill Tkachov wrote:
> Hi all,
>
> There's a slight error in the Cortex A9 costs I committed recently. The extend
> and extend_add costs refer to 32x32->64 bit operations and thus have valid costs
> in aarch32. This patches updates those costs for the Cortex A9. The other
> existing cost tables are correct in this regard and don't need updating. This is
> just a thinko in the A9 costs.
>
> Tested arm-none-eabi on qemu.
>
> Ok for trunk?
>
> Thanks,
> Kyrill
>
> [gcc/]
> 2013-10-21 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
>
> * config/arm/arm.c (cortexa9_extra_costs): Update mult costs for
> extend and extend_add.
>
>
OK.
R.