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Re: [PATCH 3/4] [aarch64] Add xgene1 prefetch tunings.
- From: "Richard Earnshaw (lists)" <Richard dot Earnshaw at arm dot com>
- To: Christoph Muellner <christoph dot muellner at theobroma-systems dot com>, Kyrill Tkachov <kyrylo dot tkachov at foss dot arm dot com>, Philipp Tomsich <philipp dot tomsich at theobroma-systems dot com>, James Greenhalgh <James dot Greenhalgh at arm dot com>, Marcus Shawcroft <Marcus dot Shawcroft at arm dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 13 Nov 2018 11:20:32 +0000
- Subject: Re: [PATCH 3/4] [aarch64] Add xgene1 prefetch tunings.
- References: <20181112191458.32635-1-christoph.muellner@theobroma-systems.com> <20181112191458.32635-3-christoph.muellner@theobroma-systems.com>
On 12/11/2018 19:14, Christoph Muellner wrote:
> *** gcc/ChangeLog ***
>
> 2018-xx-xx Christoph Muellner <christoph.muellner@theobroma-systems.com>
>
> * config/aarch64/aarch64.c (xgene1_tunings): Add Xgene1 specific
> prefetch tunings.
OK.
R.
> ---
> gcc/config/aarch64/aarch64.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
> index a6bc1fb..903f4e2 100644
> --- a/gcc/config/aarch64/aarch64.c
> +++ b/gcc/config/aarch64/aarch64.c
> @@ -662,6 +662,17 @@ static const cpu_prefetch_tune tsv110_prefetch_tune =
> -1 /* default_opt_level */
> };
>
> +static const cpu_prefetch_tune xgene1_prefetch_tune =
> +{
> + 8, /* num_slots */
> + 32, /* l1_cache_size */
> + 64, /* l1_cache_line_size */
> + 256, /* l2_cache_size */
> + true, /* prefetch_dynamic_strides */
> + -1, /* minimum_stride */
> + -1 /* default_opt_level */
> +};
> +
> static const struct tune_params generic_tunings =
> {
> &cortexa57_extra_costs,
> @@ -943,7 +954,7 @@ static const struct tune_params xgene1_tunings =
> 0, /* max_case_values. */
> tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */
> (AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS), /* tune_flags. */
> - &generic_prefetch_tune
> + &xgene1_prefetch_tune
> };
>
> static const struct tune_params qdf24xx_tunings =
>