[aarch64] Add xgene1 prefetch tunings.

2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
            Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

	* config/aarch64/aarch64.c (xgene1_tunings): Add Xgene1 specific
	prefetch tunings.

Co-Authored-By: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

From-SVN: r266413

gcc/ChangeLog

 2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
 	    Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
 
+	* config/aarch64/aarch64.c (xgene1_tunings): Add Xgene1 specific
+	prefetch tunings.
 	* config/aarch64/aarch64.c (xgene1_addrcost_table): Correct the post-modify
 	costs.
 	* config/arm/aarch-cost-tables.h (xgene1_extra_costs): Update the cost table

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 =