Update prefetch tuning parameters for qdf24xx.

	* config/aarch64/aarch64.c (qdf24xx_prefetch_tune): Update
	prefetch settings, and enable prefetching by default at -O3.

Change-Id: I2f0da54a8c262f6fbd0dcfde4584141bb09f1013

From-SVN: r249242

gcc/ChangeLog

 2017-06-16  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>
 
+        * config/aarch64/aarch64.c (qdf24xx_prefetch_tune): Update
+        prefetch settings, and enable prefetching by default at -O3.
+
+2017-06-16  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>
+
         * config/aarch64/aarch64.c (aarch64_override_options_internal):
         Set flag_prefetch_loop_arrays according to tuning data.
 

gcc/config/aarch64/aarch64.c

@@ -547,11 +547,11 @@ static const cpu_prefetch_tune exynosm1_prefetch_tune =
 
 static const cpu_prefetch_tune qdf24xx_prefetch_tune =
 {
-  0,			/* num_slots  */
-  -1,			/* l1_cache_size  */
+  4,			/* num_slots  */
+  32,			/* l1_cache_size  */
   64,			/* l1_cache_line_size  */
-  -1,			/* l2_cache_size  */
-  -1			/* default_opt_level  */
+  1024,			/* l2_cache_size  */
+  3			/* default_opt_level  */
 };
 
 static const cpu_prefetch_tune thunderx2t99_prefetch_tune =