arm-common.c (arm_option_optimization_table): Enable -fsched-pressure by default while optimizing.

2012-07-17  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>
	    Ulrich Weigand  <ulrich.weigand@linaro.org>

	* common/config/arm/arm-common.c (arm_option_optimization_table):
	Enable -fsched-pressure by default while optimizing.
	* config/arm/arm.c (arm_option_override): Use the alternate scheduler
	pressure algorithm by default.




Co-Authored-By: Ulrich Weigand <ulrich.weigand@linaro.org>

From-SVN: r189563

gcc/ChangeLog

+2012-07-17  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>
+	    Ulrich Weigand  <ulrich.weigand@linaro.org>
+
+	* common/config/arm/arm-common.c (arm_option_optimization_table):
+	Enable -fsched-pressure by default while optimizing.
+	* config/arm/arm.c (arm_option_override): Use the alternate scheduler
+	pressure algorithm by default.
+
 2012-07-16  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	* config/sh/sh.h (CONST_OK_FOR_I06): Delete.

gcc/common/config/arm/arm-common.c

@@ -35,6 +35,7 @@ static const struct default_options arm_option_optimization_table[] =
     /* Enable section anchors by default at -O1 or higher.  */
     { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 },
     { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
+    { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
     { OPT_LEVELS_NONE, 0, NULL, 0 }
   };
 

gcc/config/arm/arm.c

@@ -2009,6 +2009,11 @@ arm_option_override (void)
                            global_options.x_param_values,
                            global_options_set.x_param_values);
 
+  /* Use the alternative scheduling-pressure algorithm by default.  */
+  maybe_set_param_value (PARAM_SCHED_PRESSURE_ALGORITHM, 2,
+                         global_options.x_param_values,
+                         global_options_set.x_param_values);
+
   /* Register global variables with the garbage collector.  */
   arm_add_gc_roots ();
 }