Change the default of TARGET_LRA_P to true

Since all targets now define TARGET_LRA_P, this does not change behaviour
for any existing target.  Newly added ports will by default use LRA now.


2016-09-14  Segher Boessenkool  <segher@kernel.crashing.org>

	* targhooks.c (default_lra_p): Return true instead of false.

From-SVN: r240131

gcc/ChangeLog

 2016-09-14  Segher Boessenkool  <segher@kernel.crashing.org>
 
+	* targhooks.c (default_lra_p): Return true instead of false.
+
+2016-09-14  Segher Boessenkool  <segher@kernel.crashing.org>
+
 	* config/alpha/alpha.c (TARGET_LRA_P): New macro, defined to
 	hook_bool_void_false.
 	* config/avr/avr.c: Ditto.

gcc/targhooks.c

@@ -995,7 +995,7 @@ default_ira_change_pseudo_allocno_class (int regno ATTRIBUTE_UNUSED,
 extern bool
 default_lra_p (void)
 {
-  return false;
+  return true;
 }
 
 int