lra-assigns.c (find_hard_regno_for): Add 1 to the cost of call saved registers.

2013-05-10 Vladimir Makarov <vmakarov@redhat.com> * lra-assigns.c (find_hard_regno_for): Add 1 to the cost of call saved registers. From-SVN: r198792

lra-assigns.c (find_hard_regno_for): Add 1 to the cost of call saved registers.
2013-05-10 Vladimir Makarov <vmakarov@redhat.com> * lra-assigns.c (find_hard_regno_for): Add 1 to the cost of call saved registers. From-SVN: r198792
1f873f0e · Vladimir Makarov · Vladimir Makarov · 94938aec · 1f873f0e · 1f873f0e
Commit 1f873f0e authored May 10, 2013 by Vladimir Makarov Committed by Vladimir Makarov May 10, 2013
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gcc/lra-assigns.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2013-05-10  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* lra-assigns.c (find_hard_regno_for): Add 1 to the cost of call
+	saved registers.
+
 2013-05-10  Sebastian Huber  <sebastian.huber@embedded-brains.de>

 	* config/arm/t-rtems-eabi: Remove mthumb/march=armv7 multilib.

--- a/gcc/lra-assigns.c
+++ b/gcc/lra-assigns.c
@@ -598,7 +598,7 @@ find_hard_regno_for (int regno, int *cost, int try_only_hard_regno)
 		&& ! df_regs_ever_live_p (hard_regno + j))
 	      /* It needs save restore.	 */
 	      hard_regno_costs[hard_regno]
-		+= 2 * ENTRY_BLOCK_PTR->next_bb->frequency;
+		+= 2 * ENTRY_BLOCK_PTR->next_bb->frequency + 1;
 	  priority = targetm.register_priority (hard_regno);
 	  if (best_hard_regno < 0 || hard_regno_costs[hard_regno] < best_cost
 	      || (hard_regno_costs[hard_regno] == best_cost