Revert: One more patch for PR93564: Prefer smaller hard regno when we do not honor reg alloc order.

2020-03-09  Vladimir Makarov  <vmakarov@redhat.com>

	Revert:

	2020-02-28  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/93564
	* ira-color.c (assign_hard_reg): Prefer smaller hard regno when we
	do not honor reg alloc order.

gcc/ChangeLog

+2020-03-09  Vladimir Makarov  <vmakarov@redhat.com>
+
+	Revert:
+
+	2020-02-28  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR rtl-optimization/93564
+	* ira-color.c (assign_hard_reg): Prefer smaller hard regno when we
+	do not honor reg alloc order.
+
 2020-03-09  Andrew Pinski  <apinski@marvell.com>
 
 	PR inline-asm/94095

gcc/ira-color.c

@@ -1925,9 +1925,7 @@ assign_hard_reg (ira_allocno_t a, bool retry_p)
 	}
       if (min_cost > cost)
 	min_cost = cost;
-      if (min_full_cost > full_cost
-	  || (!HONOR_REG_ALLOC_ORDER && min_full_cost == full_cost
-	      && best_hard_regno > hard_regno))
+      if (min_full_cost > full_cost)
 	{
 	  min_full_cost = full_cost;
 	  best_hard_regno = hard_regno;