cfgloopmanip.c (scale_loop_profile): Avoid use of REG_BR_PROB_BASE fixpoint arithmetics.

	* cfgloopmanip.c (scale_loop_profile): Avoid use of REG_BR_PROB_BASE
	fixpoint arithmetics.

From-SVN: r250242

gcc/ChangeLog

 2017-07-16  Jan Hubicka  <hubicka@ucw.cz>
 
+	* cfgloopmanip.c (scale_loop_profile): Avoid use of REG_BR_PROB_BASE
+	fixpoint arithmetics.
+
+2017-07-16  Jan Hubicka  <hubicka@ucw.cz>
+
 	* tree-ssa-loop-unswitch.c (hoist_guard): Avoid use of REG_BR_PROB_BASE
 	fixpoint arithmetics.
 

gcc/cfgloopmanip.c

@@ -546,8 +546,8 @@ scale_loop_profile (struct loop *loop, profile_probability p,
 
 	  /* Probability of exit must be 1/iterations.  */
 	  freq_delta = EDGE_FREQUENCY (e);
-	  e->probability = profile_probability::from_reg_br_prob_base
-				(REG_BR_PROB_BASE / iteration_bound);
+	  e->probability = profile_probability::always ()
+				.apply_scale (1, iteration_bound);
 	  other_e->probability = e->probability.invert ();
 	  freq_delta -= EDGE_FREQUENCY (e);