re PR tree-optimization/26939 (loop number of iterations analysis not working)

	PR tree-optimization/26939
	* tree-chrec.c (chrec_merge): Use eq_evolutions_p.

From-SVN: r112623

gcc/ChangeLog

 2006-04-02  Sebastian Pop  <pop@cri.ensmp.fr>
 
+	PR tree-optimization/26939
+	* tree-chrec.c (chrec_merge): Use eq_evolutions_p.
+
+2006-04-02  Sebastian Pop  <pop@cri.ensmp.fr>
+
 	* tree-scalar-evolution.c (add_to_evolution_1): Pass an extra argument
 	at_stmt.  Convert the type of operands before calling 
 	build_polynomial_chrec.

gcc/tree-chrec.c

@@ -783,7 +783,7 @@ chrec_merge (tree chrec1,
   if (chrec2 == chrec_not_analyzed_yet)
     return chrec1;
 
-  if (operand_equal_p (chrec1, chrec2, 0))
+  if (eq_evolutions_p (chrec1, chrec2))
     return chrec1;
 
   return chrec_dont_know;