re PR tree-optimization/54295 (Widening multiply-accumulate operation uses wrong value extension)

	PR tree-ssa/54295
	* tree-ssa-math-opts.c (is_widening_mult_rhs_p): Delete rhs_code
	declaration and setter.

From-SVN: r190534

gcc/ChangeLog

 2012-08-20  Richard Earnshaw  <rearnsha@arm.com>
 
 	PR tree-ssa/54295
+	* tree-ssa-math-opts.c (is_widening_mult_rhs_p): Delete rhs_code
+	declaration and setter.
+
+2012-08-20  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR tree-ssa/54295
 	* tree-ssa-math-opts.c (widening_mult_conversion_strippable_p):
 	New function.
 	(is_widening_mult_rhs_p): Use it.

gcc/tree-ssa-math-opts.c

@@ -2011,14 +2011,12 @@ is_widening_mult_rhs_p (tree type, tree rhs, tree *type_out,
 {
   gimple stmt;
   tree type1, rhs1;
-  enum tree_code rhs_code;
 
   if (TREE_CODE (rhs) == SSA_NAME)
     {
       stmt = SSA_NAME_DEF_STMT (rhs);
       if (is_gimple_assign (stmt))
 	{
-	  rhs_code = gimple_assign_rhs_code (stmt);
 	  if (! widening_mult_conversion_strippable_p (type, stmt))
 	    rhs1 = rhs;
 	  else