re PR tree-optimization/77444 (Bogus assignments in cand_value_at)

	PR tree-optimization/77444
	* tree-ssa-loop-ivopts.c (cand_value_at): For pointers use sizetype
	as steptype, remove redundant initialization.

Co-Authored-By: Richard Biener <rguenther@suse.de>

From-SVN: r239962

gcc/ChangeLog

 2016-09-02  Jakub Jelinek  <jakub@redhat.com>
+	    Richard Biener  <rguenth@suse.de>
+
+	PR tree-optimization/77444
+	* tree-ssa-loop-ivopts.c (cand_value_at): For pointers use sizetype
+	as steptype, remove redundant initialization.
+
+2016-09-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/77396
 	* sanopt.c: Include gimple-ssa.h, tree-phinodes.h and ssa-iterators.h.

gcc/tree-ssa-loop-ivopts.c

@@ -5168,10 +5168,11 @@ cand_value_at (struct loop *loop, struct iv_cand *cand, gimple *at, tree niter,
   aff_tree step, delta, nit;
   struct iv *iv = cand->iv;
   tree type = TREE_TYPE (iv->base);
-  tree steptype = type;
+  tree steptype;
   if (POINTER_TYPE_P (type))
     steptype = sizetype;
-  steptype = unsigned_type_for (type);
+  else
+    steptype = unsigned_type_for (type);
 
   tree_to_aff_combination (iv->step, TREE_TYPE (iv->step), &step);
   aff_combination_convert (&step, steptype);