[obvious] Fix typo in tree-ssa-math-opts.c

	* tree-ssa-math-opts.c: Fix typo in comment.

From-SVN: r234058

gcc/ChangeLog

+2016-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* tree-ssa-math-opts.c: Fix typo in comment.
+
 2016-03-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/70110

gcc/tree-ssa-math-opts.c

@@ -42,7 +42,7 @@ along with GCC; see the file COPYING3.  If not see
 
    First of all, with some experiments it was found out that the
    transformation is not always useful if there are only two divisions
-   hy the same divisor.  This is probably because modern processors
+   by the same divisor.  This is probably because modern processors
    can pipeline the divisions; on older, in-order processors it should
    still be effective to optimize two divisions by the same number.
    We make this a param, and it shall be called N in the remainder of