[testsuite] Make scan pattern more precise in vrp104.c

2018-03-25  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/vrp104.c: Make scan-tree-dump-times pattern more
	precise.

From-SVN: r258842

gcc/testsuite/ChangeLog

+2018-03-25  Tom de Vries  <tom@codesourcery.com>
+
+	* gcc.dg/tree-ssa/vrp104.c: Make scan-tree-dump-times pattern more
+	precise.
+
 2018-03-24  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/69497

gcc/testsuite/gcc.dg/tree-ssa/vrp104.c

@@ -2,7 +2,7 @@
 /* { dg-options "-O2 -fdump-tree-switchlower" }  */
 /* We scan for 2 switches as the dump file reports a transformation,
    IL really contains just a single.  */
-/* { dg-final { scan-tree-dump-times "switch" 2 "switchlower" } }  */
+/* { dg-final { scan-tree-dump-times "switch \\(i_" 2 "switchlower" } }  */
 
 void foo (void);
 void bar (void);