loop-38.c: Correct testcase.

	* gcc.dg/tree-ssa/loop-38.c: Correct testcase.

	* tree-ssa-loop-niter.c (discover_iteration_bound_by_body_walk): Add
	missing sign to unsigned.

From-SVN: r193117

gcc/ChangeLog

+2012-11-02  Jan Hubicka  <jh@suse.cz>
+
+	* tree-ssa-loop-niter.c (discover_iteration_bound_by_body_walk): Add
+	missing sign to unsigned.
+
 2012-11-02  Andrew Pinski  <apinski@cavium.com>
 
 	PR rtl-opt/54524

gcc/testsuite/ChangeLog

+2012-11-02  Jan Hubicka  <jh@suse.cz>
+
+	* gcc.dg/tree-ssa/loop-38.c: Correct testcase.
+
 2012-11-02  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	* gcc.target/powerpc/pr48258-2.c: Simplfy the acceptance

gcc/testsuite/gcc.dg/tree-ssa/loop-38.c

@@ -13,6 +13,6 @@ t(int n)
 	sum+=b[i];
   return sum;
 }
-/* { dg-final { scan-tree-dump "Found better loop bound 10" "cunrolli" } } */
-/* { dg-final { scan-tree-dump "Loop 1 iterates at most 10 times" "cunrolli" } } */
+/* { dg-final { scan-tree-dump "Found better loop bound 11" "cunrolli" } } */
+/* { dg-final { scan-tree-dump "Loop 1 iterates at most 11 times" "cunrolli" } } */
 /* { dg-final { cleanup-tree-dump "cunrolli" } } */

gcc/tree-ssa-loop-niter.c

@@ -3161,7 +3161,7 @@ discover_iteration_bound_by_body_walk (struct loop *loop)
     }
 
   gcc_assert (latch_index >= 0);
-  if (latch_index < VEC_length (double_int, bounds))
+  if ((unsigned)latch_index < VEC_length (double_int, bounds))
     {
       if (dump_file && (dump_flags & TDF_DETAILS))
 	{