re PR rtl-optimization/42461 (missed optimization for pure functions)

	PR rtl-optimization/42461
	* gcc.dg/pr42461.c: Compile at -O2 instead of -O.

From-SVN: r160632

gcc/testsuite/ChangeLog

+2010-06-07  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gcc.dg/pr42461.c: Compile at -O2 instead of -O.
+
 2010-06-11  Sebastian Pop  <sebastian.pop@amd.com>
 
 	PR middle-end/44483

gcc/testsuite/gcc.dg/pr42461.c

@@ -2,7 +2,7 @@
 /* Reported by Patrick Pelissier <patrick.pelissier@gmail.com> */
 
 /* { dg-do link } */
-/* { dg-options "-O" } */
+/* { dg-options "-O2" } */
 
 extern int link_failure (int) __attribute__ ((pure));