re PR debug/53671 (Many guality test failures)

PR debug/53671
PR debug/49888
* gcc.dg/guality/pr49888.c: Account for the possibility that
the variable is optimized out at the first test.

From-SVN: r189038

gcc/testsuite/ChangeLog

+2012-06-28  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR debug/53671
+	PR debug/49888
+	* gcc.dg/guality/pr49888.c: Account for the possibility that
+	the variable is optimized out at the first test.
+
 2012-06-27  Jason Merrill  <jason@redhat.com>
 
 	* g++.dg/cpp0x/override2.C: Adjust.

gcc/testsuite/gcc.dg/guality/pr49888.c

@@ -9,12 +9,13 @@ f (int *p)
 {
   int c = *p;
   v = c;
-  *p = 1; /* { dg-final { gdb-test 12 "c" "0" } } */
+  *p = 1; /* { dg-final { gdb-test 12 "!!c" "0" } } */
   /* c may very well be optimized out at this point, so we test !c,
      which will evaluate to the expected value.  We just want to make
      sure it doesn't remain bound to *p as it did before, in which
-     case !c would evaluate to 0.  */
-  v = 0; /* { dg-final { gdb-test 17 "!c" "1" } } */
+     case !c would evaluate to 0.  *p may also be regarded as aliasing
+     register saves, thus the !!c above.  */
+  v = 0; /* { dg-final { gdb-test 18 "!c" "1" } } */
 }
 int
 main ()