20080522-1.c: New testcase.

2008-05-22  Richard Guenther  <rguenther@suse.de>

	* gcc.c-torture/execute/20080522-1.c: New testcase.

From-SVN: r135768

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 51daefa9b4da7b02aee546ba18c81a28c22cc440..e954cd5fa5919770fbbe1b95b2cb828180d7f183 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2008-05-22  Richard Guenther  <rguenther@suse.de>
+
+       * gcc.c-torture/execute/20080522-1.c: New testcase.
+
 2008-05-22  Richard Guenther  <rguenther@suse.de>
 
        * gcc.dg/tree-ssa/alias-18.c: New testcase.

diff --git a/gcc/testsuite/gcc.c-torture/execute/20080522-1.c b/gcc/testsuite/gcc.c-torture/execute/20080522-1.c
new file mode 100644 (file)
index 0000000..75bc533
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20080522-1.c
@@ -0,0 +1,43 @@
+/* This testcase is to make sure we have i in referenced vars and that we
+   properly compute aliasing for the loads and stores.  */
+
+extern void abort (void);
+
+static int i;
+static int *p = &i;
+
+int __attribute__((noinline))
+foo(int *q)
+{
+  *p = 1;
+  *q = 2;
+  return *p;
+}
+
+int __attribute__((noinline))
+bar(int *q)
+{
+  *q = 2;
+  *p = 1;
+  return *q;
+}
+
+int main()
+{
+  int j = 0;
+
+  if (foo(&i) != 2)
+    abort ();
+  if (bar(&i) != 1)
+    abort ();
+  if (foo(&j) != 1)
+    abort ();
+  if (j != 2)
+    abort ();
+  if (bar(&j) != 2)
+    abort ();
+  if (j != 2)
+    abort ();
+
+  return 0;
+}