PR 11864

	From Kazumoto Kojima / Dan Kegel:
	* gcc.dg/pr11864-1.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@75987 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 573156e..d23fe5d 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -5,6 +5,10 @@
 
 2004-01-16  J"orn Rennecke <joern.rennecke@superh.com>
 
+       PR 11864
+       From Kazumoto Kojima / Dan Kegel:
+       * gcc.dg/pr11864-1.c: New test.
+
        PR 10392
        From Marcus Comstedt / Dan Kegel:
        * gcc.dg/pr10392-1.c: New test.

diff --git a/gcc/testsuite/gcc.dg/pr11864-1.c b/gcc/testsuite/gcc.dg/pr11864-1.c
new file mode 100644 (file)
index 0000000..b8d7134
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr11864-1.c
@@ -0,0 +1,42 @@
+/* PR optimization/11864
+ * Reporter: Kazumoto Kojima <kkojima@gcc.gnu.org>
+ * Summary: [3.3/3.4 regression] miscompiles zero extension and test
+ * Description:
+ * gcc-3.3/3.4 -O2 for sh target may miscompile the combination of zero extension
+ * and test if it's zero.
+ *
+ * Testcase tweaked by dank@kegel.com.  Not marked as xfail because it's a regression.
+ */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+extern void abort(void);
+
+int val = 0xff00;
+
+int f(void)
+{
+       return val;
+}
+
+unsigned char a[1];
+
+void foo(void)
+{
+       a[0] = f() & 255;
+
+       if (!a[0])
+               a[0] = f() & 255;
+
+       if (!a[0])
+               a[0] = 1 + (f() & 127);
+}
+
+int main(int argc, char **argv)
+{
+       foo();
+       if (!a[0])
+               abort();
+
+       return 0;
+}