usmul.c: New test.

	* gcc.c-torture/execute/usmul.c: New test.

From-SVN: r107257

gcc/testsuite/ChangeLog

+2005-11-20  Bernd Schmidt  <bernd.schmidt@analog.com>
+
+	* gcc.c-torture/execute/usmul.c: New test.
+
 2005-11-19  James A. Morrison  <phython@gcc.gnu.org>
 
 	* gcc.dg/tree-ssa/vrp22.c: New test.

gcc/testsuite/gcc.c-torture/execute/usmul.c

+int __attribute__ ((noinline)) foo (short x, unsigned short y)
+{
+  return x * y;
+}
+
+int __attribute__ ((noinline)) bar (unsigned short x, short y)
+{
+  return x * y;
+}
+
+int main ()
+{
+  if (foo (-2, 0xffff) != -131070)
+    abort ();
+  if (foo (2, 0xffff) != 131070)
+    abort ();
+  if (foo (-32768, 0x8000) != -1073741824)
+    abort ();
+  if (foo (32767, 0x8000) != 1073709056)
+    abort ();
+
+  if (bar (0xffff, -2) != -131070)
+    abort ();
+  if (bar (0xffff, 2) != 131070)
+    abort ();
+  if (bar (0x8000, -32768) != -1073741824)
+    abort ();
+  if (bar (0x8000, 32767) != 1073709056)
+    abort ();
+
+  exit (0);
+}
+