re PR middle-end/23831 (ICE in immed_double_const with vectorized multipication)

	PR middle-end/23831
	* gcc.dg/vect/pr23831.c: New test.

From-SVN: r104651

gcc/testsuite/ChangeLog

 2005-09-26  Uros Bizjak  <uros@kss-loka.si>
 
+	PR middle-end/23831
+	* gcc.dg/vect/pr23831.c: New test.
+
 	PR target/24055
 	* gcc.target/i386/pr24055.c: New test.
 

gcc/testsuite/gcc.dg/vect/pr23831.c

+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+void foo (void)
+{
+  static unsigned int bm[16];
+  int j;
+  for (j = 0; j < 16; j++)
+    bm[j] = bm[j] * 8;
+}