s390.c (s390_expand_insv): Only accept insertions within mode size.

2013-04-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* config/s390/s390.c (s390_expand_insv): Only accept insertions
	within mode size.

From-SVN: r197566

gcc/ChangeLog

+2013-04-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+
+	* config/s390/s390.c (s390_expand_insv): Only accept insertions
+	within mode size.
+
 2013-04-08  Marek Polacek  <polacek@redhat.com>
 
 	PR rtl-optimization/48182

gcc/config/s390/s390.c

@@ -4647,6 +4647,9 @@ s390_expand_insv (rtx dest, rtx op1, rtx op2, rtx src)
   int smode_bsize, mode_bsize;
   rtx op, clobber;
 
+  if (bitsize + bitpos > GET_MODE_SIZE (mode))
+    return false;
+
   /* Generate INSERT IMMEDIATE (IILL et al).  */
   /* (set (ze (reg)) (const_int)).  */
   if (TARGET_ZARCH