m32c.c (m32c_expand_insv): Check that the value we're inserting is a singlt-bit constant.

* config/m32c/m32c.c (m32c_expand_insv): Check that the value
we're inserting is a singlt-bit constant.

Co-Authored-By: DJ Delorie <dj@redhat.com>

From-SVN: r114250

gcc/ChangeLog

+2006-05-30  Naveen.H.S  <naveenh@kpitcummins.com>
+	    DJ Delorie  <dj@redhat.com>
+
+	* config/m32c/m32c.c (m32c_expand_insv): Check that the value
+	we're inserting is a singlt-bit constant.
+
 2006-05-30  Roger Sayle  <roger@eyesopen.com>
 
 	* simplify-rtx.c (simplify_binary_operation_1) <LSHIFTRT>: Cast

gcc/config/m32c/m32c.c

@@ -3435,6 +3435,14 @@ m32c_expand_insv (rtx *operands)
   if (INTVAL (operands[1]) != 1)
     return 1;
 
+  /* Our insv opcode (bset, bclr) can only insert a one-bit constant.  */
+  if (GET_CODE (operands[3]) != CONST_INT)
+    return 1;
+  if (INTVAL (operands[3]) != 0
+      && INTVAL (operands[3]) != 1
+      && INTVAL (operands[3]) != -1)
+    return 1;
+
   mask = 1 << INTVAL (operands[2]);
 
   op0 = operands[0];