- Add missing mask_operand patch.

From-SVN: r49984

gcc/ChangeLog

@@ -9,6 +9,7 @@
 	Simplify comparison of `low'.
 	(add_operand): Fix formatting.
 	(non_add_cint_operand): Use CONST_OK_FOR_LETTER_P.
+	(mask_operand): Disallow mask to wrap in 64-bit mode.
 	(rs6000_stack_info): Remove redundant test setting push_p.
 	(output_toc): Fix formatting.
 	* config/rs6000/rs6000.md (boolsi3, boolcsi3 splitters): Use

gcc/config/rs6000/rs6000.c

@@ -1399,6 +1399,11 @@ mask_operand (op, mode)
 
   c = INTVAL (op);
 
+  /* Fail in 64-bit mode if the mask wraps around because the upper
+     32-bits of the mask will all be 1s, contrary to GCC's internal view.  */
+  if (TARGET_POWERPC64 && (c & 0x80000001) == 0x80000001)
+    return 0;
+
   /* We don't change the number of transitions by inverting,
      so make sure we start with the LS bit zero.  */
   if (c & 1)