diff --git a/cse.c b/cse.c
index aaf3e4c..c23c4bf 100644
--- a/cse.c
+++ b/cse.c
@@ -5660,7 +5660,7 @@ fold_rtx (x, insn)
 	     hence not save anything) or be incorrect.  */
 	  if (const_arg1 != 0 && GET_CODE (const_arg1) == CONST_INT
 	      && INTVAL (const_arg1) < 0
-	      && - INTVAL (const_arg1) >= 0
+	      && (-INTVAL (const_arg1) >> 0x1f) >= 0
 	      && GET_CODE (folded_arg1) == REG)
 	    {
 	      rtx new_const = GEN_INT (- INTVAL (const_arg1));