Patch to create builtin bzero

[Richard Henderson]

On Wed, Mar 22, 2000 at 11:36:10AM -0500, Kaveh R. Ghazi wrote:
> +      /* Insert a zero parameter to convert bzero(x,y) -> memset(x,0,y).  */
> +      TREE_CHAIN (val) = TREE_CHAIN (arglist);
> +      TREE_CHAIN (arglist) = val;
> +      result = expand_builtin_memset(exp);
> +      
> +      /* If the above call fails, delete the zero parameter.  */
> +      if (result == 0)
> +	TREE_CHAIN (arglist) = TREE_CHAIN (TREE_CHAIN (arglist));
> +      return result;

I'm pretty sure the C++ front end would be mighty unhappy
with you modifying their trees.  Just build a new chain with
the same TREE_VALUE contents.  Then you don't have to worry
about undoing it either.


r~