[3/3] Record the number of generator arguments in insn_data

[Richard Henderson]

On 03/31/2011 09:23 AM, Richard Sandiford wrote:
> +++ gcc/expr.c	2011-03-31 16:49:06.000000000 +0100
> @@ -1293,11 +1293,7 @@ emit_block_move_via_movmem (rtx x, rtx y
>  	     nice if there were some way to inform the backend, so
>  	     that it doesn't fail the expansion because it thinks
>  	     emitting the libcall would be more efficient.  */
> -	  nops = insn_data[(int) code].n_operands;
> -	  /* ??? n_operands includes match_scratches; find some other
> -	     way to select the 6 operand variant, or force all targets
> -	     to have exactly 6 operands.  */
> -	  gcc_assert (nops >= 4 && nops <= 6);
> +	  nops = insn_data[(int) code].n_generator_args;

I think the assert should be retained (for now) as

  gcc_assert (nops == 4 || nops == 6);

at least until we add such verification to some genfoo.

Also, you've forgotten the setmem hunk.


r~