[PATCH] Fix PR69291, RTL if-conversion bug

[Bernd Schmidt]

On 02/10/2016 02:35 PM, Richard Biener wrote:

> Index: gcc/ifcvt.c
> ===================================================================
> --- gcc/ifcvt.c (revision 233262)
> +++ gcc/ifcvt.c (working copy)
> @@ -1274,7 +1274,8 @@ noce_try_store_flag_constants (struct no
>         && CONST_INT_P (XEXP (a, 1))
>         && CONST_INT_P (XEXP (b, 1))
>         && rtx_equal_p (XEXP (a, 0), XEXP (b, 0))
> -      && noce_operand_ok (XEXP (a, 0))
> +      && (REG_P (XEXP (a, 0))
> +         || ! reg_mentioned_p (if_info->x, XEXP (a, 0)))

I guess that would also work. Could maybe use a brief comment.


Bernd