On Fri, Nov 16, 2018 at 4:57 AM Andi Kleen <a...@firstfloor.org> wrote:
>
> From: Andi Kleen <a...@linux.intel.com>
>
> The earlier PTWRITE builtin definition was unnecessarily restrictive,
> only allowing register input to PTWRITE. The instruction actually
> supports memory operands too, so allow that too.
>
> gcc/:
>
> 2018-11-15  Andi Kleen  <a...@linux.intel.com>
>
>         * config/i386/i386.md: Allow memory operands to ptwrite.

OK.

Thanks,
Uros.

> ---
>  gcc/config/i386/i386.md | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
> index 44db8ac954c..9c359c0ca04 100644
> --- a/gcc/config/i386/i386.md
> +++ b/gcc/config/i386/i386.md
> @@ -19501,7 +19501,7 @@
>     (set_attr "prefix_extra" "2")])
>
>  (define_insn "ptwrite<mode>"
> -  [(unspec_volatile [(match_operand:SWI48 0 "register_operand" "r")]
> +  [(unspec_volatile [(match_operand:SWI48 0 "nonimmediate_operand" "rm")]
>                     UNSPECV_PTWRITE)]
>    "TARGET_PTWRITE"
>    "ptwrite\t%0"
> --
> 2.19.1
>

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