[Pixman] [PATCH 1/2] configure.ac: Use '-mloongson-mmi' for Loongson MMI.

[Matt Turner]

On Thu, Mar 26, 2020 at 5:57 AM Shiyou Yin <yinshiyou-hf at loongson.cn> wrote:
>
> It's recommended to use '-mloongson-mmi' for MMI.
> ---
>  configure.ac | 2 +-
>  meson.build  | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index 1ca3974..fd7df47 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -273,7 +273,7 @@ dnl ===========================================================================
>  dnl Check for Loongson Multimedia Instructions
>
>  if test "x$LS_CFLAGS" = "x" ; then
> -    LS_CFLAGS="-march=loongson2f"
> +    LS_CFLAGS="-mloongson-mmi"
>  fi
>
>  have_loongson_mmi=no
> diff --git a/meson.build b/meson.build
> index 15d3409..a45c969 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -51,7 +51,7 @@ endforeach
>
>  use_loongson_mmi = get_option('loongson-mmi')
>  have_loongson_mmi = false
> -loongson_mmi_flags = ['-march=loongson2f']
> +loongson_mmi_flags = ['-mloongson-mmi']
>  if not use_loongson_mmi.disabled()
>    if host_machine.cpu_family() == 'mips64' and cc.compiles('''
>        #ifndef __mips_loongson_vector_rev
> --

Thanks very much. This looks good to me. My only (minor) concern is
that the -mloongson-mmi flag is only available since GCC 9, but likely
any users would need to change -march=loongson2f to -march=loongson3a
anyway, and they can easily change -mloongson-mmi back to -march=...
if needed.

I'll just double check that with this patch that the test suite passes
on my Yeeloong and then commit it. (and sorry for my delayed response)