[PATCH] Make pixman-mmx.c compile on x86-32 without optimization
Matt Turner
mattst88 at gmail.com
Mon Jul 9 19:19:18 PDT 2012
On Mon, Jul 9, 2012 at 7:31 AM, Søren Sandmann <sandmann at cs.au.dk> wrote:
> From: Søren Sandmann Pedersen <ssp at redhat.com>
>
> When not optimizing, write _mm_shuffle_pi16() as a statement
> expression with inline assembly. That way we avoid
> __builtin_ia32_pshufw(), which is only available when compiling with
> -msse, while still allowing the non-optimizing gcc to understand that
> the second argument is a compile time constant.
>
> Cc: mattst88 at gmail.com
> ---
> pixman/pixman-mmx.c | 13 +++++++++++--
> 1 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/pixman/pixman-mmx.c b/pixman/pixman-mmx.c
> index 5441d6b..74a5e87 100644
> --- a/pixman/pixman-mmx.c
> +++ b/pixman/pixman-mmx.c
> @@ -105,8 +105,17 @@ _mm_shuffle_pi16 (__m64 __A, int8_t const __N)
> return ret;
> }
> # else
> -# define _mm_shuffle_pi16(A, N) \
> - ((__m64) __builtin_ia32_pshufw ((__v4hi)(__m64)(A), (int)(N)))
> +# define _mm_shuffle_pi16(A, N) \
> + ({ \
> + __m64 ret; \
> + \
> + asm ("pshufw %2, %1, %0\n\t" \
> + : "=y" (ret) \
> + : "y" (A), "K" ((const int8_t)N) \
> + ); \
> + \
> + ret; \
> + })
> # endif
> # endif
> #endif
> --
> 1.7.4
Works for me.
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