This was added in ~2004 for the sis driver, to detect whether it could
use SSE for memcpy. Charmingly, the code to check whether that feature
exists in the server is:
#if XORG_VERSION_CURRENT >= XORG_VERSION_NUMERIC(6,8,99,13,0)
#define SISCHECKOSSSE /* Automatic check OS for SSE; requires SigIll facility */
#endif
Which means it has never worked in any modular server release.
A less gross way to do this is to check for SSE support with getauxval()
or /proc/cpuinfo or similar. Since no driver is using the existing
intercept mechanism, drop it.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
722c8035dc