swr: [rasterizer common] workaround clang for windows __cpuid() bug
swr: [rasterizer common] workaround clang for windows __cpuid() bug

Reviewed-by: Bruce Cherniak <a5345730962d952f474b19e983398300e1cb5f29@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler