/in/foo.cc:2:0: warning: ignoring #pragma target  [-Wunknown-pragmas]
 #pragma target("popcnt")
 
/in/foo.cc: In function 'vld_rsu validate(unsigned int)':
/in/foo.cc:72:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 return S_eq == FULL ? OK : POSSI;
        ~~~~~^~~~~~~