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175 static __m128i gcm_reduce(__m128i xx) in gcm_reduce() argument179 __m128i aa = _mm_slli_epi64(xx, 63); // x1<<63:x0<<63 = stuff:a in gcm_reduce()180 __m128i bb = _mm_slli_epi64(xx, 62); // x1<<62:x0<<62 = stuff:b in gcm_reduce()181 __m128i cc = _mm_slli_epi64(xx, 57); // x1<<57:x0<<57 = stuff:c in gcm_reduce()183 return _mm_xor_si128(dd, xx); // x1+a+b+c:x0 = d:x0 in gcm_reduce()