2.0x AVX2 i64 sort speedup: use single Compress. 1.9x for int128, 2.4x for int32
2.0x AVX2 i64 sort speedup: use single Compress. 1.9x for int128, 2.4x for int32

PiperOrigin-RevId: 436783936

google/highway,google/highway,google/highway