Download patch
ref: fcc94fa905ba4d87f3383d517fbf6fcb08006ffc parent: 9d34160a4a8b675f29d6398416f67d721a7c54b5 author: Ronald S. Bultje <rsbultje@gmail.com> date: Wed Apr 1 06:48:53 EDT 2020
x86: use btc instead of xor+test in fgy_32x32xn_avx2