sha3.c: permute_n_avx512(): simplify num_rounds logic

bench results (samish across the board)
---------------------------------------
x86-64-avx512-gcc before:
  > make clean all BACKEND=2 && ./bench 10000
  ...
  info: cpucycles: version=20240318 implementation=amd64-pmc persecond=4800000000
  info: backend=avx512 num_trials=10000 src_lens=64,256,1024,4096,16384 dst_lens=32
  function,dst_len,64,256,1024,4096,16384
  sha3_224,28,15.4,7.8,7.8,7.1,7.0
  sha3_256,32,15.4,7.8,7.8,7.6,7.4
  sha3_384,48,15.4,11.6,9.8,9.8,9.7
  sha3_512,64,15.5,15.5,14.5,13.8,13.8
  shake128,32,15.6,7.8,6.9,6.2,6.1
  shake256,32,15.6,7.8,7.9,7.6,7.4

x86-64-avx512-clang before:
  > make clean all CC=clang BACKEND=2 && ./bench 10000
  ...
  info: cpucycles: version=20240318 implementation=amd64-pmc persecond=4800000000
  info: backend=avx512 num_trials=10000 src_lens=64,256,1024,4096,16384 dst_lens=32
  function,dst_len,64,256,1024,4096,16384
  sha3_224,28,21.6,10.8,10.7,9.6,9.5
  sha3_256,32,21.6,10.8,10.7,10.3,10.1
  sha3_384,48,21.5,16.0,13.3,13.2,13.1
  sha3_512,64,21.5,21.2,19.8,18.8,18.7
  shake128,32,21.8,10.8,9.4,8.4,8.2
  shake256,32,21.6,10.8,10.7,10.3,10.1

x86-64-avx512-gcc after:
  > make clean all BACKEND=2 && ./bench 10000
  ...
  info: cpucycles: version=20240318 implementation=amd64-pmc persecond=4800000000
  info: backend=avx512 num_trials=10000 src_lens=64,256,1024,4096,16384 dst_lens=32
  function,dst_len,64,256,1024,4096,16384
  sha3_224,28,15.4,7.8,7.8,7.1,7.0
  sha3_256,32,15.4,7.8,7.8,7.6,7.4
  sha3_384,48,15.4,11.6,9.8,9.8,9.7
  sha3_512,64,15.5,15.5,14.6,13.8,13.8
  shake128,32,15.5,7.8,6.9,6.2,6.1
  shake256,32,15.5,7.8,7.9,7.6,7.4

x86-64-avx512-clang after:
  > make clean all CC=clang BACKEND=2 && ./bench 10000
  ...
  info: cpucycles: version=20240318 implementation=amd64-pmc persecond=4800000000
  info: backend=avx512 num_trials=10000 src_lens=64,256,1024,4096,16384 dst_lens=32
  function,dst_len,64,256,1024,4096,16384
  sha3_224,28,21.5,10.8,10.7,9.6,9.5
  sha3_256,32,21.5,10.8,10.7,10.3,10.0
  sha3_384,48,21.6,16.0,13.3,13.2,13.1
  sha3_512,64,21.5,21.2,19.8,18.8,18.7
  shake128,32,21.7,10.8,9.3,8.3,8.2
  shake256,32,21.7,10.8,10.7,10.3,10.1

0 files changed, 0 insertions, 0 deletions