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Rev: nettle/ChangeLog:1.136

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 2011-02-07  Niels Möller  <nisse@lysator.liu.se>
 
-       Introduced 4-bit tables. If enabled, gives gmac performance of 19
+       * gcm.c (gcm_gf_mul_chunk): Special case first and last iteration.
+       (gcm_gf_add): New function, a special case of memxor. Use it for
+       all memxor calls with word-aligned 16 byte blocks. Improves
+       performance to 152 cycles/byte with no tables, 28 cycles per byte
+       with 4-bit tables and 10.5 cycles per byte with 8-bit tables.
+
+       Introduced 8-bit tables. If enabled, gives gmac performance of 19
        cycles per byte (still on intel x86_64).
        * gcm.c (gcm_gf_shift_chunk): New implementation for 8-bit tables.
        (gcm_gf_mul_chunk): Likewise.