f44a6299e2
Replace occurence of nested comments in blake2 reference implementation
with preprocessor directive for disabling unused code.
`blake2s-load-xop.h` is conditionally pulled in only on chips with XOP
support, among others the AMD Bulldozer. The malformed comments in the
source file breaks the build of `hashlib`'s `_blake2` on GCC 6.3.0.
Official reference code on github uses `GH-if` so this change should be
uncontroversial.
(cherry picked from commit
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.. | ||
blake2-config.h | ||
blake2-impl.h | ||
blake2.h | ||
blake2b-load-sse2.h | ||
blake2b-load-sse41.h | ||
blake2b-ref.c | ||
blake2b-round.h | ||
blake2b.c | ||
blake2s-load-sse2.h | ||
blake2s-load-sse41.h | ||
blake2s-load-xop.h | ||
blake2s-ref.c | ||
blake2s-round.h | ||
blake2s.c |