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ec/curve25519.c: resolve regression with Android NDK's arm64 gcc.

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Unlike "upstream", Android NDK's arm64 gcc [but not clang] performs
64x64=128-bit multiplications with library calls, which appears to
have devastating impact on performance. [The condition is reduced to
__ANDROID__ [&& !__clang__], because x86_64 has corresponding
assembly module.]

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5589)
This commit is contained in:
Andy Polyakov 2018-03-12 10:46:23 +01:00
parent 7747a49f24
commit b3e02d06ba
1 changed files with 2 additions and 1 deletions
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3
crypto/ec/curve25519.c
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@ -13,7 +13,8 @@
#if defined(X25519_ASM) \
|| ( (defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16) \
&& !defined(__sparc__) )
&& !defined(__sparc__) \
&& !(defined(__ANDROID__) && !defined(__clang__)) )
/*
* Base 2^51 implementation.
*/