Add specialized reduction for P256 in pcurves #4146
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For 32-bit x86, this reduction results in point arithmetic operations that are 25-35% faster than when using Montgomery. Sadly for 64-bit x86 it is at best about even with using Montgomery, and for Clang 64-bit it's even somewhat slower.
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Replaced by #4147 |
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For 32-bit x86, this reduction results in point arithmetic operations that are 25-35% faster than when using Montgomery.
Sadly for 64-bit x86 it is at best about even with using Montgomery, and for Clang 64-bit it's even somewhat slower.