Marc Tiehuis
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2659ac01be
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Add Sha2 functions
We take the fastest time measurement taken across multiple runs. Tested
across multiple compiler flags and the best chosen.
```
Cpu: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
Gcc: 7.2.1 20171224
Clang: 5.0.1
Zig: 0.1.1.304f6f1d
```
See https://www.nayuki.io/page/fast-sha2-hashes-in-x86-assembly.
```
Gcc -O2
219 Mb/s
Clang -O2
213 Mb/s
Zig --release-fast
284 Mb/s
Zig --release-safe
211 Mb/s
Zig
6 Mb/s
```
```
Gcc -O2
350 Mb/s
Clang -O2
354 Mb/s
Zig --release-fast
426 Mb/s
Zig --release-safe
300 Mb/s
Zig
11 Mb/s
```
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2018-01-13 22:37:47 +13:00 |
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