crypto/sha256: add sha-ni implementation

crypto/sha256: add sha-ni implementation

goos: linux
goarch: amd64
pkg: crypto/sha256
cpu: 11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
                    │  bench.old   │              bench.new              │
                    │    sec/op    │   sec/op     vs base                │
Hash8Bytes/New-4      169.20n ± 7%   65.40n ± 5%  -61.35% (p=0.000 n=10)
Hash8Bytes/Sum224-4   166.10n ± 3%   65.20n ± 8%  -60.74% (p=0.000 n=10)
Hash8Bytes/Sum256-4   168.50n ± 6%   63.58n ± 7%  -62.27% (p=0.000 n=10)
Hash1K/New-4          2275.5n ± 5%   618.5n ± 2%  -72.82% (p=0.000 n=10)
Hash1K/Sum224-4       2364.5n ± 1%   618.1n ± 1%  -73.86% (p=0.000 n=10)
Hash1K/Sum256-4       2338.5n ± 2%   613.0n ± 2%  -73.79% (p=0.000 n=10)
Hash8K/New-4          17.530µ ± 2%   4.501µ ± 1%  -74.33% (p=0.000 n=10)
Hash8K/Sum224-4       17.456µ ± 2%   4.505µ ± 1%  -74.19% (p=0.000 n=10)
Hash8K/Sum256-4       17.417µ ± 2%   4.504µ ± 1%  -74.14% (p=0.000 n=10)
geomean                1.897µ        564.3n       -70.25%

                    │  bench.old   │               bench.new                │
                    │     B/s      │      B/s       vs base                 │
Hash8Bytes/New-4      45.11Mi ± 6%   116.66Mi ± 5%  +158.62% (p=0.000 n=10)
Hash8Bytes/Sum224-4   45.92Mi ± 3%   117.04Mi ± 8%  +154.89% (p=0.000 n=10)
Hash8Bytes/Sum256-4   45.29Mi ± 6%   120.00Mi ± 7%  +164.99% (p=0.000 n=10)
Hash1K/New-4          429.2Mi ± 5%   1578.9Mi ± 2%  +267.92% (p=0.000 n=10)
Hash1K/Sum224-4       413.0Mi ± 1%   1579.8Mi ± 1%  +282.49% (p=0.000 n=10)
Hash1K/Sum256-4       417.6Mi ± 1%   1593.1Mi ± 2%  +281.53% (p=0.000 n=10)
Hash8K/New-4          445.7Mi ± 1%   1735.9Mi ± 1%  +289.50% (p=0.000 n=10)
Hash8K/Sum224-4       447.6Mi ± 2%   1734.5Mi ± 1%  +287.54% (p=0.000 n=10)
Hash8K/Sum256-4       448.6Mi ± 2%   1734.8Mi ± 1%  +286.75% (p=0.000 n=10)
geomean               204.3Mi         686.8Mi       +236.11%

                    │  bench.old   │              bench.new              │
                    │     B/op     │    B/op     vs base                 │
Hash8Bytes/New-4      0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8Bytes/Sum224-4   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8Bytes/Sum256-4   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/New-4          0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/Sum224-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/Sum256-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/New-4          0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/Sum224-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/Sum256-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                          ²               +0.00%                ²
¹ all samples are equal
² summaries must be >0 to compute geomean

                    │  bench.old   │              bench.new              │
                    │  allocs/op   │ allocs/op   vs base                 │
Hash8Bytes/New-4      0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8Bytes/Sum224-4   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8Bytes/Sum256-4   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/New-4          0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/Sum224-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash1K/Sum256-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/New-4          0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/Sum224-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
Hash8K/Sum256-4       0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                          ²               +0.00%                ²
¹ all samples are equal
² summaries must be >0 to compute geomean

Fixes #50543.

Change-Id: Ie9783647fe82f40fcbd91989a96a24f2d3d5b9a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/408795
Reviewed-by: Paulo Gomes <paulo.gomes.uk@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>