Call VZEROALL for a 30% benchmark improvement

Call VZEROALL before leaving any ASM function. I didn't expect this large a speedup, so I'm a little suspicious.
hexon · Oct 15, 2024 · b5459ff · b5459ff
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diff --git a/README.md b/README.md
@@ -28,37 +28,37 @@ goos: linux
 goarch: amd64
 pkg: github.com/hexon/vectorcmp
 cpu: 13th Gen Intel(R) Core(TM) i9-13900
-                              │    purego     │                avx2                 │
-                              │    sec/op     │   sec/op     vs base                │
-VectorEquals8-32                191.766µ ± 2%   1.240µ ± 4%  -99.35% (p=0.000 n=10)
-VectorGreaterThan8-32           189.871µ ± 1%   1.198µ ± 5%  -99.37% (p=0.000 n=10)
-VectorLessThan8-32              189.940µ ± 2%   1.234µ ± 3%  -99.35% (p=0.000 n=10)
-VectorGreaterEquals8-32         200.345µ ± 1%   1.278µ ± 3%  -99.36% (p=0.000 n=10)
-VectorLesserEquals8-32          198.190µ ± 2%   1.302µ ± 3%  -99.34% (p=0.000 n=10)
-VectorEquals16-32               187.738µ ± 2%   2.391µ ± 2%  -98.73% (p=0.000 n=10)
-VectorGreaterThan16-32          191.861µ ± 1%   2.405µ ± 4%  -98.75% (p=0.000 n=10)
-VectorLessThan16-32             189.357µ ± 2%   2.406µ ± 3%  -98.73% (p=0.000 n=10)
-VectorGreaterEquals16-32        201.101µ ± 2%   2.485µ ± 3%  -98.76% (p=0.000 n=10)
-VectorLesserEquals16-32         197.853µ ± 1%   2.547µ ± 2%  -98.71% (p=0.000 n=10)
-VectorEquals32-32               192.640µ ± 1%   4.725µ ± 2%  -97.55% (p=0.000 n=10)
-VectorEqualsFloat32-32          209.408µ ± 1%   3.275µ ± 2%  -98.44% (p=0.000 n=10)
-VectorGreaterThan32-32          192.983µ ± 1%   3.970µ ± 3%  -97.94% (p=0.000 n=10)
-VectorGreaterThanFloat32-32     210.209µ ± 2%   3.264µ ± 1%  -98.45% (p=0.000 n=10)
-VectorLessThan32-32             188.972µ ± 1%   3.870µ ± 3%  -97.95% (p=0.000 n=10)
-VectorLessThanFloat32-32        211.101µ ± 3%   3.264µ ± 1%  -98.45% (p=0.000 n=10)
-VectorGreaterEquals32-32        199.521µ ± 1%   3.955µ ± 9%  -98.02% (p=0.000 n=10)
-VectorGreaterEqualsFloat32-32   217.290µ ± 1%   3.270µ ± 1%  -98.50% (p=0.000 n=10)
-VectorLesserEquals32-32         200.432µ ± 1%   4.103µ ± 3%  -97.95% (p=0.000 n=10)
-VectorLesserEqualsFloat32-32    215.699µ ± 2%   3.285µ ± 1%  -98.48% (p=0.000 n=10)
-VectorEquals64-32               194.138µ ± 2%   6.831µ ± 5%  -96.48% (p=0.000 n=10)
-VectorEqualsFloat64-32          228.983µ ± 1%   6.431µ ± 3%  -97.19% (p=0.000 n=10)
-VectorGreaterThan64-32          191.010µ ± 2%   7.629µ ± 2%  -96.01% (p=0.000 n=10)
-VectorGreaterThanFloat64-32     205.197µ ± 1%   6.540µ ± 2%  -96.81% (p=0.000 n=10)
-VectorLessThan64-32             192.766µ ± 3%   7.661µ ± 2%  -96.03% (p=0.000 n=10)
-VectorLessThanFloat64-32        212.995µ ± 2%   6.423µ ± 1%  -96.98% (p=0.000 n=10)
-VectorGreaterEquals64-32        203.198µ ± 2%   7.548µ ± 3%  -96.29% (p=0.000 n=10)
-VectorGreaterEqualsFloat64-32   220.453µ ± 2%   6.535µ ± 1%  -97.04% (p=0.000 n=10)
-VectorLesserEquals64-32         201.495µ ± 2%   7.744µ ± 4%  -96.16% (p=0.000 n=10)
-VectorLesserEqualsFloat64-32    215.303µ ± 3%   6.538µ ± 1%  -96.96% (p=0.000 n=10)
-geomean                           201.1µ        3.548µ       -98.24%
+                              │     purego     │                avx2                 │
+                              │     sec/op     │   sec/op     vs base                │
+VectorEquals8-32                191765.5n ± 2%   912.5n ± 2%  -99.52% (p=0.000 n=10)
+VectorGreaterThan8-32           189871.0n ± 1%   899.4n ± 1%  -99.53% (p=0.000 n=10)
+VectorLessThan8-32              189939.5n ± 2%   903.3n ± 1%  -99.52% (p=0.000 n=10)
+VectorGreaterEquals8-32         200345.0n ± 1%   969.2n ± 3%  -99.52% (p=0.000 n=10)
+VectorLesserEquals8-32          198189.5n ± 2%   973.8n ± 3%  -99.51% (p=0.000 n=10)
+VectorEquals16-32                187.738µ ± 2%   1.892µ ± 7%  -98.99% (p=0.000 n=10)
+VectorGreaterThan16-32           191.861µ ± 1%   1.890µ ± 6%  -99.01% (p=0.000 n=10)
+VectorLessThan16-32              189.357µ ± 2%   1.894µ ± 4%  -99.00% (p=0.000 n=10)
+VectorGreaterEquals16-32         201.101µ ± 2%   2.003µ ± 5%  -99.00% (p=0.000 n=10)
+VectorLesserEquals16-32          197.853µ ± 1%   1.991µ ± 5%  -98.99% (p=0.000 n=10)
+VectorEquals32-32                192.640µ ± 1%   3.685µ ± 5%  -98.09% (p=0.000 n=10)
+VectorEqualsFloat32-32           209.408µ ± 1%   3.156µ ± 1%  -98.49% (p=0.000 n=10)
+VectorGreaterThan32-32           192.983µ ± 1%   3.717µ ± 2%  -98.07% (p=0.000 n=10)
+VectorGreaterThanFloat32-32      210.209µ ± 2%   3.156µ ± 1%  -98.50% (p=0.000 n=10)
+VectorLessThan32-32              188.972µ ± 1%   3.729µ ± 4%  -98.03% (p=0.000 n=10)
+VectorLessThanFloat32-32         211.101µ ± 3%   3.137µ ± 2%  -98.51% (p=0.000 n=10)
+VectorGreaterEquals32-32         199.521µ ± 1%   3.859µ ± 4%  -98.07% (p=0.000 n=10)
+VectorGreaterEqualsFloat32-32    217.290µ ± 1%   3.179µ ± 1%  -98.54% (p=0.000 n=10)
+VectorLesserEquals32-32          200.432µ ± 1%   3.907µ ± 3%  -98.05% (p=0.000 n=10)
+VectorLesserEqualsFloat32-32     215.699µ ± 2%   3.167µ ± 2%  -98.53% (p=0.000 n=10)
+VectorEquals64-32                194.138µ ± 2%   6.628µ ± 4%  -96.59% (p=0.000 n=10)
+VectorEqualsFloat64-32           228.983µ ± 1%   6.341µ ± 1%  -97.23% (p=0.000 n=10)
+VectorGreaterThan64-32           191.010µ ± 2%   7.453µ ± 3%  -96.10% (p=0.000 n=10)
+VectorGreaterThanFloat64-32      205.197µ ± 1%   6.357µ ± 1%  -96.90% (p=0.000 n=10)
+VectorLessThan64-32              192.766µ ± 3%   7.443µ ± 3%  -96.14% (p=0.000 n=10)
+VectorLessThanFloat64-32         212.995µ ± 2%   6.323µ ± 1%  -97.03% (p=0.000 n=10)
+VectorGreaterEquals64-32         203.198µ ± 2%   7.407µ ± 3%  -96.35% (p=0.000 n=10)
+VectorGreaterEqualsFloat64-32    220.453µ ± 2%   6.391µ ± 2%  -97.10% (p=0.000 n=10)
+VectorLesserEquals64-32          201.495µ ± 2%   7.541µ ± 3%  -96.26% (p=0.000 n=10)
+VectorLesserEqualsFloat64-32     215.303µ ± 3%   6.388µ ± 2%  -97.03% (p=0.000 n=10)
+geomean                            201.1µ        3.160µ       -98.43%
 ```