Integrated: 8265128: [REDO] Optimize Vector API slice and unslice operations

[Sandhya Viswanathan]

On Thu, 29 Apr 2021 21:29:03 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

> All the slice and unslice variants that take more than one argument can benefit from already intrinsic methods on similar lines as slice(origin) and unslice(origin).
> 
> Changes include:
>  * Rewrite Vector API slice/unslice using already intrinsic methods
>  * Fix in library_call.cpp:inline_preconditions_checkIndex() to not modify control if intrinsification fails
>  * Vector API conversion tests thresholds adjustment
>  
> Base Performance:
> Benchmark (size) Mode Cnt Score Error Units
> TestSlice.vectorSliceOrigin 1024 thrpt 5 11763.372 ± 254.580 ops/ms
> TestSlice.vectorSliceOriginVector 1024 thrpt 5 599.286 ± 326.770 ops/ms
> TestSlice.vectorSliceUnsliceOrigin 1024 thrpt 5 6627.601 ± 22.060 ops/ms
> TestSlice.vectorSliceUnsliceOriginVector 1024 thrpt 5 401.858 ± 220.340 ops/ms
> TestSlice.vectorSliceUnsliceOriginVectorPart 1024 thrpt 5 421.993 ± 231.703 ops/ms
> 
> Performance with patch:
> Benchmark (size) Mode Cnt Score Error Units
> TestSlice.vectorSliceOrigin 1024 thrpt 5 11792.091 ± 37.296 ops/ms
> TestSlice.vectorSliceOriginVector 1024 thrpt 5 8388.174 ± 115.886 ops/ms
> TestSlice.vectorSliceUnsliceOrigin 1024 thrpt 5 6662.159 ± 8.203 ops/ms
> TestSlice.vectorSliceUnsliceOriginVector 1024 thrpt 5 5206.300 ± 43.637 ops/ms
> TestSlice.vectorSliceUnsliceOriginVectorPart 1024 thrpt 5 5194.278 ± 13.376 ops/ms

This pull request has now been integrated.

Changeset: 23446f1f
Author:    Sandhya Viswanathan <sviswanathan at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/23446f1f5ee087376bc1ab89413a011fc52bde1f
Stats:     881 lines in 43 files changed: 172 ins; 518 del; 191 mod

8265128: [REDO] Optimize Vector API slice and unslice operations

Reviewed-by: psandoz, vlivanov

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PR: https://git.openjdk.java.net/jdk/pull/3804