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Type: Sub-task
Resolution: Fixed
Priority: P3
Fix Version/s: 22
Affects Version/s: 21, 22
Component/s: hotspot
Labels:

Subcomponent:
compiler
Introduced In Build:
b19
Introduced In Version:

21
Resolved In Build:
b04
CPU:

x86_64

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8311352	21.0.1	Tobias Hartmann	P3	Resolved	Fixed	b02
JDK-8311019	21	Tobias Hartmann	P3	Resolved	Fixed	b29

VectorAPI JMH micros shows performance drop in Vector.slice and unslice operations w.r.t JDK-20 on AVX3 and legacy targets.

Other dependent API like castShape with non-zero part number also show performance degradations.

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shuffle_compute.java
4 kB
2023-06-25 08:01
Slice-Unslice Performance JDK-20 vs JDK-mainline.xlsx
31 kB
2023-06-21 03:52

backported by

JDK-8311019 [BACKOUT] 8304450: [vectorapi] Refactor VectorShuffle implementation

Resolved

JDK-8311352 [BACKOUT] 8304450: [vectorapi] Refactor VectorShuffle implementation

Resolved

relates to

JDK-8303762 Optimize vector slice operation with constant index using VPALIGNR instruction

Open

JDK-8304450 [vectorapi] Refactor VectorShuffle implementation

Resolved

JDK-8310173 Update --release 21 symbol information for JDK 21 build 29

Resolved

links to

Commit openjdk/jdk21/9998c07b

Commit openjdk/jdk/ff9a7541

Review openjdk/jdk21/68

Review(master) openjdk/jdk/14629

(4 links to)

Assignee:: Jatin Bhateja
Reporter:: Jatin Bhateja
Votes:: 0 Vote for this issue
Watchers:: 4 Start watching this issue

Created:: 2023-06-20 11:08
Updated:: 2024-08-01 01:59
Resolved:: 2023-06-26 11:36

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