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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 18
Affects Version/s: 17, 18
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b04
CPU:

x86

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8296885	17.0.7-oracle	Tobias Hartmann	P4	Resolved	Fixed	b01
JDK-8296735	17.0.6	Derek White	P4	Resolved	Fixed	b03

Add the Base64 Decode intrinsic for x86 to utilize AVX-512 for acceleration. Also allows for performance improvement for non-AVX-512 enabled platforms. Due to the nature of MIME-encoded inputs, modify the intrinsic signature to accept an additional parameter (isMIME) for fast-path MIME decoding.

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hs_err_pid24628.log
104 kB
2021-06-24 07:48

backported by

JDK-8296735 Base64 Decoding optimization for x86 using AVX-512

Resolved

JDK-8296885 Base64 Decoding optimization for x86 using AVX-512

Resolved

duplicates

JDK-8193057 Hardware accelerated Base64 support is needed

Closed

relates to

JDK-8270323 Regression > 3% in Perfstartup-Noop-G1 in 18-b4

Closed

JDK-8321599 Data loss in AVX3 Base64 decoding

Resolved

JDK-8273108 RunThese24H crashes with SEGV in markWord::displaced_mark_helper() after JDK-8268276

Closed

links to

Commit openjdk/jdk17u-dev/07050b00

Commit openjdk/jdk/c37988d0

Review openjdk/jdk17u-dev/840

Review openjdk/jdk17u-dev/860

Review openjdk/jdk/4368

(1 relates to, 5 links to)

Assignee:: Scott Gibbons (Inactive)

Reporter:: Sandhya Viswanathan

Votes:: 0 Vote for this issue

Watchers:: 7 Start watching this issue

Created:: 2021-06-04 12:21

Updated:: 2023-12-08 07:43

Resolved:: 2021-06-24 20:21

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