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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 22
Affects Version/s: 22
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b24
CPU:

riscv

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8323388	21.0.3-oracle	Fei Yang	P4	Resolved	Fixed	b01
JDK-8320158	21.0.2	Fei Yang	P4	Resolved	Fixed	b08
JDK-8320226	17.0.10	Gui Cao	P4	Resolved	Fixed	b04

We can improve the MD5 intrinsic on RISC-V a bit more:

* do the buffer loads more incrementally instead of all in one go
* we don't have to mask off the top 32 bits of a register before an addw (and we don't need the mask32 register)

The changes show a 1.5%-2% improvement on a VisionFive 2 board.

backported by

JDK-8320158 RISC-V: improve MD5 intrinsic

Resolved

JDK-8320226 RISC-V: improve MD5 intrinsic

Resolved

JDK-8323388 RISC-V: improve MD5 intrinsic

Resolved

relates to

JDK-8313322 RISC-V: implement MD5 intrinsic

Resolved

links to

Commit openjdk/jdk17u-dev/49d5323e

Commit openjdk/jdk21u/dfca3b95

Commit openjdk/jdk/fa331d71

Review openjdk/jdk17u-dev/1960

Review openjdk/jdk21u/360

Review openjdk/jdk/16453

(5 links to)

Assignee:: Tony Printezis

Reporter:: Tony Printezis

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2023-10-31 08:23

Updated:: 2024-01-09 10:39

Resolved:: 2023-11-08 11:57

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