Bug ID: JDK-8281043 Intrinsify recursive ObjectMonitor locking for PPC64

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 16,17,18,19

Priority: P4
Status: Resolved
Resolution: Fixed
CPU: ppc

Submitted: 2022-02-01
Updated: 2022-03-03
Resolved: 2022-02-04

Versions (Unresolved/Resolved/Fixed)

The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.

JDK 17	JDK 19
17.0.4Fixed	19 b09Fixed

The C2 fast_lock and fast_unlock intrinsics don't support recursive ObjectMonitor locking. Some workload can significantly benefit from this.

As this is a brand new enhancement, I think we should wait for 17.0.4. Please add the tag again after March 2. Thanks.
10-02-2022
A pull request was submitted for review. URL: https://git.openjdk.java.net/jdk17u-dev/pull/150 Date: 2022-02-09 11:48:12 +0000
09-02-2022
Fix Request (17u): Fix for a performance regression from jdk16. x86/aarch64 version is already backported (JDK-8277180). Applies cleanly.
09-02-2022
Changeset: 46c6c6f3 Author: Martin Doerr <mdoerr@openjdk.org> Date: 2022-02-04 09:13:41 +0000 URL: https://git.openjdk.java.net/jdk/commit/46c6c6f308b5ec0ec3b762df4b76de555287474c
04-02-2022
A pull request was submitted for review. URL: https://git.openjdk.java.net/jdk/pull/7305 Date: 2022-02-01 13:23:42 +0000
01-02-2022

Cloners :	JDK-8277180 - Intrinsify recursive ObjectMonitor locking for C2 x64 and A64
Duplicate :	JDK-8263864 - ~17% regression for DaCapo h2 after JDK-8253064
Relates :	JDK-8277431 - riscv: Intrinsify recursive ObjectMonitor locking for C2
Relates :	JDK-8253064 - monitor list simplifications and getting rid of TSM