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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 16
Affects Version/s: 16
Component/s: hotspot
Labels:
- redhat-interest

Subcomponent:
compiler
Resolved In Build:
b25

This is fork off the SizeOf JEP, JDK-8249196. There is already the entry point in JDK that can use the intrinsic like this: Instrumentation.getInstanceSize. Therefore, we can implement the C1/C2 intrinsic now, hook it up to Instrumentation, and let the tools use that fast path today.

Work is done here:
https://github.com/openjdk/jdk/pull/650

relates to

JDK-8280003 C1: Reconsider uses of logical_and immediates in LIRGenerator::do_getObjectSize

Resolved

JDK-8279301 c1 getObjectSize intrinsic should guard round mask constant

Closed

JDK-8249196 Low-level Object layout introspection methods

Draft

links to

Commit openjdk/jdk/b4d01867

Review openjdk/jdk/650

Assignee:: Aleksey Shipilev
Reporter:: Aleksey Shipilev
Votes:: 0 Vote for this issue
Watchers:: 5 Start watching this issue

Created:: 2020-09-23 02:17
Updated:: 2024-12-12 22:11
Resolved:: 2020-11-13 00:20

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