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Type: Bug
Resolution: Fixed
Priority: P2
Fix Version/s: 9
Affects Version/s: 8u60, 9
Component/s: core-libs
Labels:
- 8u40-defer-approved
- noreg-perf

Subcomponent:
java.lang.invoke
Resolved In Build:
b52
Verification:
Verified

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8084554	emb-9	Vladimir Ivanov	P2	Resolved	Fixed	team
JDK-8086903	8u65	Vladimir Ivanov	P2	Resolved	Fixed	b01
JDK-8071764	8u60	Vladimir Ivanov	P2	Closed	Fixed	b14
JDK-8138045	emb-8u65	Unassigned	P2	Resolved	Fixed	b01
JDK-8080009	emb-8u60	Vladimir Ivanov	P2	Resolved	Fixed	team

Overhead of non-inlined MH.invoke/invokeExact calls significantly increased with LambdaForm sharing.
The cause is JIT compiler can't produce a single nmethod for the whole MethodHandle chain underneath, so the execution is spread around numerous nmethods (1 per each MethodHandle in the chain).

ILW = HLH = P2
I = H: performance regression (significant, in some situations)
L = L: only MH.invoke/invokeExact calls with non-constant receiver are affected
W = H: none

backported by

JDK-8080009 Customize LambdaForms which are invoked using MH.invoke/invokeExact

Resolved

JDK-8084554 Customize LambdaForms which are invoked using MH.invoke/invokeExact

Resolved

JDK-8086903 Customize LambdaForms which are invoked using MH.invoke/invokeExact

Resolved

JDK-8138045 Customize LambdaForms which are invoked using MH.invoke/invokeExact

Resolved

JDK-8071764 Customize LambdaForms which are invoked using MH.invoke/invokeExact

Closed

relates to

JDK-8063137 Never taken branches should be pruned when GWT LambdaForms are shared

Closed

JDK-8046703 JEP 210: LambdaForm Reduction and Caching

Closed

(2 relates to)

Assignee:: Vladimir Ivanov

Reporter:: Vladimir Ivanov

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2015-01-21 06:42

Updated:: 2017-08-24 13:50

Resolved:: 2015-01-29 13:43

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