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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 9
Affects Version/s: hs16
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b103
CPU:

sparc
OS:

solaris_10

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8149235	8u101	Andreas Eriksson	P4	Resolved	Fixed	b01
JDK-8144827	8u92	Andreas Eriksson	P4	Resolved	Fixed	b02
JDK-8155331	emb-8u101	Andreas Eriksson	P4	Resolved	Fixed	b01
JDK-8180964	openjdk7u	Unassigned	P4	Resolved	Fixed	master

Currently C2 removes safepoints in counted loops. It creates problem described, for example, in ~~JDK-5014723~~. Add new C2 product flag UseCountedLoopSafepoints to keep safepoints in counted loops. Its default value will be false.

backported by

JDK-8144827 Add new C2 flag to keep safepoints in counted loops.

Resolved

JDK-8149235 Add new C2 flag to keep safepoints in counted loops.

Resolved

JDK-8155331 Add new C2 flag to keep safepoints in counted loops.

Resolved

JDK-8180964 Add new C2 flag to keep safepoints in counted loops.

Resolved

duplicates

JDK-8174075 Random performance dropouts during parallel execution

Closed

JDK-8177693 Java VM freezes with very simple program

Closed

relates to

JDK-8146096 [TEST BUG] compiler/loopopts/UseCountedLoopSafepoints.java Timeouts

Resolved

JDK-5014723 implement "strip mining" loop optimization

Resolved

JDK-8144935 C2: safepoint is pruned from a non-counted loop

Closed

JDK-8161147 jvm crashes when -XX:+UseCountedLoopSafepoints is enabled

Closed

(1 duplicates, 4 relates to)

Add documentation for JDK-6869327 to Tools Reference Guide

Resolved

Shilpa Chetan

2016-12-16

Assignee:: Andreas Eriksson (Inactive)

Reporter:: Vladimir Kozlov

Votes:: 0 Vote for this issue

Watchers:: 5 Start watching this issue

Created:: 2009-08-06 12:36

Updated:: 2019-10-22 22:35

Resolved:: 2015-12-04 07:39

Imported:: 17/Sep/12 11:16 PM

Indexed:: 21/Aug/12 2:13 AM

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