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Type: Bug
Resolution: Fixed
Priority: P4
Fix Version/s: 19
Affects Version/s: 11, 17, 18, 19
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b16

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8284267	18.0.2	Tobias Hartmann	P4	Resolved	Fixed	b02
JDK-8283968	17.0.4-oracle	Tobias Hartmann	P4	Resolved	Fixed	b02
JDK-8284340	17.0.4	Martin Doerr	P4	Resolved	Fixed	b01

IdealLoopTree::policy_unroll_slp_analysis() restricts unrolling of loops that are found to be candidate for superword but if superword then fails, unrolling doesn't always resume.

backported by

JDK-8283968 C2: loop candidate for superword not always unrolled fully if superword fails

Resolved

JDK-8284267 C2: loop candidate for superword not always unrolled fully if superword fails

Resolved

JDK-8284340 C2: loop candidate for superword not always unrolled fully if superword fails

Resolved

duplicates

JDK-8286940 [IR Framework] Allow IR tests to build and use Whitebox without -DSkipWhiteBoxInstall=true

Resolved

relates to

JDK-8285695 Performance regression in C2 loop unrolling

Closed

links to

Commit openjdk/jdk17u-dev/b5e83882

Commit openjdk/jdk18u/7ca0b988

Commit openjdk/jdk/14c20bc0

Review openjdk/jdk17u-dev/333

Review openjdk/jdk18u/84

Review openjdk/jdk/7822

(6 links to)

Assignee:: Roland Westrelin

Reporter:: Roland Westrelin

Votes:: 0 Vote for this issue

Watchers:: 6 Start watching this issue

Created:: 2022-03-15 08:35

Updated:: 2022-05-17 23:50

Resolved:: 2022-03-24 05:56

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