8342927: GenShen: Guarantee slices of time for coalesce and filling

[earthling-amzn]

Clean backport.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8342927: GenShen: Guarantee slices of time for coalesce and filling (Task - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/132/head:pull/132
$ git checkout pull/132

Update a local copy of the PR:
$ git checkout pull/132
$ git pull https://git.openjdk.org/shenandoah-jdk21u.git pull/132/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 132

View PR using the GUI difftool:
$ git pr show -t 132

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/shenandoah-jdk21u/pull/132.diff

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[bridgekeeper]

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[openjdk]

@earthling-amzn This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8342927: GenShen: Guarantee slices of time for coalesce and filling

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (701e3c0e)

[earthling-amzn]

/integrate

[openjdk]

Going to push as commit 9dcd1f2.

[openjdk]

@earthling-amzn Pushed as commit 9dcd1f2.

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