Increase card offset mask

[earthling-amzn]

On 32-bit platforms, a 512 byte card covers 128 words. On 64-bit platforms, a 1024 byte card (the maximum allowed) also covers 128 words. This change increases the size of the mask we use when encoding object start offsets to handle these situations.

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Progress

• Change must not contain extraneous whitespace
• Change must be properly reviewed (1 review required, with at least 1 Committer)

Reviewers

• Kelvin Nilsen (@kdnilsen - Committer)

Reviewing

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Update a local copy of the PR:
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$ git pr checkout 275

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[mlbridge]

Webrevs

• 01: Full - Incremental (8848cf2e)
• 00: Full (9280938f)

[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:

Increase card offset mask

Reviewed-by: kdnilsen

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[earthling-amzn]

/integrate

[openjdk]

Going to push as commit f969d53.

[openjdk]

@earthling-amzn Pushed as commit f969d53.

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