8253029: [PPC64] Remove obsolete Power6 code

[TheRealMDoerr]

New pull request:
Using a branch, updated Copyright, removed some more unused code.

[Previous text]
The recent PPC64 platform files still contain code which is part of a Power6 optimization called Power6Scheduler. However, this functionality was never completely contributed so it was never usable in the OpenJDK.
We should remove it since we're no longer optimizing for Power6.

---

Progress

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

Issue

• JDK-8253029: [PPC64] Remove obsolete Power6 code

Reviewers

• David Holmes (@dholmes-ora - Reviewer)
• Lutz Schmidt (@RealLucy - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/127/head:pull/127
$ git checkout pull/127

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (d56ed3e)

[dholmes-ora]

/csr needed

[openjdk]

@dholmes-ora this pull request will not be integrated until the CSR request JDK-8253046 for issue JDK-8253029 has been approved.

[dholmes-ora]

Code changes seem fine.

[openjdk]

@TheRealMDoerr This change now passes all automated pre-integration checks. In addition to the automated checks, the change must also fulfill all project specific requirements

After integration, the commit message will be:

8253029: [PPC64] Remove obsolete Power6 code

Reviewed-by: dholmes, lucy

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Since the source branch of this PR was last updated there have been 23 commits pushed to the master branch:

• e6a493a: 8252882: Clean up jdk.javadoc and the related parts of jdk.compiler
• 68da63d: 8240658: Code completion not working for lambdas in method invocations that require type inference
• b05290a: 8252898: remove bulk registration of JFR CompilerPhaseType names
• 779d2c3: 8253084: Zero VM is broken after JDK-8252689
• 07da3a1: 8253030: ZGC: Change ZMarkCompleteTimeout unit to microseconds
• f978f6f: 8252689: Classes are loaded from jrt:/java.base even when CDS is used
• c5e63b6: 8248186: Move CDS C++ vtable code to cppVtables.cpp
• 03a4df0: 8244778: Archive full module graph in CDS
• 998ce78: 8252543: [JVMCI] Libgraal can deadlock in blocking compilation mode
• b1b0f0b: 8253066: typo in Stream.mapMulti
• ... and 13 more: https://git.openjdk.java.net/jdk/compare/ff21696bc00d447bda61df826f1ff2d2ab2cf969...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid automatic rebasing, please merge master into your branch, and then specify the current head hash when integrating, like this: /integrate e6a493ab8820e38493308342621c3c7993b06ccb.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[RealLucy]

Hi Martin,
your changes look good to me.
Thanks for the tedious comments removal! Not a task you been for.
Best,
Lutz

[TheRealMDoerr]

Thanks for the reviews.

[TheRealMDoerr]

/integrate

[openjdk]

@TheRealMDoerr Since your change was applied there have been 23 commits pushed to the master branch:

• e6a493a: 8252882: Clean up jdk.javadoc and the related parts of jdk.compiler
• 68da63d: 8240658: Code completion not working for lambdas in method invocations that require type inference
• b05290a: 8252898: remove bulk registration of JFR CompilerPhaseType names
• 779d2c3: 8253084: Zero VM is broken after JDK-8252689
• 07da3a1: 8253030: ZGC: Change ZMarkCompleteTimeout unit to microseconds
• f978f6f: 8252689: Classes are loaded from jrt:/java.base even when CDS is used
• c5e63b6: 8248186: Move CDS C++ vtable code to cppVtables.cpp
• 03a4df0: 8244778: Archive full module graph in CDS
• 998ce78: 8252543: [JVMCI] Libgraal can deadlock in blocking compilation mode
• b1b0f0b: 8253066: typo in Stream.mapMulti
• ... and 13 more: https://git.openjdk.java.net/jdk/compare/ff21696bc00d447bda61df826f1ff2d2ab2cf969...master

Your commit was automatically rebased without conflicts.

Pushed as commit 9c24a56.

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