8374195: TestReplaceNarrowPhiWithBottomPhi fails on ppc64 platforms in (fast)debug

[TheRealMDoerr]

This test makes assumptions about the C2 ideal graph which are not true for PPC64. We need to get tests green also in jdk26 where the new test has landed in the meantime, so simply disabling it for the platform.
Test improvements can be done later if needed.

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Issue

• JDK-8374195: TestReplaceNarrowPhiWithBottomPhi fails on ppc64 platforms in (fast)debug (Bug - P3)

Reviewers

• Matthias Baesken (@MBaesken - Reviewer)
• Johannes Bechberger (@parttimenerd - Committer)

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[openjdk]

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

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8374195: TestReplaceNarrowPhiWithBottomPhi fails on ppc64 platforms in (fast)debug

Reviewed-by: mbaesken, jbechberger

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At the time when this comment was updated there had been 23 new commits pushed to the master branch:

• 08450f2: 8374326: Update copyright year to 2025 for jdk.jpackage in files where it was missed
• 92c6799: 8374361: Update copyright year to 2025 for jdk.hotspot.agent in files where it was missed
• 078e71f: 8344345: test/hotspot/gtest/x86/x86-asmtest.py has trailing whitespaces
• ... and 20 more: https://git.openjdk.org/jdk/compare/f1c50412f0ded30f88720e9489e3ff4dd347ffa3...master

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[mlbridge]

Webrevs

• 00: Full (5e751ccd)

[TheRealMDoerr]

Thanks for the reviews! I'll also create a backport.
/integrate

[openjdk]

Going to push as commit e4e923a.
Since your change was applied there have been 23 commits pushed to the master branch:

• 08450f2: 8374326: Update copyright year to 2025 for jdk.jpackage in files where it was missed
• 92c6799: 8374361: Update copyright year to 2025 for jdk.hotspot.agent in files where it was missed
• 078e71f: 8344345: test/hotspot/gtest/x86/x86-asmtest.py has trailing whitespaces
• ... and 20 more: https://git.openjdk.org/jdk/compare/f1c50412f0ded30f88720e9489e3ff4dd347ffa3...master

Your commit was automatically rebased without conflicts.

[openjdk]

@TheRealMDoerr Pushed as commit e4e923a.

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