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rsz: Fix "buffer ball" issues #6800

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openroad-ci
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Two issues with the resizer have conspired to create this "buffer ball" of split buffers connected back-to-back, see the commits. Cc @gudeh

Screenshot 2025-03-03 at 17 00 12

Screenshot 2025-03-03 at 17 01 23

povik added 2 commits March 3, 2025 16:57
Signed-off-by: Martin Povišer <povik@cutebit.org>
When we break out of the repair loop we want to restore previous best
result. Any changes done since we created the checkpoint has degraded
timing.

Signed-off-by: Martin Povišer <povik@cutebit.org>
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github-actions bot commented Mar 3, 2025

clang-tidy review says "All clean, LGTM! 👍"

@maliberty
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If you make a test- rather than a secure- branch it will only run the public tests in ORFS (a lot faster). I think only asap7 has output-to-output edges (we've had other bugs in the past due to them). They are generally a bad idea but legal.

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povik commented Mar 3, 2025

OK, I've pushed test-rsz-fix-buffer-ball. Feel free to cancel the secure run if you don't think it's worth it.

Signed-off-by: Martin Povišer <povik@cutebit.org>
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github-actions bot commented Mar 3, 2025

clang-tidy review says "All clean, LGTM! 👍"

Signed-off-by: Martin Povišer <povik@cutebit.org>
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github-actions bot commented Mar 4, 2025

clang-tidy review says "All clean, LGTM! 👍"

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povik commented Mar 4, 2025

@maliberty CI green, we can merge

@eder-matheus eder-matheus merged commit fb62c2c into The-OpenROAD-Project:master Mar 4, 2025
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@openroad-ci openroad-ci deleted the rsz-fix-buffer-ball branch March 4, 2025 16:30
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4 participants