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rsz: hold check dont touch instances #6633

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@gadfort gadfort commented Feb 3, 2025

Adds:

  • check for dont_touch on hold repair for instances to prevent resizer from attempting to change instance connections.

@gadfort gadfort requested a review from maliberty February 3, 2025 20:24
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github-actions bot commented Feb 3, 2025

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

@@ -440,7 +442,16 @@ void RepairHold::repairEndHold(Vertex* end_vertex,
}
}
}
if (!load_pins.empty()) {
// check for dont touch loads
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Rather than prevent buffering if there is a dont-touch fanout you can just leave the fanouts attached and add the new net to the buffer's input. I believe RepairDesign::makeRepeater does this and perhaps could be generalized?

@gadfort gadfort marked this pull request as draft February 4, 2025 17:17
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