Increase ripup penalties over time
Signed-off-by: Clifford Wolf <clifford@clifford.at>
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312699e590
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66ced800d7
@ -65,7 +65,7 @@ struct Router
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bool routedOkay = false;
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float maxDelay = 0.0;
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Router(Design *design, IdString net_name, bool verbose, bool ripup,
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Router(Design *design, IdString net_name, bool verbose, bool ripup = false,
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float ripup_pip_penalty = 5.0, float ripup_wire_penalty = 5.0)
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{
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auto &chip = design->chip;
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@ -290,6 +290,8 @@ void route_design(Design *design, bool verbose)
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{
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auto &chip = design->chip;
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float maxDelay = 0.0;
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float ripup_pip_penalty = 5.0;
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float ripup_wire_penalty = 5.0;
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log_info("Routing..\n");
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@ -357,7 +359,8 @@ void route_design(Design *design, bool verbose)
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int ripCnt = 0;
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for (auto net_name : ripupQueue) {
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Router router(design, net_name, verbose, true);
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Router router(design, net_name, verbose, true,
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ripup_pip_penalty, ripup_wire_penalty);
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netCnt++;
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visitCnt += router.visitCnt;
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@ -385,6 +388,9 @@ void route_design(Design *design, bool verbose)
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log_info("ripped up %d previously routed nets. continue routing.\n",
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int(netsQueue.size()));
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ripup_pip_penalty *= 1.5;
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ripup_wire_penalty *= 1.5;
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}
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}
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