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ecp5: Improve router performance on slower speed grades

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2024-02-20 10:44:00 +01:00 committed by myrtle
parent aa26ba7ea1
commit 05ed9308d6
1 changed files with 4 additions and 4 deletions
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8
ecp5/arch.cc
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@ -501,7 +501,7 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const
int dx = abs(src_loc.first - dst_loc.first), dy = abs(src_loc.second - dst_loc.second); int dx = abs(src_loc.first - dst_loc.first), dy = abs(src_loc.second - dst_loc.second);
return (120 - 22 * args.speed) * return (80 - 9 * args.speed) *
(6 + std::max(dx - 5, 0) + std::max(dy - 5, 0) + 2 * (std::min(dx, 5) + std::min(dy, 5))); (6 + std::max(dx - 5, 0) + std::max(dy - 5, 0) + 2 * (std::min(dx, 5) + std::min(dy, 5)));
} }
@ -579,11 +579,11 @@ delay_t Arch::predictDelay(BelId src_bel, IdString src_pin, BelId dst_bel, IdStr
int dx = abs(driver_loc.x - sink_loc.x), dy = abs(driver_loc.y - sink_loc.y); int dx = abs(driver_loc.x - sink_loc.x), dy = abs(driver_loc.y - sink_loc.y);
return (120 - 22 * args.speed) * return (80 - 9 * args.speed) *
(3 + std::max(dx - 5, 0) + std::max(dy - 5, 0) + 2 * (std::min(dx, 5) + std::min(dy, 5))); (6 + std::max(dx - 5, 0) + std::max(dy - 5, 0) + 2 * (std::min(dx, 5) + std::min(dy, 5)));
} }
delay_t Arch::getRipupDelayPenalty() const { return 400; } delay_t Arch::getRipupDelayPenalty() const { return 550 - 50 * args.speed; }
// ----------------------------------------------------------------------- // -----------------------------------------------------------------------