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ecp5: Improve delay estimates

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2018-11-13 14:27:23 +00:00
parent 06e0e1ffee
commit 959d163ba7
1 changed files with 2 additions and 2 deletions
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4
ecp5/arch.cc
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@ -400,7 +400,7 @@ BelId Arch::getBelByLocation(Loc loc) const
delay_t Arch::estimateDelay(WireId src, WireId dst) const delay_t Arch::estimateDelay(WireId src, WireId dst) const
{ {
return 100 * (abs(src.location.x - dst.location.x) + abs(src.location.y - dst.location.y)); return 170 * (abs(src.location.x - dst.location.x) + abs(src.location.y - dst.location.y));
} }
delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const
@ -409,7 +409,7 @@ delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const
auto driver_loc = getBelLocation(driver.cell->bel); auto driver_loc = getBelLocation(driver.cell->bel);
auto sink_loc = getBelLocation(sink.cell->bel); auto sink_loc = getBelLocation(sink.cell->bel);
return 100 * (abs(driver_loc.x - sink_loc.x) + abs(driver_loc.y - sink_loc.y)); return 170 * (abs(driver_loc.x - sink_loc.x) + abs(driver_loc.y - sink_loc.y));
} }
bool Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t &budget) const { return false; } bool Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t &budget) const { return false; }