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| author | David Shah <dave@ds0.me> | 2018-11-16 13:18:22 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2018-11-16 13:26:28 +0000 |
| commit | 50b85da6192b54b1a7ad4675ee88dc61fe169c04 (patch) | |
| tree | eb8ce94d6fa2e9ed0259a5fc99be75ccb0c42a4f /ecp5 | |
| parent | 13244e513b2a7454f2fa6d952df334439d28588a (diff) | |
| download | nextpnr-50b85da6192b54b1a7ad4675ee88dc61fe169c04.tar.gz nextpnr-50b85da6192b54b1a7ad4675ee88dc61fe169c04.tar.bz2 nextpnr-50b85da6192b54b1a7ad4675ee88dc61fe169c04.zip | |
ecp5: Use speed-grade-specific delay estimate
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'ecp5')
| -rw-r--r-- | ecp5/arch.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ecp5/arch.cc b/ecp5/arch.cc index 9b28f56b..0ae063a2 100644 --- a/ecp5/arch.cc +++ b/ecp5/arch.cc @@ -400,7 +400,7 @@ BelId Arch::getBelByLocation(Loc loc) const delay_t Arch::estimateDelay(WireId src, WireId dst) const { - return 170 * (abs(src.location.x - dst.location.x) + abs(src.location.y - dst.location.y)); + return (240 - 20 * args.speed) * (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 @@ -409,7 +409,7 @@ delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const auto driver_loc = getBelLocation(driver.cell->bel); auto sink_loc = getBelLocation(sink.cell->bel); - return 170 * (abs(driver_loc.x - sink_loc.x) + abs(driver_loc.y - sink_loc.y)); + return (240 - 20 * args.speed) * (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; } |