diff options
| author | David Shah <dave@ds0.me> | 2018-11-13 14:27:23 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2018-11-13 14:27:23 +0000 |
| commit | 959d163ba71fd2fdf08911e9be47f4f1d60514e5 (patch) | |
| tree | 75b5a800949cac76fd1118040c691b33375f2226 /ecp5 | |
| parent | 06e0e1ffeec9b06cecc213728c279b9235316df9 (diff) | |
| download | nextpnr-959d163ba71fd2fdf08911e9be47f4f1d60514e5.tar.gz nextpnr-959d163ba71fd2fdf08911e9be47f4f1d60514e5.tar.bz2 nextpnr-959d163ba71fd2fdf08911e9be47f4f1d60514e5.zip | |
ecp5: Improve delay estimates
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 4a0b31b5..ffd6ebcd 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 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 @@ -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 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; } |