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| author | Eddie Hung <eddieh@ece.ubc.ca> | 2018-07-30 18:59:04 -0700 |
|---|---|---|
| committer | Eddie Hung <eddieh@ece.ubc.ca> | 2018-07-30 18:59:04 -0700 |
| commit | d5049bf0eda113db9a218fe855c7e3d7d65b4384 (patch) | |
| tree | 5df283caca55eba1883788a702ac1e6547c52be5 /generic | |
| parent | 8371c0dd09e5b59189a391fb1b867e5249442046 (diff) | |
| parent | 0daffec2a0efdbea36201eeb5666d208a10d0226 (diff) | |
| download | nextpnr-d5049bf0eda113db9a218fe855c7e3d7d65b4384.tar.gz nextpnr-d5049bf0eda113db9a218fe855c7e3d7d65b4384.tar.bz2 nextpnr-d5049bf0eda113db9a218fe855c7e3d7d65b4384.zip | |
Merge remote-tracking branch 'origin/estdelay' into redist_slack
Diffstat (limited to 'generic')
| -rw-r--r-- | generic/arch.cc | 9 | ||||
| -rw-r--r-- | generic/arch.h | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/generic/arch.cc b/generic/arch.cc index daaa8118..f6c264bb 100644 --- a/generic/arch.cc +++ b/generic/arch.cc @@ -403,6 +403,15 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const return (dx + dy) * grid_distance_to_delay; } +delay_t Arch::predictDelay(WireId src, WireId dst) const +{ + const WireInfo &s = wires.at(src); + const WireInfo &d = wires.at(dst); + int dx = abs(s.x - d.x); + int dy = abs(s.y - d.y); + return (dx + dy) * grid_distance_to_delay; +} + delay_t Arch::getBudgetOverride(NetInfo *net_info, int user_idx, delay_t budget) const { return budget; } // --------------------------------------------------------------- diff --git a/generic/arch.h b/generic/arch.h index e508e0e4..4e4dd663 100644 --- a/generic/arch.h +++ b/generic/arch.h @@ -194,6 +194,7 @@ struct Arch : BaseCtx const std::vector<GroupId> &getGroupGroups(GroupId group) const; delay_t estimateDelay(WireId src, WireId dst) const; + delay_t predictDelay(WireId src, WireId dst) const; delay_t getDelayEpsilon() const { return 0.01; } delay_t getRipupDelayPenalty() const { return 1.0; } float getDelayNS(delay_t v) const { return v; } |