diff options
| author | David Shah <dave@ds0.me> | 2018-11-04 14:03:33 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2018-11-12 14:03:58 +0000 |
| commit | 07e265868b49447b600c6c3da9f042c593f467f3 (patch) | |
| tree | 92a42ef5f8810922513d76435f62a70a61dc7103 /common/timing.cc | |
| parent | e633aa09ccd89040d450b7cb4b7864c4fd8c0468 (diff) | |
| download | nextpnr-07e265868b49447b600c6c3da9f042c593f467f3.tar.gz nextpnr-07e265868b49447b600c6c3da9f042c593f467f3.tar.bz2 nextpnr-07e265868b49447b600c6c3da9f042c593f467f3.zip | |
archapi: Add getDelayFromNS to improve timing algorithm portability
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'common/timing.cc')
| -rw-r--r-- | common/timing.cc | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/common/timing.cc b/common/timing.cc index 10b321f7..60b97655 100644 --- a/common/timing.cc +++ b/common/timing.cc @@ -117,7 +117,7 @@ struct Timing delay_t walk_paths() { - const auto clk_period = delay_t(1.0e12 / ctx->target_freq); + const auto clk_period = ctx->getDelayFromNS(1.0e9 / ctx->target_freq).maxDelay(); // First, compute the topographical order of nets to walk through the circuit, assuming it is a _acyclic_ graph // TODO(eddieh): Handle the case where it is cyclic, e.g. combinatorial loops @@ -344,7 +344,7 @@ struct Timing if (!crit_nets.count(clockPair) || crit_nets.at(clockPair).first < endpoint_arrival) { crit_nets[clockPair] = std::make_pair(endpoint_arrival, net); (*crit_path)[clockPair].path_delay = endpoint_arrival; - (*crit_path)[clockPair].path_period = clk_period; + (*crit_path)[clockPair].path_period = period; (*crit_path)[clockPair].ports.clear(); (*crit_path)[clockPair].ports.push_back(&usr); } @@ -591,7 +591,7 @@ void timing_analysis(Context *ctx, bool print_histogram, bool print_fmax, bool p DelayInfo comb_delay; if (last_port == driver.port) { // Case where we start with a STARTPOINT etc - comb_delay.delay = 0; + comb_delay = ctx->getDelayFromNS(0); } else { ctx->getCellDelay(sink_cell, last_port, driver.port, comb_delay); } |