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Merge pull request #105 from YosysHQ/placer1_tmg_ignore

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[placer1] Ignore timing of TMG_IGNORE nets
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Clifford Wolf 2018-11-13 18:48:59 +01:00 committed by GitHub
commit d0ae4c77be
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 6 deletions
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12
common/place_common.cc
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@ -28,19 +28,19 @@ NEXTPNR_NAMESPACE_BEGIN
wirelen_t get_net_metric(const Context *ctx, const NetInfo *net, MetricType type, float &tns)
{
wirelen_t wirelength = 0;
Loc driver_loc;
bool driver_gb;
CellInfo *driver_cell = net->driver.cell;
if (!driver_cell)
return 0;
if (driver_cell->bel == BelId())
return 0;
driver_gb = ctx->getBelGlobalBuf(driver_cell->bel);
driver_loc = ctx->getBelLocation(driver_cell->bel);
bool driver_gb = ctx->getBelGlobalBuf(driver_cell->bel);
if (driver_gb)
return 0;
IdString clock_port;
bool timing_driven = ctx->timing_driven && type == MetricType::COST && ctx->getPortTimingClass(driver_cell, net->driver.port, clock_port) != TMG_IGNORE;
delay_t negative_slack = 0;
delay_t worst_slack = std::numeric_limits<delay_t>::max();
Loc driver_loc = ctx->getBelLocation(driver_cell->bel);
int xmin = driver_loc.x, xmax = driver_loc.x, ymin = driver_loc.y, ymax = driver_loc.y;
for (auto load : net->users) {
if (load.cell == nullptr)
@ -48,7 +48,7 @@ wirelen_t get_net_metric(const Context *ctx, const NetInfo *net, MetricType type
CellInfo *load_cell = load.cell;
if (load_cell->bel == BelId())
continue;
if (ctx->timing_driven && type == MetricType::COST) {
if (timing_driven) {
delay_t net_delay = ctx->predictDelay(net, load);
auto slack = load.budget - net_delay;
if (slack < 0)
@ -65,7 +65,7 @@ wirelen_t get_net_metric(const Context *ctx, const NetInfo *net, MetricType type
xmax = std::max(xmax, load_loc.x);
ymax = std::max(ymax, load_loc.y);
}
if (ctx->timing_driven && type == MetricType::COST) {
if (timing_driven) {
wirelength = wirelen_t(
(((ymax - ymin) + (xmax - xmin)) * std::min(5.0, (1.0 + std::exp(-ctx->getDelayNS(worst_slack) / 5)))));
} else {