diff options
Diffstat (limited to 'common/place_common.cc')
| -rw-r--r-- | common/place_common.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/common/place_common.cc b/common/place_common.cc index 591985f1..12345a89 100644 --- a/common/place_common.cc +++ b/common/place_common.cc @@ -21,6 +21,7 @@ #include <cmath> #include "log.h" #include "util.h" + NEXTPNR_NAMESPACE_BEGIN // Get the total estimated wirelength for a net @@ -118,12 +119,16 @@ bool place_single_cell(Context *ctx, CellInfo *cell, bool require_legality) if (ctx->getBelType(bel) == targetType && (!require_legality || ctx->isValidBelForCell(cell, bel))) { if (ctx->checkBelAvail(bel)) { wirelen_t wirelen = get_cell_wirelength_at_bel(ctx, cell, bel); + if (wirelen == 0) + wirelen = ctx->rng(100); if (wirelen <= best_wirelen) { best_wirelen = wirelen; best_bel = bel; } } else { wirelen_t wirelen = get_cell_wirelength_at_bel(ctx, cell, bel); + if (wirelen == 0) + wirelen = ctx->rng(100); if (wirelen <= best_ripup_wirelen) { ripup_target = ctx->cells.at(ctx->getBoundBelCell(bel)).get(); if (ripup_target->belStrength < STRENGTH_STRONG) { @@ -135,7 +140,11 @@ bool place_single_cell(Context *ctx, CellInfo *cell, bool require_legality) } } if (best_bel == BelId()) { - if (iters == 0 || ripup_bel == BelId()) { + if (iters == 0) { + log_error("failed to place cell '%s' of type '%s' (ripup iteration limit exceeded)\n", + cell->name.c_str(ctx), cell->type.c_str(ctx)); + } + if (ripup_bel == BelId()) { log_error("failed to place cell '%s' of type '%s'\n", cell->name.c_str(ctx), cell->type.c_str(ctx)); } --iters; |