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Moving missing empty check into initial placement loop.

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Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
This commit is contained in:
Keith Rothman 2021-02-01 07:26:54 -08:00
parent 9089ee2d16
commit 1deab29b05
1 changed files with 14 additions and 5 deletions
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19
common/placer_heap.cc
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@ -523,20 +523,29 @@ class HeAPPlacer
bool placed = false;
int attempt_count = 0;
while (!placed) {
if (!available_bels.count(ci->type) || available_bels.at(ci->type).empty()) {
log_error("Unable to place cell '%s', no BELs remaining to implement cell type '%s'\n",
ci->name.c_str(ctx),
ci->type.c_str(ctx));
}
++attempt_count;
if (attempt_count > 25000) {
log_error("Unable to find a placement location for cell '%s'\n", ci->name.c_str(ctx));
}
// Make sure this cell type is in the available BEL map at
// all.
if (!available_bels.count(ci->type)) {
log_error("Unable to place cell '%s', no BELs remaining to implement cell type '%s'\n",
ci->name.c_str(ctx),
ci->type.c_str(ctx));
}
// Find an unused BEL from bels_for_cell_type.
auto &bels_for_cell_type = available_bels.at(ci->type);
BelId bel;
while(true) {
if (bels_for_cell_type.empty()) {
log_error("Unable to place cell '%s', no BELs remaining to implement cell type '%s'\n",
ci->name.c_str(ctx),
ci->type.c_str(ctx));
}
BelId candidate_bel = bels_for_cell_type.back();
bels_for_cell_type.pop_back();
if(bels_used.count(candidate_bel)) {