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place_sa: Make placement independant of unordered_map ordering

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-06-17 13:24:42 +02:00
parent 1b077320dc
commit 153b800f6a
1 changed files with 8 additions and 4 deletions
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12
common/place_sa.cc
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@ -306,15 +306,19 @@ void place_design_sa(Design *design)
rnd_state rnd;
rnd.state = 1;
std::vector<CellInfo *> autoplaced;
// Place cells randomly initially
// Sort to-place cells for deterministic initial placement
for (auto cell : design->cells) {
CellInfo *ci = cell.second;
if (ci->bel == BelId()) {
place_initial(design, ci, rnd);
autoplaced.push_back(cell.second);
placed_cells++;
}
// log_info("placed %d/%d\n", int(placed_cells), int(total_cells));
}
std::sort(autoplaced.begin(), autoplaced.end(),
[](CellInfo *a, CellInfo *b) { return a->name < b->name; });
// Place cells randomly initially
for (auto cell : autoplaced) {
place_initial(design, cell, rnd);
placed_cells++;
}
// Build up a fast position/type to Bel lookup table
int max_x = 0, max_y = 0;