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Net decomposing router: hotfix #2828

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Nov 28, 2024
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Net decomposing router: hotfix #2828

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20 changes: 14 additions & 6 deletions vpr/src/route/DecompNetlistRouter.tpp
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Original file line number Diff line number Diff line change
Expand Up @@ -448,11 +448,15 @@ inline bool is_close_to_cutline(RRNodeId inode, Axis cutline_axis, int cutline_p
const auto& device_ctx = g_vpr_ctx.device();
const auto& rr_graph = device_ctx.rr_graph;

vtr::Rect<int> tile_bb = device_ctx.grid.get_tile_bb({rr_graph.node_xlow(inode),
rr_graph.node_ylow(inode),
rr_graph.node_layer(inode)});

/* Cutlines are considered to be at x + 0.5, set a thickness of +1 here by checking for equality */
if (cutline_axis == Axis::X) {
return rr_graph.node_xlow(inode) - thickness <= cutline_pos && rr_graph.node_xhigh(inode) + thickness >= cutline_pos;
return tile_bb.xmin() - thickness <= cutline_pos && tile_bb.xmax() + thickness >= cutline_pos;
} else {
return rr_graph.node_ylow(inode) - thickness <= cutline_pos && rr_graph.node_yhigh(inode) + thickness >= cutline_pos;
return tile_bb.ymin() - thickness <= cutline_pos && tile_bb.ymax() + thickness >= cutline_pos;
}
}

Expand All @@ -461,10 +465,14 @@ inline bool is_close_to_bb(RRNodeId inode, const t_bb& bb, int thickness) {
const auto& device_ctx = g_vpr_ctx.device();
const auto& rr_graph = device_ctx.rr_graph;

int xlow = rr_graph.node_xlow(inode) - thickness;
int ylow = rr_graph.node_ylow(inode) - thickness;
int xhigh = rr_graph.node_xhigh(inode) + thickness;
int yhigh = rr_graph.node_yhigh(inode) + thickness;
vtr::Rect<int> tile_bb = device_ctx.grid.get_tile_bb({rr_graph.node_xlow(inode),
rr_graph.node_ylow(inode),
rr_graph.node_layer(inode)});

int xlow = tile_bb.xmin() - thickness;
int ylow = tile_bb.ymin() - thickness;
int xhigh = tile_bb.xmax() + thickness;
int yhigh = tile_bb.ymax() + thickness;

return (xlow <= bb.xmin && xhigh >= bb.xmin)
|| (ylow <= bb.ymin && yhigh >= bb.ymin)
Expand Down