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[Tool] Borrow a quick fix from the VPR pull request https://github.com/verilog-to-routing/vtr-verilog-to-routing/pull/1656/files

This commit is contained in:
tangxifan 2021-02-04 17:30:49 -07:00
parent 224bf6c686
commit 3513966078
1 changed files with 62 additions and 0 deletions
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62
vpr/src/pack/cluster.cpp
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@ -1185,6 +1185,64 @@ static void alloc_and_load_pb_stats(t_pb* pb, const int feasible_block_array_siz
}
/*****************************************/
/**
* * Cleans up a pb after unsuccessful molecule packing
* */
static bool cleanup_pb(t_pb* pb) {
bool can_free = true;
/* Recursively check if there are any children with already assigned atoms */
if (pb->child_pbs != nullptr) {
const t_mode* mode = &pb->pb_graph_node->pb_type->modes[pb->mode];
VTR_ASSERT(mode != nullptr);
/* Check each mode */
for (int i = 0; i < mode->num_pb_type_children; ++i) {
/* Check each child */
if (pb->child_pbs[i] != nullptr) {
for (int j = 0; j < mode->pb_type_children[i].num_pb; ++j) {
t_pb* pb_child = &pb->child_pbs[i][j];
t_pb_type* pb_type = pb_child->pb_graph_node->pb_type;
/* Primitive, check occupancy */
if (pb_type->num_modes == 0) {
if (pb_child->name != nullptr) {
can_free = false;
}
}
/* Non-primitive, recurse */
else {
if (!cleanup_pb(pb_child)) {
can_free = false;
}
}
}
}
}
/* Free if can */
if (can_free) {
for (int i = 0; i < mode->num_pb_type_children; ++i) {
if (pb->child_pbs[i] != nullptr) {
delete[] pb->child_pbs[i];
}
}
delete[] pb->child_pbs;
pb->child_pbs = nullptr;
pb->mode = 0;
if (pb->name) {
free(pb->name);
pb->name = nullptr;
}
}
}
return can_free;
}
/**
* Try pack molecule into current cluster
*/
@ -1364,6 +1422,10 @@ static enum e_block_pack_status try_pack_molecule(t_cluster_placement_stats* clu
revert_place_atom_block(molecule->atom_block_ids[i], router_data, atom_molecules);
}
}
/* Placement failed, clean the pb */
cleanup_pb(pb);
} else {
VTR_LOGV(verbosity > 3, "\t\tPASSED pack molecule\n");
}