diff options
Diffstat (limited to 'ice40/chains.cc')
| -rw-r--r-- | ice40/chains.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ice40/chains.cc b/ice40/chains.cc index 1b556f65..c8e98900 100644 --- a/ice40/chains.cc +++ b/ice40/chains.cc @@ -32,6 +32,7 @@ NEXTPNR_NAMESPACE_BEGIN class ChainConstrainer { private: + int feedio_lcs = 0; Context *ctx; // Split a carry chain into multiple legal chains std::vector<CellChain> split_carry_chain(CellChain &carryc) @@ -55,6 +56,7 @@ class ChainConstrainer CellInfo *feedin = make_carry_feed_in(cell, cell->ports.at(ctx->id("CIN"))); chains.back().cells.push_back(feedin); tile.push_back(feedin); + ++feedio_lcs; } } tile.push_back(cell); @@ -78,6 +80,7 @@ class ChainConstrainer at_end ? nullptr : *(curr_cell + 1)); chains.back().cells.push_back(passout); tile.push_back(passout); + ++feedio_lcs; } } ++curr_cell; @@ -281,6 +284,7 @@ class ChainConstrainer chain.cells.at(0)->constr_children.push_back(chain.cells.at(i)); } } + log_info(" %4d LCs used to legalise carry chains.\n", feedio_lcs); } public: |