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Multdiv fix #35

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Multdiv fix #35

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224d22a
Check that the mux and div are fully connected
Dec 17, 2024
b7f6a76
Check that the mux and div are fully connected
Dec 17, 2024
b1b35f7
Check that the mux and div are fully connected
Dec 17, 2024
75240b5
Check that the mux and div are fully connected
Dec 17, 2024
6b2ee39
Merge branch 'main' into multdiv_fix
Dec 17, 2024
50afc76
Ammended per Yosys suggestions
Dec 17, 2024
5e5413a
Ammended per Yosys suggestions
Dec 17, 2024
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1 change: 1 addition & 0 deletions passes/pmgen/peepopt_muldiv_c.pmg
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ match div
// Check that b_const and c_const is constant
filter b_const.is_fully_const()
filter port(div, \B).is_fully_const()
index <SigSpec> remove_bottom_padding(port(div, \A)) === mul_y
endmatch

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7 changes: 7 additions & 0 deletions passes/pmgen/pmgen.py
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Expand Up @@ -429,6 +429,13 @@ def process_pmgfile(f, filename):
print(" }", file=f)
print("", file=f)

print(" SigSpec remove_bottom_padding(SigSpec sig) {", file=f)
print(" int i = 0;", file=f)
print(" for (; i < sig.size() - 1 && sig[i] == State::S0; i++) {} ", file=f)
print(" return sig.extract(i, sig.size() - i);", file=f)
print(" }", file=f)
print("", file=f)

print(" void blacklist(Cell *cell) {", file=f)
print(" if (cell != nullptr && blacklist_cells.insert(cell).second) {", file=f)
print(" auto ptr = rollback_cache.find(cell);", file=f)
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