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Assignment LUT inputs from fastest down

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This commit is contained in:
Eddie Hung 2018-11-29 17:08:05 -08:00
parent 0327fa554a
commit 2fdf937259
1 changed files with 11 additions and 10 deletions
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21
xc7/cells.cc
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@ -259,17 +259,18 @@ std::unique_ptr<CellInfo> create_xc7_cell(Context *ctx, IdString type, std::stri
void lut_to_lc(const Context *ctx, CellInfo *lut, CellInfo *lc, bool no_dff) void lut_to_lc(const Context *ctx, CellInfo *lut, CellInfo *lc, bool no_dff)
{ {
lc->params[ctx->id("INIT")] = lut->params[ctx->id("INIT")]; lc->params[ctx->id("INIT")] = lut->params[ctx->id("INIT")];
replace_port(lut, ctx->id("I0"), lc, id_I1); int i = 6;
if (get_net_or_empty(lut, id_I1))
replace_port(lut, id_I1, lc, id_I2);
if (get_net_or_empty(lut, id_I2))
replace_port(lut, id_I2, lc, id_I3);
if (get_net_or_empty(lut, id_I3))
replace_port(lut, id_I3, lc, id_I4);
if (get_net_or_empty(lut, id_I4))
replace_port(lut, id_I4, lc, id_I5);
if (get_net_or_empty(lut, id_I5)) if (get_net_or_empty(lut, id_I5))
replace_port(lut, id_I5, lc, id_I6); replace_port(lut, id_I5, lc, ctx->id("I" + std::to_string(i--)));
if (get_net_or_empty(lut, id_I4))
replace_port(lut, id_I4, lc, ctx->id("I" + std::to_string(i--)));
if (get_net_or_empty(lut, id_I3))
replace_port(lut, id_I3, lc, ctx->id("I" + std::to_string(i--)));
if (get_net_or_empty(lut, id_I2))
replace_port(lut, id_I2, lc, ctx->id("I" + std::to_string(i--)));
if (get_net_or_empty(lut, id_I1))
replace_port(lut, id_I1, lc, ctx->id("I" + std::to_string(i--)));
replace_port(lut, ctx->id("I0"), lc, ctx->id("I" + std::to_string(i--)));
if (no_dff) { if (no_dff) {
replace_port(lut, id_O, lc, id_O); replace_port(lut, id_O, lc, id_O);
lc->params[ctx->id("DFF_ENABLE")] = "0"; lc->params[ctx->id("DFF_ENABLE")] = "0";