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| author | Eddie Hung <eddie@fpgeh.com> | 2019-10-02 21:26:26 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-10-02 21:26:26 -0700 |
| commit | e9645c7fa7fc349afad103ff8736699bb4dc0412 (patch) | |
| tree | 427265dac80735a11f28d2f9a01594907922989d /passes/pmgen | |
| parent | e4bd5aaebf7e329236b10c93eac9ad113231f00e (diff) | |
| download | yosys-e9645c7fa7fc349afad103ff8736699bb4dc0412.tar.gz yosys-e9645c7fa7fc349afad103ff8736699bb4dc0412.tar.bz2 yosys-e9645c7fa7fc349afad103ff8736699bb4dc0412.zip | |
Fix broken CI, check reset even for constants, trim rstmux
Diffstat (limited to 'passes/pmgen')
| -rw-r--r-- | passes/pmgen/peepopt_dffmux.pmg | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/passes/pmgen/peepopt_dffmux.pmg b/passes/pmgen/peepopt_dffmux.pmg index 2ec504cb4..bfd155c58 100644 --- a/passes/pmgen/peepopt_dffmux.pmg +++ b/passes/pmgen/peepopt_dffmux.pmg @@ -74,9 +74,9 @@ code return lhs == rhs; }; - int i = width; - while (i > 2) { - i--; + int i = width-1; + while (i > 1) { + log_dump(i, D[i], D[i-1], rst[i], rst[i-1], init[i], init[i-1]); if (D[i] != D[i-1]) break; if (!cmpx(rst[i], rst[i-1])) @@ -86,26 +86,36 @@ code if (!cmpx(rst[i], init[i])) break; module->connect(Q[i], Q[i-1]); - did_something = true; + i--; } if (i < width-1) { + did_something = true; if (cemux) { SigSpec &ceA = cemux->connections_.at(\A); SigSpec &ceB = cemux->connections_.at(\B); SigSpec &ceY = cemux->connections_.at(\Y); - ceA.remove(i, width-i); - ceB.remove(i, width-i); - ceY.remove(i, width-i); + ceA.remove(i, width-1-i); + ceB.remove(i, width-1-i); + ceY.remove(i, width-1-i); cemux->fixup_parameters(); } - dffD.remove(i, width-i); - dffQ.remove(i, width-i); + if (rstmux) { + SigSpec &rstA = rstmux->connections_.at(\A); + SigSpec &rstB = rstmux->connections_.at(\B); + SigSpec &rstY = rstmux->connections_.at(\Y); + rstA.remove(i, width-1-i); + rstB.remove(i, width-1-i); + rstY.remove(i, width-1-i); + rstmux->fixup_parameters(); + } + dffD.remove(i, width-1-i); + dffQ.remove(i, width-1-i); dff->fixup_parameters(); - log("dffcemux pattern in %s: dff=%s, cemux=%s; removed top %d bits.\n", log_id(module), log_id(dff), log_id(cemux), width-i); - accept; + log("dffcemux pattern in %s: dff=%s, cemux=%s, rstmux=%s; removed top %d bits.\n", log_id(module), log_id(dff), log_id(cemux, "n/a"), log_id(rstmux, "n/a"), width-1-i); + width = i+1; } - else if (cemux) { + if (cemux) { SigSpec &ceA = cemux->connections_.at(\A); SigSpec &ceB = cemux->connections_.at(\B); SigSpec &ceY = cemux->connections_.at(\Y); @@ -114,15 +124,7 @@ code for (int i = width-1; i >= 0; i--) { if (D[i].wire) continue; - Wire *w = Q[i].wire; - auto it = w->attributes.find(\init); - State init; - if (it != w->attributes.end()) - init = it->second[Q[i].offset]; - else - init = State::Sx; - - if (init == State::Sx || init == D[i].data) { + if (cmpx(rst[i], D[i].data) && cmpx(init[i], D[i].data)) { count++; module->connect(Q[i], D[i]); ceA.remove(i); @@ -136,9 +138,10 @@ code did_something = true; cemux->fixup_parameters(); dff->fixup_parameters(); - log("dffcemux pattern in %s: dff=%s, cemux=%s; removed %d constant bits.\n", log_id(module), log_id(dff), log_id(cemux), count); + log("dffcemux pattern in %s: dff=%s, cemux=%s, rstmux=%s; removed %d constant bits.\n", log_id(module), log_id(dff), log_id(cemux), log_id(rstmux, "n/a"), count); } + } + if (did_something) accept; - } endcode |