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CDC: 'posedge a or posedge b or edge a' should optimize to 'edge a or posedge b'

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This commit is contained in:
Wilson Snyder
2010-01-14 14:17:11 -05:00
parent d1cb3b0d15
commit 43e1b27d16
2 changed files with 5 additions and 3 deletions
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src/V3Const.cpp
+4 -2
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@@ -1167,8 +1167,6 @@ private:
const AstSenItem* ritemp = rhsp->castSenItem();
if (litemp && ritemp) {
// Looks visually better if we keep sorted by name
if (litemp->edgeType() < ritemp->edgeType()) return true;
if (litemp->edgeType() > ritemp->edgeType()) return false;
if (!litemp->varrefp() && ritemp->varrefp()) return true;
if ( litemp->varrefp() && !ritemp->varrefp()) return false;
if (litemp->varrefp() && ritemp->varrefp()) {
@@ -1178,6 +1176,10 @@ private:
if (litemp->varrefp()->varScopep() < ritemp->varrefp()->varScopep()) return true;
if (litemp->varrefp()->varScopep() > ritemp->varrefp()->varScopep()) return false;
}
// Sort by edge, AFTER variable, as we want multiple edges for same var adjacent
// note the SenTree optimizer requires this order (more general firsst, less general last)
if (litemp->edgeType() < ritemp->edgeType()) return true;
if (litemp->edgeType() > ritemp->edgeType()) return false;
}
return false;
}