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Support clocking blocks (#3674)

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This commit is contained in:
Krzysztof Bieganski
2022-12-23 07:34:49 -05:00
committed by GitHub
parent d64971ba35
commit bb44d4e4f2
58 changed files with 1817 additions and 218 deletions
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src/V3Timing.cpp
+9 -2
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@@ -155,8 +155,8 @@ private:
}
// Transform an assignment with an intra timing control into a timing control with the
// assignment under it
AstNodeStmt* factorOutTimingControl(AstNodeAssign* nodep) const {
AstNodeStmt* stmtp = nodep;
AstNode* factorOutTimingControl(AstNodeAssign* nodep) const {
AstNode* stmtp = nodep;
AstDelay* delayp = getLhsNetDelay(nodep);
FileLine* const flp = nodep->fileline();
AstNode* const controlp = nodep->timingControlp();
@@ -182,6 +182,11 @@ private:
stmtp->replaceWith(eventControlp);
eventControlp->addStmtsp(stmtp);
stmtp = eventControlp;
} else if (auto* const beginp = VN_CAST(controlp, Begin)) {
// Begin from V3AssertPre
stmtp->replaceWith(beginp);
beginp->addStmtsp(stmtp);
stmtp = beginp;
}
return stmtp == nodep ? nullptr : stmtp;
}
@@ -495,6 +500,8 @@ private:
m_procp->user2(true);
}
void visit(AstDelay* nodep) override {
UASSERT_OBJ(!nodep->isCycleDelay(), nodep,
"Cycle delays should have been handled in V3AssertPre");
FileLine* const flp = nodep->fileline();
AstNodeExpr* valuep = V3Const::constifyEdit(nodep->lhsp()->unlinkFrBack());
auto* const constp = VN_CAST(valuep, Const);