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Support SystemVerilog "cover property" statements.

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This commit is contained in:
Wilson Snyder
2008-08-06 12:52:39 -04:00
parent a76ae67a81
commit 500dc2170f
16 changed files with 396 additions and 94 deletions
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src/V3Assert.cpp
+21 -3
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@@ -43,6 +43,7 @@ private:
// STATE
AstModule* m_modp; // Last module
AstBegin* m_beginp; // Last begin
V3Double0 m_statAsCover; // Statistic tracking
V3Double0 m_statAsPsl; // Statistic tracking
V3Double0 m_statAsFull; // Statistic tracking
@@ -100,9 +101,11 @@ private:
return bodysp;
}
void newPslAssertion(AstNode* nodep, AstNode* propp, AstSenTree* sentreep, const string& message) {
void newPslAssertion(AstNode* nodep, AstNode* propp, AstSenTree* sentreep,
AstNode* stmtsp, const string& message) {
propp->unlinkFrBack();
sentreep->unlinkFrBack();
if (stmtsp) stmtsp->unlinkFrBack();
//
AstNode* bodysp = NULL;
bool selfDestruct = false;
@@ -126,6 +129,7 @@ private:
} else {
nodep->v3fatalSrc("Unknown node type");
}
if (stmtsp) bodysp = bodysp->addNext(stmtsp);
AstIf* ifp = new AstIf (nodep->fileline(), propp, bodysp, NULL);
bodysp = ifp;
if (nodep->castPslAssert()) ifp->branchPred(AstBranchPred::UNLIKELY);
@@ -232,12 +236,15 @@ private:
virtual void visit(AstPslCover* nodep, AstNUser*) {
nodep->iterateChildren(*this);
newPslAssertion(nodep, nodep->propp(), nodep->sentreep(), nodep->name()); nodep=NULL;
if (m_beginp && nodep->name() == "") nodep->name(m_beginp->name());
newPslAssertion(nodep, nodep->propp(), nodep->sentreep(),
nodep->stmtsp(), nodep->name()); nodep=NULL;
m_statAsCover++;
}
virtual void visit(AstPslAssert* nodep, AstNUser*) {
nodep->iterateChildren(*this);
newPslAssertion(nodep, nodep->propp(), nodep->sentreep(), nodep->name()); nodep=NULL;
newPslAssertion(nodep, nodep->propp(), nodep->sentreep(),
NULL, nodep->name()); nodep=NULL;
m_statAsPsl++;
}
virtual void visit(AstVAssert* nodep, AstNUser*) {
@@ -253,6 +260,16 @@ private:
// Reset defaults
m_modp = NULL;
}
virtual void visit(AstBegin* nodep, AstNUser*) {
// This code is needed rather than a visitor in V3Begin,
// because V3Assert is called before V3Begin
AstBegin* lastp = m_beginp;
{
m_beginp = nodep;
nodep->iterateChildren(*this);
}
m_beginp = lastp;
}
// VISITORS //========== Temporal Layer
@@ -268,6 +285,7 @@ private:
public:
// CONSTRUCTORS
AssertVisitor(AstNetlist* nodep) {
m_beginp = NULL;
m_modp = NULL;
// Process
AstNode::userClearTree(); // userp() used on entire tree