コード例 #1
0
ファイル: V3Split.cpp プロジェクト: jeras/verilator
    void processBlock(AstNode* nodep) {
	if (!nodep) return;	// Empty lists are ignorable
	// Pass the first node in a list of block items, we'll process them
	// Check there's >= 2 sub statements, else nothing to analyze
	// Save recursion state
	AstNode* firstp = nodep;   // We may reorder, and nodep is no longer first.
	void* oldBlockUser3 = nodep->user3p();   // May be overloaded in below loop, save it
	nodep->user3p(NULL);
	if (!nodep->firstAbovep()) nodep->v3fatalSrc("Node passed is in next list; should have processed all list at once");
	// Process it
	if (!nodep->nextp()) {
	    // Just one, so can't reorder.  Just look for more blocks/statements.
            iterate(nodep);
	} else {
	    UINFO(9,"  processBlock "<<nodep<<endl);
	    // Process block and followers
	    scanBlock(nodep);
	    if (m_noReorderWhy != "") {  // Jump or something nasty
		UINFO(9,"  NoReorderBlock because "<<m_noReorderWhy<<endl);
	    } else {
		// Reorder statements in this block
		cleanupBlockGraph(nodep);
		reorderBlock(nodep);
		// Delete old vertexes and edges only applying to this block
		while (firstp->backp()->nextp()==firstp) firstp = firstp->backp();  // Walk back to first in list
		for (AstNode* nextp=firstp; nextp; nextp=nextp->nextp()) {
		    SplitLogicVertex* vvertexp = (SplitLogicVertex*)nextp->user3p();
		    vvertexp->unlinkDelete(&m_graph);
		}
	    }
	}
	// Again, nodep may no longer be first.
	firstp->user3p(oldBlockUser3);
    }
コード例 #2
0
ファイル: V3Gate.cpp プロジェクト: RCSL-HKUST/heterosim
    AstNodeAssign* hashAndFindDupe(AstNodeAssign* assignp, AstNode* extra1p, AstNode* extra2p) {
	AstNode *rhsp = assignp->rhsp();
	rhsp->user2p(assignp);
	rhsp->user3p(extra1p);
	rhsp->user5p(extra2p);

	hash(extra1p);
	hash(extra2p);

	V3Hashed::iterator inserted = m_hashed.hashAndInsert(rhsp);
	V3Hashed::iterator dupit = m_hashed.findDuplicate(rhsp, this);
	// Even though rhsp was just inserted, V3Hashed::findDuplicate doesn't
	// return anything in the hash that has the same pointer (V3Hashed.cpp::findDuplicate)
	// So dupit is either a different, duplicate rhsp, or the end of the hash.
	if (dupit != m_hashed.end()) {
	    m_hashed.erase(inserted);
	    return m_hashed.iteratorNodep(dupit)->user2p()->castNode()->castNodeAssign();
	}
	return NULL;
    }