Compute purity of AstCMethodHard (#4460)
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Ryszard Rozak
GitHub
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commit
b66c4153b1
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@ -600,6 +600,7 @@ public:
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, m_name{name} {
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this->fromp(fromp);
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this->addPinsp(pinsp);
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setPurity();
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}
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ASTGEN_MEMBERS_AstCMethodHard;
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string name() const override VL_MT_STABLE { return m_name; } // * = Var name
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@ -609,11 +610,13 @@ public:
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return (m_name == asamep->m_name);
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}
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bool isPure() const override { return m_pure; }
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void pure(bool flag) { m_pure = flag; }
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int instrCount() const override;
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string emitVerilog() override { V3ERROR_NA_RETURN(""); }
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string emitC() override { V3ERROR_NA_RETURN(""); }
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bool cleanOut() const override { return true; }
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private:
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void setPurity();
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};
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class AstCast final : public AstNodeExpr {
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// Cast to appropriate data type
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@ -2326,6 +2326,74 @@ int AstCMethodHard::instrCount() const {
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}
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return 0;
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}
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void AstCMethodHard::setPurity() {
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static const std::map<std::string, bool> isPureMethod{{"andNot", false},
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{"any", true},
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{"assign", false},
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{"at", true},
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{"atBack", true},
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{"awaitingCurrentTime", true},
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{"clear", false},
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{"clearFired", false},
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{"commit", false},
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{"delay", false},
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{"done", false},
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{"erase", false},
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{"evaluate", false},
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{"evaluation", false},
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{"exists", true},
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{"find", true},
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{"find_first", true},
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{"find_first_index", true},
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{"find_index", true},
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{"find_last", true},
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{"find_last_index", true},
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{"fire", false},
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{"first", false},
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{"init", false},
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{"insert", false},
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{"isFired", true},
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{"isTriggered", true},
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{"join", false},
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{"last", false},
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{"max", true},
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{"min", true},
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{"neq", true},
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{"next", false},
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{"pop", false},
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{"pop_back", false},
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{"pop_front", false},
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{"prev", false},
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{"push", false},
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{"push_back", false},
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{"push_front", false},
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{"r_and", true},
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{"r_or", true},
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{"r_product", true},
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{"r_sum", true},
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{"r_xor", true},
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{"renew", false},
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{"renew_copy", false},
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{"resume", false},
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{"reverse", false},
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{"rsort", false},
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{"set", false},
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{"shuffle", false},
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{"size", true},
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{"slice", true},
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{"sliceBackBack", true},
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{"sliceFrontBack", true},
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{"sort", false},
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{"thisOr", false},
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{"trigger", false},
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{"unique", true},
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{"unique_index", true},
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{"word", true}};
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auto isPureIt = isPureMethod.find(name());
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UASSERT_OBJ(isPureIt != isPureMethod.end(), this, "Unknown purity of method " + name());
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m_pure = isPureIt->second;
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}
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const char* AstCFunc::broken() const {
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BROKEN_RTN((m_scopep && !m_scopep->brokeExists()));
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return nullptr;
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@ -393,7 +393,6 @@ AstSenTree* createTriggerSenTree(AstNetlist* netlistp, AstVarScope* const vscp,
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AstCMethodHard* const callp
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= new AstCMethodHard{flp, vrefp, "word", new AstConst{flp, wordIndex}};
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callp->dtypeSetUInt64();
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callp->pure(true);
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AstNodeExpr* const termp
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= new AstAnd{flp, new AstConst{flp, AstConst::Unsized64{}, 1ULL << bitIndex}, callp};
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AstSenItem* const senItemp = new AstSenItem{flp, VEdgeType::ET_TRUE, termp};
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@ -479,7 +478,6 @@ const TriggerKit createTriggers(AstNetlist* netlistp, AstCFunc* const initFuncp,
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AstCMethodHard* const callp
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= new AstCMethodHard{flp, vrefp, "word", new AstConst{flp, wordIndex}};
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callp->dtypeSetUInt64();
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callp->pure(true);
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AstNodeExpr* const termp
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= new AstAnd{flp, new AstConst{flp, AstConst::Unsized64{}, 1ULL << bitIndex}, callp};
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return termp;
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@ -3107,7 +3107,6 @@ private:
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newp = new AstCMethodHard{nodep->fileline(), nodep->fromp()->unlinkFrBack(), "exists",
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index_exprp->unlinkFrBack()};
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newp->dtypeSetSigned32();
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newp->pure(true);
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} else if (nodep->name() == "delete") { // function void delete([input integer index])
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methodOkArguments(nodep, 0, 1);
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methodCallLValueRecurse(nodep, nodep->fromp(), VAccess::WRITE);
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@ -3192,7 +3191,6 @@ private:
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newp = new AstCMethodHard{nodep->fileline(), nodep->fromp()->unlinkFrBack(), "exists",
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index_exprp->unlinkFrBack()};
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newp->dtypeSetSigned32();
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newp->pure(true);
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} else if (nodep->name() == "delete") { // function void delete([input integer index])
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methodOkArguments(nodep, 0, 1);
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methodCallLValueRecurse(nodep, nodep->fromp(), VAccess::WRITE);
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@ -3657,7 +3655,6 @@ private:
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AstCMethodHard* const callp = new AstCMethodHard{
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nodep->fileline(), nodep->fromp()->unlinkFrBack(), "isTriggered"};
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callp->dtypeSetBit();
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callp->pure(true);
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nodep->replaceWith(callp);
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VL_DO_DANGLING(pushDeletep(nodep), nodep);
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} else {
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