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Internals: Use runtime type info instead of dynamic_cast for faster graph type checks (#4397)

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This commit is contained in:
Krzysztof Bieganski
2023-08-31 18:00:53 -04:00
committed by GitHub
parent 96ee81fa3f
commit ffbbd438ae
22 changed files with 390 additions and 143 deletions
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src/V3SchedPartition.cpp
+7 -4
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@@ -55,6 +55,7 @@ namespace V3Sched {
namespace {
class SchedSenVertex final : public V3GraphVertex {
VL_RTTI_IMPL(SchedSenVertex, V3GraphVertex)
const AstSenItem* const m_senItemp;
public:
@@ -74,6 +75,7 @@ public:
};
class SchedLogicVertex final : public V3GraphVertex {
VL_RTTI_IMPL(SchedLogicVertex, V3GraphVertex)
AstScope* const m_scopep;
AstSenTree* const m_senTreep;
AstNode* const m_logicp;
@@ -97,6 +99,7 @@ public:
};
class SchedVarVertex final : public V3GraphVertex {
VL_RTTI_IMPL(SchedVarVertex, V3GraphVertex)
const AstVarScope* const m_vscp;
public:
@@ -299,7 +302,7 @@ void colorActiveRegion(const V3Graph& graph) {
// Trace from all SchedSenVertex
for (V3GraphVertex* vtxp = graph.verticesBeginp(); vtxp; vtxp = vtxp->verticesNextp()) {
if (const auto activeEventVtxp = dynamic_cast<SchedSenVertex*>(vtxp)) {
if (const auto activeEventVtxp = vtxp->cast<SchedSenVertex>()) {
queue.push_back(activeEventVtxp);
}
}
@@ -323,9 +326,9 @@ void colorActiveRegion(const V3Graph& graph) {
// If this is a logic vertex, also enqueue all variable vertices that are driven from this
// logic. This will ensure that if a variable is set in the active region, then all
// settings of that variable will be in the active region.
if (dynamic_cast<SchedLogicVertex*>(&vtx)) {
if (vtx.is<SchedLogicVertex>()) {
for (V3GraphEdge* edgep = vtx.outBeginp(); edgep; edgep = edgep->outNextp()) {
UASSERT(dynamic_cast<SchedVarVertex*>(edgep->top()), "Should be var vertex");
UASSERT(edgep->top()->is<SchedVarVertex>(), "Should be var vertex");
queue.push_back(edgep->top());
}
}
@@ -350,7 +353,7 @@ LogicRegions partition(LogicByScope& clockedLogic, LogicByScope& combinationalLo
LogicRegions result;
for (V3GraphVertex* vtxp = graphp->verticesBeginp(); vtxp; vtxp = vtxp->verticesNextp()) {
if (const auto lvtxp = dynamic_cast<SchedLogicVertex*>(vtxp)) {
if (const auto lvtxp = vtxp->cast<SchedLogicVertex>()) {
LogicByScope& lbs = lvtxp->color() ? result.m_act : result.m_nba;
AstNode* const logicp = lvtxp->logicp();
logicp->unlinkFrBack();