DFGAbstractInterpreter.h [plain text]
#pragma once
#if ENABLE(DFG_JIT)
#include "DFGAbstractValue.h"
#include "DFGGraph.h"
#include "DFGNode.h"
#include "DFGNodeFlowProjection.h"
#include "DFGPhiChildren.h"
namespace JSC { namespace DFG {
template<typename AbstractStateType>
class AbstractInterpreter {
public:
AbstractInterpreter(Graph&, AbstractStateType&);
~AbstractInterpreter();
ALWAYS_INLINE AbstractValue& forNode(NodeFlowProjection node)
{
return m_state.forNode(node);
}
ALWAYS_INLINE AbstractValue& forNode(Edge edge)
{
return forNode(edge.node());
}
ALWAYS_INLINE void clearForNode(NodeFlowProjection node)
{
m_state.clearForNode(node);
}
ALWAYS_INLINE void clearForNode(Edge edge)
{
clearForNode(edge.node());
}
template<typename... Arguments>
ALWAYS_INLINE void setForNode(NodeFlowProjection node, Arguments&&... arguments)
{
m_state.setForNode(node, std::forward<Arguments>(arguments)...);
}
template<typename... Arguments>
ALWAYS_INLINE void setForNode(Edge edge, Arguments&&... arguments)
{
setForNode(edge.node(), std::forward<Arguments>(arguments)...);
}
template<typename... Arguments>
ALWAYS_INLINE void setTypeForNode(NodeFlowProjection node, Arguments&&... arguments)
{
m_state.setTypeForNode(node, std::forward<Arguments>(arguments)...);
}
template<typename... Arguments>
ALWAYS_INLINE void setTypeForNode(Edge edge, Arguments&&... arguments)
{
setTypeForNode(edge.node(), std::forward<Arguments>(arguments)...);
}
template<typename... Arguments>
ALWAYS_INLINE void setNonCellTypeForNode(NodeFlowProjection node, Arguments&&... arguments)
{
m_state.setNonCellTypeForNode(node, std::forward<Arguments>(arguments)...);
}
template<typename... Arguments>
ALWAYS_INLINE void setNonCellTypeForNode(Edge edge, Arguments&&... arguments)
{
setNonCellTypeForNode(edge.node(), std::forward<Arguments>(arguments)...);
}
ALWAYS_INLINE void makeBytecodeTopForNode(NodeFlowProjection node)
{
m_state.makeBytecodeTopForNode(node);
}
ALWAYS_INLINE void makeBytecodeTopForNode(Edge edge)
{
makeBytecodeTopForNode(edge.node());
}
ALWAYS_INLINE void makeHeapTopForNode(NodeFlowProjection node)
{
m_state.makeHeapTopForNode(node);
}
ALWAYS_INLINE void makeHeapTopForNode(Edge edge)
{
makeHeapTopForNode(edge.node());
}
bool needsTypeCheck(Node* node, SpeculatedType typesPassedThrough)
{
return !forNode(node).isType(typesPassedThrough);
}
bool needsTypeCheck(Edge edge, SpeculatedType typesPassedThrough)
{
return needsTypeCheck(edge.node(), typesPassedThrough);
}
bool needsTypeCheck(Edge edge)
{
return needsTypeCheck(edge, typeFilterFor(edge.useKind()));
}
bool execute(unsigned indexInBlock);
bool execute(Node*);
void startExecuting();
void executeEdges(Node*);
void executeKnownEdgeTypes(Node*);
ALWAYS_INLINE void filterEdgeByUse(Edge& edge)
{
UseKind useKind = edge.useKind();
if (useKind == UntypedUse)
return;
filterByType(edge, typeFilterFor(useKind));
}
bool executeEffects(unsigned indexInBlock);
bool executeEffects(unsigned clobberLimit, Node*);
void dump(PrintStream& out) const;
void dump(PrintStream& out);
template<typename T>
FiltrationResult filter(T node, const RegisteredStructureSet& set, SpeculatedType admittedTypes = SpecNone)
{
return filter(forNode(node), set, admittedTypes);
}
template<typename T>
FiltrationResult filterArrayModes(T node, ArrayModes arrayModes)
{
return filterArrayModes(forNode(node), arrayModes);
}
template<typename T>
FiltrationResult filter(T node, SpeculatedType type)
{
return filter(forNode(node), type);
}
template<typename T>
FiltrationResult filterByValue(T node, FrozenValue value)
{
return filterByValue(forNode(node), value);
}
template<typename T>
FiltrationResult filterClassInfo(T node, const ClassInfo* classInfo)
{
return filterClassInfo(forNode(node), classInfo);
}
FiltrationResult filter(AbstractValue&, const RegisteredStructureSet&, SpeculatedType admittedTypes = SpecNone);
FiltrationResult filterArrayModes(AbstractValue&, ArrayModes);
FiltrationResult filter(AbstractValue&, SpeculatedType);
FiltrationResult filterByValue(AbstractValue&, FrozenValue);
FiltrationResult filterClassInfo(AbstractValue&, const ClassInfo*);
PhiChildren* phiChildren() { return m_phiChildren.get(); }
void filterICStatus(Node*);
private:
void clobberWorld();
void didFoldClobberWorld();
template<typename Functor>
void forAllValues(unsigned indexInBlock, Functor&);
void clobberStructures();
void didFoldClobberStructures();
void observeTransition(unsigned indexInBlock, RegisteredStructure from, RegisteredStructure to);
void observeTransitions(unsigned indexInBlock, const TransitionVector&);
enum BooleanResult {
UnknownBooleanResult,
DefinitelyFalse,
DefinitelyTrue
};
BooleanResult booleanResult(Node*, AbstractValue&);
void setBuiltInConstant(Node* node, FrozenValue value)
{
AbstractValue& abstractValue = forNode(node);
abstractValue.set(m_graph, value, m_state.structureClobberState());
abstractValue.fixTypeForRepresentation(m_graph, node);
}
void setConstant(Node* node, FrozenValue value)
{
setBuiltInConstant(node, value);
m_state.setFoundConstants(true);
}
ALWAYS_INLINE void filterByType(Edge& edge, SpeculatedType type);
void verifyEdge(Node*, Edge);
void verifyEdges(Node*);
void executeDoubleUnaryOpEffects(Node*, double(*equivalentFunction)(double));
CodeBlock* m_codeBlock;
Graph& m_graph;
VM& m_vm;
AbstractStateType& m_state;
std::unique_ptr<PhiChildren> m_phiChildren;
};
} }
#endif // ENABLE(DFG_JIT)