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* Add a nice utility method to DSNode
* Export interface to tell whether an alloc node represent a malloc or alloca * Add the concept of a "critical" shadow node git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2000 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -128,6 +128,10 @@ public:
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void removeReferrer(PointerValSet *PVS);
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const std::vector<PointerValSet*> &getReferrers() const { return Referrers; }
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// removeAllIncomingEdges - Erase all edges in the graph that point to
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// this node
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void removeAllIncomingEdges();
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void addPointer(Value *V) { Pointers.push_back(V); }
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const std::vector<Value*> &getPointers() const { return Pointers; }
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@ -170,6 +174,9 @@ public:
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virtual std::string getCaption() const;
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bool isAllocaNode() const;
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bool isMallocNode() const { return !isAllocaNode(); }
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// Support type inquiry through isa, cast, and dyn_cast...
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static bool classof(const NewDSNode *) { return true; }
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static bool classof(const DSNode *N) { return N->NodeType == NewNode; }
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@ -256,14 +263,22 @@ private:
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// to. When functions are integrated into each other, shadow nodes are
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// resolved.
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//
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// Shadow nodes may be marked as "critical" nodes when they are created. This
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// mark indicates that the node is the result of a function call, the value
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// pointed to by an incoming argument, or the value pointed to by a global
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// variable [fixme todo]. Since it is not possible to know what these nodes
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// point to, given just the current context, they are marked "Critical" to avoid
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// having the shadow node merger eliminate them.
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//
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class ShadowDSNode : public DSNode {
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friend class FunctionDSGraph;
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DSNode *Parent;
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Module *Mod;
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ShadowDSNode *ShadowParent; // Nonnull if this is a synthesized node...
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std::vector<std::pair<const Type *, ShadowDSNode *> > SynthNodes;
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bool CriticalNode;
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public:
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ShadowDSNode(DSNode *Parent, Module *M);
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ShadowDSNode(DSNode *Parent, Module *M, bool Critical = false);
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virtual std::string getCaption() const;
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// synthesizeNode - Create a new shadow node that is to be linked into this
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@ -271,6 +286,9 @@ public:
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//
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ShadowDSNode *synthesizeNode(const Type *Ty, FunctionRepBuilder *Rep);
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bool isCriticalNode() const { return CriticalNode; }
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void resetCriticalMark() { CriticalNode = false; }
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// Support type inquiry through isa, cast, and dyn_cast...
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static bool classof(const ShadowDSNode *) { return true; }
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static bool classof(const DSNode *N) { return N->NodeType == ShadowNode; }
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@ -284,7 +302,7 @@ protected:
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if (ShadowParent)
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return new ShadowDSNode(getType(), Mod, ShadowParent);
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else
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return new ShadowDSNode(Parent, Mod);
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return new ShadowDSNode(Parent, Mod, CriticalNode);
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}
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};
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@ -128,6 +128,10 @@ public:
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void removeReferrer(PointerValSet *PVS);
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const std::vector<PointerValSet*> &getReferrers() const { return Referrers; }
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// removeAllIncomingEdges - Erase all edges in the graph that point to
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// this node
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void removeAllIncomingEdges();
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void addPointer(Value *V) { Pointers.push_back(V); }
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const std::vector<Value*> &getPointers() const { return Pointers; }
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@ -170,6 +174,9 @@ public:
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virtual std::string getCaption() const;
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bool isAllocaNode() const;
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bool isMallocNode() const { return !isAllocaNode(); }
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// Support type inquiry through isa, cast, and dyn_cast...
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static bool classof(const NewDSNode *) { return true; }
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static bool classof(const DSNode *N) { return N->NodeType == NewNode; }
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@ -256,14 +263,22 @@ private:
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// to. When functions are integrated into each other, shadow nodes are
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// resolved.
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//
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// Shadow nodes may be marked as "critical" nodes when they are created. This
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// mark indicates that the node is the result of a function call, the value
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// pointed to by an incoming argument, or the value pointed to by a global
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// variable [fixme todo]. Since it is not possible to know what these nodes
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// point to, given just the current context, they are marked "Critical" to avoid
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// having the shadow node merger eliminate them.
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//
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class ShadowDSNode : public DSNode {
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friend class FunctionDSGraph;
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DSNode *Parent;
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Module *Mod;
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ShadowDSNode *ShadowParent; // Nonnull if this is a synthesized node...
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std::vector<std::pair<const Type *, ShadowDSNode *> > SynthNodes;
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bool CriticalNode;
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public:
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ShadowDSNode(DSNode *Parent, Module *M);
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ShadowDSNode(DSNode *Parent, Module *M, bool Critical = false);
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virtual std::string getCaption() const;
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// synthesizeNode - Create a new shadow node that is to be linked into this
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@ -271,6 +286,9 @@ public:
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//
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ShadowDSNode *synthesizeNode(const Type *Ty, FunctionRepBuilder *Rep);
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bool isCriticalNode() const { return CriticalNode; }
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void resetCriticalMark() { CriticalNode = false; }
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// Support type inquiry through isa, cast, and dyn_cast...
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static bool classof(const ShadowDSNode *) { return true; }
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static bool classof(const DSNode *N) { return N->NodeType == ShadowNode; }
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@ -284,7 +302,7 @@ protected:
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if (ShadowParent)
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return new ShadowDSNode(getType(), Mod, ShadowParent);
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else
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return new ShadowDSNode(Parent, Mod);
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return new ShadowDSNode(Parent, Mod, CriticalNode);
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}
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};
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