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Add comments, allow DSNode "copy ctor" to ignore outgoing links, add more 

structured access to the globals list, add a couple helper methods.

llvm-svn: 10982
This commit is contained in:
Chris Lattner 2004-01-27 21:49:25 +00:00
parent 748b56f76b
commit e11e9b9e15
1 changed files with 20 additions and 3 deletions
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23
llvm/include/llvm/Analysis/DSNode.h
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@ -97,9 +97,16 @@ public:
private: private:
unsigned short NodeType; unsigned short NodeType;
public: public:
/// DSNode ctor - Create a node of the specified type, inserting it into the
/// specified graph.
DSNode(const Type *T, DSGraph *G); DSNode(const Type *T, DSGraph *G);
DSNode(const DSNode &, DSGraph *G);
/// DSNode "copy ctor" - Copy the specified node, inserting it into the
/// specified graph. If NullLinks is true, then null out all of the links,
/// but keep the same number of them. This can be used for efficiency if the
/// links are just going to be clobbered anyway.
DSNode(const DSNode &, DSGraph *G, bool NullLinks = false);
~DSNode() { ~DSNode() {
dropAllReferences(); dropAllReferences();
@ -241,14 +248,24 @@ public:
/// also marks the node with the 'G' flag if it does not already have it. /// also marks the node with the 'G' flag if it does not already have it.
/// ///
void addGlobal(GlobalValue *GV); void addGlobal(GlobalValue *GV);
void mergeGlobals(const std::vector<GlobalValue*> &RHS);
const std::vector<GlobalValue*> &getGlobals() const { return Globals; } const std::vector<GlobalValue*> &getGlobals() const { return Globals; }
typedef std::vector<GlobalValue*>::const_iterator global_iterator;
global_iterator global_begin() const { return Globals.begin(); }
global_iterator global_end() const { return Globals.end(); }
/// maskNodeTypes - Apply a mask to the node types bitfield. /// maskNodeTypes - Apply a mask to the node types bitfield.
/// ///
void maskNodeTypes(unsigned Mask) { void maskNodeTypes(unsigned Mask) {
NodeType &= Mask; NodeType &= Mask;
} }
void mergeNodeFlags(unsigned RHS) {
NodeType |= RHS;
}
/// getNodeFlags - Return all of the flags set on the node. If the DEAD flag /// getNodeFlags - Return all of the flags set on the node. If the DEAD flag
/// is set, hide it from the caller. /// is set, hide it from the caller.
unsigned getNodeFlags() const { return NodeType & ~DEAD; } unsigned getNodeFlags() const { return NodeType & ~DEAD; }
@ -320,7 +337,7 @@ private:
inline DSNode *DSNodeHandle::getNode() const { inline DSNode *DSNodeHandle::getNode() const {
assert((!N || Offset < N->Size || (N->Size == 0 && Offset == 0) || assert((!N || Offset < N->Size || (N->Size == 0 && Offset == 0) ||
!N->ForwardNH.isNull()) && "Node handle offset out of range!"); !N->ForwardNH.isNull()) && "Node handle offset out of range!");
if (!N || N->ForwardNH.isNull()) if (N == 0 || N->ForwardNH.isNull())
return N; return N;
return HandleForwarding(); return HandleForwarding();