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* Nodes now keep track of any global variables in them

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2879 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-07-11 20:32:22 +00:00
parent c314ac49d7
commit f9ae4c5cb6
1 changed files with 15 additions and 0 deletions
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15
lib/Analysis/DataStructure/DataStructure.cpp
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@ -37,6 +37,16 @@ void DSNode::removeReferrer(DSNodeHandle *H) {
Referrers.erase(I.base()-1); Referrers.erase(I.base()-1);
} }
// addGlobal - Add an entry for a global value to the Globals list. This also
// marks the node with the 'G' flag if it does not already have it.
//
void DSNode::addGlobal(GlobalValue *GV) {
assert(GV->getType()->getElementType() == Ty);
Globals.push_back(GV);
NodeType |= GlobalNode;
}
// addEdgeTo - Add an edge from the current node to the specified node. This // addEdgeTo - Add an edge from the current node to the specified node. This
// can cause merging of nodes in the graph. // can cause merging of nodes in the graph.
// //
@ -74,8 +84,13 @@ void DSNode::mergeWith(DSNode *N) {
N->Links[i] = 0; // Reduce unneccesary edges in graph. N is dead N->Links[i] = 0; // Reduce unneccesary edges in graph. N is dead
} }
// Merge the node types
NodeType |= N->NodeType; NodeType |= N->NodeType;
N->NodeType = 0; // N is now a dead node. N->NodeType = 0; // N is now a dead node.
// Merge the globals list...
Globals.insert(Globals.end(), N->Globals.begin(), N->Globals.end());
N->Globals.clear();
} }
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//