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Add support for tracking array allocations

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2328 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-04-27 02:28:41 +00:00
parent 2aa51be083
commit ee7eafa054
2 changed files with 13 additions and 2 deletions
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1
lib/Analysis/DataStructure/EliminateNodes.cpp
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@@ -53,6 +53,7 @@ static void DestroyFirstNodeOfPair(DSNode *N1, DSNode *N2) {
assert(RanOnce && "Node on user set but cannot find the use!"); assert(RanOnce && "Node on user set but cannot find the use!");
} }
N1->mergeInto(N2);
N1->removeAllIncomingEdges(); N1->removeAllIncomingEdges();
delete N1; delete N1;
} }

14
lib/Analysis/DataStructure/NodeImpl.cpp
View File

@@ -21,6 +21,12 @@ bool AllocDSNode::isEquivalentTo(DSNode *Node) const {
return false; return false;
} }
void AllocDSNode::mergeInto(DSNode *Node) const {
// Make sure the merged node is variable size if this node is var size
AllocDSNode *N = cast<AllocDSNode>(Node);
N->isVarSize |= isVarSize;
}
bool GlobalDSNode::isEquivalentTo(DSNode *Node) const { bool GlobalDSNode::isEquivalentTo(DSNode *Node) const {
if (GlobalDSNode *G = dyn_cast<GlobalDSNode>(Node)) { if (GlobalDSNode *G = dyn_cast<GlobalDSNode>(Node)) {
if (G->Val != Val) return false; if (G->Val != Val) return false;
@@ -217,8 +223,12 @@ void DSNode::mapNode(map<const DSNode*, DSNode*> &NodeMap, const DSNode *Old) {
(ShadowDSNode*)NodeMap[Old->SynthNodes[i].second])); (ShadowDSNode*)NodeMap[Old->SynthNodes[i].second]));
} }
AllocDSNode::AllocDSNode(AllocationInst *V) AllocDSNode::AllocDSNode(AllocationInst *V, bool isvarsize)
: DSNode(NewNode, V->getType()->getElementType()), Allocation(V) { : DSNode(NewNode, V->getType()->getElementType()), Allocation(V) {
// Is variable size if incoming flag says so, or if allocation is var size
// already.
isVarSize = isvarsize || !isa<Constant>(V->getArraySize());
} }
bool AllocDSNode::isAllocaNode() const { bool AllocDSNode::isAllocaNode() const {
@@ -232,7 +242,7 @@ string AllocDSNode::getCaption() const {
WriteTypeSymbolic(OS, getType(), WriteTypeSymbolic(OS, getType(),
Allocation->getParent()->getParent()->getParent()); Allocation->getParent()->getParent()->getParent());
if (Allocation->isArrayAllocation()) if (isVarSize)
OS << "[ ]"; OS << "[ ]";
return OS.str(); return OS.str();
} }