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Make this work better for constants that aren't necessarily in ANY graph, such as null pointers

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llvm-svn: 8628
This commit is contained in:
Chris Lattner 2003-09-20 16:12:57 +00:00
parent 5af4f73620
commit 6a460d88d3
1 changed files with 15 additions and 4 deletions
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19
lib/Analysis/DataStructure/DataStructureStats.cpp
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@ -33,6 +33,7 @@ namespace {
const DSGraph *TDGraph;
DSNode *getNodeForValue(Value *V);
bool isNodeForValueCollapsed(Value *V);
public:
/// Driver functions to compute the Load/Store Dep. Graph per function.
bool runOnFunction(Function& F);
@ -90,14 +91,24 @@ void DSGraphStats::countCallees(const Function& F) {
DSNode *DSGraphStats::getNodeForValue(Value *V) {
const DSGraph *G = TDGraph;
if (isa<GlobalValue>(V))
if (isa<GlobalValue>(V) || isa<Constant>(V))
G = TDGraph->getGlobalsGraph();
return G->getNodeForValue(V).getNode();
const DSGraph::ScalarMapTy &ScalarMap = G->getScalarMap();
DSGraph::ScalarMapTy::const_iterator I = ScalarMap.find(V);
if (I != ScalarMap.end())
return I->second.getNode();
return 0;
}
bool DSGraphStats::isNodeForValueCollapsed(Value *V) {
if (DSNode *N = getNodeForValue(V))
return N->isNodeCompletelyFolded();
return false;
}
void DSGraphStats::visitLoad(LoadInst &LI) {
if (getNodeForValue(LI.getOperand(0))->isNodeCompletelyFolded()) {
if (isNodeForValueCollapsed(LI.getOperand(0))) {
NumUntypedMemAccesses++;
} else {
NumTypedMemAccesses++;
@ -105,7 +116,7 @@ void DSGraphStats::visitLoad(LoadInst &LI) {
}
void DSGraphStats::visitStore(StoreInst &SI) {
if (getNodeForValue(SI.getOperand(1))->isNodeCompletelyFolded()) {
if (isNodeForValueCollapsed(SI.getOperand(1))) {
NumUntypedMemAccesses++;
} else {
NumTypedMemAccesses++;