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Cache the results of dependsOnInvoke()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37622 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -103,6 +103,7 @@ namespace {
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std::map<BasicBlock*, std::set<Value*, ExprLT> > availableOut;
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std::map<BasicBlock*, std::set<Value*, ExprLT> > anticipatedIn;
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std::map<User*, bool> invokeDep;
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesCFG();
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@ -136,6 +137,8 @@ namespace {
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void cleanup();
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void elimination();
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bool dependsOnInvoke(Value* V);
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};
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char GVNPRE::ID = 0;
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@ -285,11 +288,15 @@ void GVNPRE::phi_translate_set(std::set<Value*, ExprLT>& anticIn,
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}
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}
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bool dependsOnInvoke(Value* V) {
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bool GVNPRE::dependsOnInvoke(Value* V) {
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if (!isa<User>(V))
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return false;
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User* U = cast<User>(V);
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std::map<User*, bool>::iterator I = invokeDep.find(U);
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if (I != invokeDep.end())
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return I->second;
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std::vector<Value*> worklist(U->op_begin(), U->op_end());
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std::set<Value*> visited;
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@ -304,10 +311,16 @@ bool dependsOnInvoke(Value* V) {
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return true;
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User* curr = cast<User>(current);
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std::map<User*, bool>::iterator CI = invokeDep.find(curr);
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if (CI != invokeDep.end()) {
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if (CI->second)
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return true;
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} else {
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for (unsigned i = 0; i < curr->getNumOperands(); ++i)
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if (visited.find(curr->getOperand(i)) == visited.end())
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worklist.push_back(curr->getOperand(i));
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}
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}
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return false;
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}
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@ -593,6 +606,7 @@ bool GVNPRE::runOnFunction(Function &F) {
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createdExpressions.clear();
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availableOut.clear();
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anticipatedIn.clear();
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invokeDep.clear();
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std::map<BasicBlock*, std::set<Value*, ExprLT> > generatedExpressions;
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std::map<BasicBlock*, std::set<PHINode*> > generatedPhis;
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