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Be a good little compiler and handle direct calls efficiently, even if there
are beastly ConstantPointerRefs in the way... llvm-svn: 11883
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@ -465,8 +465,12 @@ void GraphBuilder::visitInvokeInst(InvokeInst &II) {
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}
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void GraphBuilder::visitCallSite(CallSite CS) {
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Value *Callee = CS.getCalledValue();
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if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Callee))
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Callee = CPR->getValue();
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// Special case handling of certain libc allocation functions here.
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if (Function *F = CS.getCalledFunction())
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if (Function *F = dyn_cast<Function>(Callee))
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if (F->isExternal())
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switch (F->getIntrinsicID()) {
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case Intrinsic::memmove:
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@ -809,12 +813,11 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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if (isPointerType(I->getType()))
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RetVal = getValueDest(*I);
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DSNode *Callee = 0;
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if (DisableDirectCallOpt || !isa<Function>(CS.getCalledValue())) {
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Callee = getValueDest(*CS.getCalledValue()).getNode();
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if (Callee == 0) {
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std::cerr << "WARNING: Program is calling through a null pointer?\n"
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<< *I;
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DSNode *CalleeNode = 0;
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if (DisableDirectCallOpt || !isa<Function>(Callee)) {
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CalleeNode = getValueDest(*Callee).getNode();
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if (CalleeNode == 0) {
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std::cerr << "WARNING: Program is calling through a null pointer?\n"<< *I;
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return; // Calling a null pointer?
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}
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}
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@ -828,10 +831,10 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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Args.push_back(getValueDest(**I));
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// Add a new function call entry...
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if (Callee)
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FunctionCalls->push_back(DSCallSite(CS, RetVal, Callee, Args));
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if (CalleeNode)
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FunctionCalls->push_back(DSCallSite(CS, RetVal, CalleeNode, Args));
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else
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FunctionCalls->push_back(DSCallSite(CS, RetVal, CS.getCalledFunction(),
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FunctionCalls->push_back(DSCallSite(CS, RetVal, cast<Function>(Callee),
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Args));
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}
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