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Be a good little compiler and handle direct calls efficiently, even if there

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are beastly ConstantPointerRefs in the way...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11883 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-26 22:07:22 +00:00
parent 71e353ed35
commit cb582406dd
1 changed files with 13 additions and 10 deletions
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23
lib/Analysis/DataStructure/Local.cpp
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@ -465,8 +465,12 @@ void GraphBuilder::visitInvokeInst(InvokeInst &II) {
}
void GraphBuilder::visitCallSite(CallSite CS) {
Value *Callee = CS.getCalledValue();
if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Callee))
Callee = CPR->getValue();
// Special case handling of certain libc allocation functions here.
if (Function *F = CS.getCalledFunction())
if (Function *F = dyn_cast<Function>(Callee))
if (F->isExternal())
switch (F->getIntrinsicID()) {
case Intrinsic::memmove:
@ -809,12 +813,11 @@ void GraphBuilder::visitCallSite(CallSite CS) {
if (isPointerType(I->getType()))
RetVal = getValueDest(*I);
DSNode *Callee = 0;
if (DisableDirectCallOpt || !isa<Function>(CS.getCalledValue())) {
Callee = getValueDest(*CS.getCalledValue()).getNode();
if (Callee == 0) {
std::cerr << "WARNING: Program is calling through a null pointer?\n"
<< *I;
DSNode *CalleeNode = 0;
if (DisableDirectCallOpt || !isa<Function>(Callee)) {
CalleeNode = getValueDest(*Callee).getNode();
if (CalleeNode == 0) {
std::cerr << "WARNING: Program is calling through a null pointer?\n"<< *I;
return; // Calling a null pointer?
}
}
@ -828,10 +831,10 @@ void GraphBuilder::visitCallSite(CallSite CS) {
Args.push_back(getValueDest(**I));
// Add a new function call entry...
if (Callee)
FunctionCalls->push_back(DSCallSite(CS, RetVal, Callee, Args));
if (CalleeNode)
FunctionCalls->push_back(DSCallSite(CS, RetVal, CalleeNode, Args));
else
FunctionCalls->push_back(DSCallSite(CS, RetVal, CS.getCalledFunction(),
FunctionCalls->push_back(DSCallSite(CS, RetVal, cast<Function>(Callee),
Args));
}