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Factor out the test for unresolvable external functions into

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isUnresolvableFunc() (I thought I needed this externally.
I don't, but it's still nicer this way.)

llvm-svn: 7186
This commit is contained in:
Vikram S. Adve 2003-07-16 21:25:17 +00:00
parent 8c9be85d5d
commit 0ce80bfa82
1 changed files with 19 additions and 14 deletions
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33
lib/Analysis/DataStructure/DSCallSiteIterator.h
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@ -28,13 +28,27 @@ struct DSCallSiteIterator {
CallSite = FCs->size(); CallSiteEntry = 0;
}
static bool isVAHackFn(const Function *F) {
return F->getName() == "printf" || F->getName() == "sscanf" ||
F->getName() == "fprintf" || F->getName() == "open" ||
F->getName() == "sprintf" || F->getName() == "fputs" ||
F->getName() == "fscanf" || F->getName() == "bzero" ||
F->getName() == "memset";
}
// isUnresolvableFunction - Return true if this is an unresolvable
// external function. A direct or indirect call to this cannot be resolved.
//
static bool isUnresolvableFunc(const Function* callee) {
return callee->isExternal() && !isVAHackFn(callee);
}
void advanceToValidCallee() {
while (CallSite < FCs->size()) {
if ((*FCs)[CallSite].isDirectCall()) {
if (CallSiteEntry == 0 && // direct call only has one target...
(!(*FCs)[CallSite].getCalleeFunc()->isExternal() ||
isVAHackFn((*FCs)[CallSite].getCalleeFunc()))) // If not external
return;
! DSCallSite::isUnresolvableFunc((*FCs)[CallSite].getCalleeFunc()))
return; // and not an unresolvable external func
} else {
DSNode *CalleeNode = (*FCs)[CallSite].getCalleeNode();
if (CallSiteEntry || isCompleteNode(CalleeNode)) {
@ -50,14 +64,6 @@ struct DSCallSiteIterator {
++CallSite;
}
}
static bool isVAHackFn(const Function *F) {
return F->getName() == "printf" || F->getName() == "sscanf" ||
F->getName() == "fprintf" || F->getName() == "open" ||
F->getName() == "sprintf" || F->getName() == "fputs" ||
F->getName() == "fscanf" || F->getName() == "bzero" ||
F->getName() == "memset";
}
// isCompleteNode - Return true if we know all of the targets of this node,
// and if the call sites are not external.
@ -66,9 +72,8 @@ struct DSCallSiteIterator {
if (N->isIncomplete()) return false;
const std::vector<GlobalValue*> &Callees = N->getGlobals();
for (unsigned i = 0, e = Callees.size(); i != e; ++i)
if (Callees[i]->isExternal())
if (!isVAHackFn(cast<Function>(Callees[i])))
return false; // External function found...
if (isUnresolvableFunc(cast<Function>(Callees[i])))
return false; // Unresolvable external function found...
return true; // otherwise ok
}