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//===-- IndirectCallSiteVisitor.h - indirect call-sites visitor -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements defines a visitor class and a helper function that find
// all indirect call-sites in a function.
#include "llvm/IR/InstVisitor.h"
#include <vector>
namespace llvm {
// Visitor class that finds all indirect call sites.
struct PGOIndirectCallSiteVisitor
: public InstVisitor<PGOIndirectCallSiteVisitor> {
std::vector<Instruction *> IndirectCallInsts;
PGOIndirectCallSiteVisitor() {}
void visitCallSite(CallSite CS) {
if (CS.getCalledFunction() || !CS.getCalledValue())
return;
Instruction *I = CS.getInstruction();
if (CallInst *CI = dyn_cast<CallInst>(I)) {
if (CI->isInlineAsm())
return;
}
if (isa<Constant>(CS.getCalledValue()))
return;
IndirectCallInsts.push_back(I);
}
};
// Helper function that finds all indirect call sites.
static inline std::vector<Instruction *> findIndirectCallSites(Function &F) {
PGOIndirectCallSiteVisitor ICV;
ICV.visit(F);
return ICV.IndirectCallInsts;
}
}
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