IndirectCallVisitor.h revision 353358 
1//===-- IndirectCallVisitor.h - indirect call visitor ---------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements defines a visitor class and a helper function that find
10// all indirect call-sites in a function.
11
12#ifndef LLVM_ANALYSIS_INDIRECTCALLVISITOR_H
13#define LLVM_ANALYSIS_INDIRECTCALLVISITOR_H
14
15#include "llvm/IR/InstVisitor.h"
16#include <vector>
17
18namespace llvm {
19// Visitor class that finds all indirect call.
20struct PGOIndirectCallVisitor : public InstVisitor<PGOIndirectCallVisitor> {
21  std::vector<Instruction *> IndirectCalls;
22  PGOIndirectCallVisitor() {}
23
24  void visitCallBase(CallBase &Call) {
25    if (Call.isIndirectCall())
26      IndirectCalls.push_back(&Call);
27  }
28};
29
30// Helper function that finds all indirect call sites.
31inline std::vector<Instruction *> findIndirectCalls(Function &F) {
32  PGOIndirectCallVisitor ICV;
33  ICV.visit(F);
34  return ICV.IndirectCalls;
35}
36} // namespace llvm
37
38#endif
39