Commit Graph

2 Commits

Author SHA1 Message Date
Akira Hatanaka ed14d7adea [Sema] Mark a virtual CXXMethodDecl as used if a call to it can be
devirtualized.

The code to detect devirtualized calls is already in IRGen, so move the
code to lib/AST and make it a shared utility between Sema and IRGen.

This commit fixes a linkage error I was seeing when compiling the
following code:

$ cat test1.cpp
struct Base {
  virtual void operator()() {}
};

template<class T>
struct Derived final : Base {
  void operator()() override {}
};

Derived<int> *d;

int main() {
  if (d)
    (*d)();
  return 0;
}

rdar://problem/33195657

Differential Revision: https://reviews.llvm.org/D34301

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307883 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-13 06:08:27 +00:00
Sunil Srivastava 5fe13167ad Prevent devirtualization of calls to un-instantiated functions.
PR 27895

Differential Revision: https://reviews.llvm.org/D22057


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305862 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-20 22:08:44 +00:00