[memprof] Migrate away from PointerUnion::is (NFC) (#122622)

Note that PointerUnion::is have been soft deprecated in
PointerUnion.h:

  // FIXME: Replace the uses of is(), get() and dyn_cast() with
  //        isa<T>, cast<T> and the llvm::dyn_cast<T>

In this patch, I'm calling call().getBase() for an instance of
PointerUnion.  call() alone would return an instance of IndexCall,
which wraps PointerUnion.  Note that isa<> cannot directly accept an
instance of IndexCall, at least without defining CastInfo.

I'm not touching PointerUnion::dyn_cast for now because it's a bit
complicated; we could blindly migrate it to dyn_cast_if_present, but
we should probably use dyn_cast when the operand is known to be
non-null.

0 files changed, 0 insertions, 0 deletions