Give the MCStreamer class hierarchy LLVM RTTI facilities for use with
isa<> and dyn_cast<>. In several places, code is already hacking around
the absence of this, and there seem to be several interfaces that might
be lifted and/or devirtualized using this.
This change was based on a discussion with Jim Grosbach about how best
to handle testing for specific MCStreamer subclasses. He said that this
was the correct end state, and everything else was too hacky so
I decided to just make it so.
No functionality should be changed here, this is just threading the kind
through all the constructors and setting up the classof overloads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174113 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCNullStreamer.cpp b/lib/MC/MCNullStreamer.cpp
index 3eee5ca..89f74c1 100644
--- a/lib/MC/MCNullStreamer.cpp
+++ b/lib/MC/MCNullStreamer.cpp
@@ -19,7 +19,7 @@
class MCNullStreamer : public MCStreamer {
public:
- MCNullStreamer(MCContext &Context) : MCStreamer(Context) {}
+ MCNullStreamer(MCContext &Context) : MCStreamer(SK_NullStreamer, Context) {}
/// @name MCStreamer Interface
/// @{
@@ -109,6 +109,11 @@
}
/// @}
+
+ static bool classof(const MCStreamer *S) {
+ return S->getKind() == SK_NullStreamer;
+ }
+
};
}