Added debug message in ObjCARC when we remove a no-op cast which has only special semantic meaning in the frontend and thus in the optimizer can be deleted.
llvm-svn: 171670
diff --git a/llvm/lib/Transforms/Scalar/ObjCARC.cpp b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
index a17ff50..e68f2ad 100644
--- a/llvm/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2343,6 +2343,8 @@
case IC_NoopCast:
Changed = true;
++NumNoops;
+ DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: Erasing no-op cast:"
+ " " << *Inst << "\n");
EraseInstruction(Inst);
continue;