Mark an unreachable region of code with llvm_unreachable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157197 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp
index c4ab42d263f28ed3bedef85a278381c16a0e2257..15109b5bcea834d7d0258117bb7ff7e45c2f8148 100644 (file)
--- a/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/lib/Transforms/Scalar/ObjCARC.cpp
@@ -3496,7 +3496,7 @@ void ObjCARCOpt::OptimizeWeakCalls(Function &F) {
           // No return value.
           break;
         default:
-          break;
+          llvm_unreachable("alloca really is used!");
         }
         UserInst->eraseFromParent();
       }