Switch assert(0/false) llvm_unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index 45e3481..68177de 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -549,7 +549,7 @@
     return IMD->getClassInterface();
 
   assert(!isa<ObjCProtocolDecl>(getDeclContext()) && "It's a protocol method");
-  assert(false && "unknown method context");
+  llvm_unreachable("unknown method context");
   return 0;
 }
 
@@ -781,7 +781,7 @@
   default:
   case ObjCCategoryImpl:
   case ObjCProtocol:
-    assert(0 && "invalid ivar container!");
+    llvm_unreachable("invalid ivar container!");
     return 0;
 
     // Ivars can only appear in class extension categories.