Switch assert(0/false) llvm_unreachable.

llvm-svn: 140367
diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 57f9995f..2fdb965 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1890,7 +1890,7 @@
                                <DependentFunctionTemplateSpecializationInfo*>())
     return TK_DependentFunctionTemplateSpecialization;
 
-  assert(false && "Did we miss a TemplateOrSpecialization type?");
+  llvm_unreachable("Did we miss a TemplateOrSpecialization type?");
   return TK_NonTemplate;
 }
 
@@ -2114,7 +2114,7 @@
         MSInfo->getPointOfInstantiation().isInvalid())
       MSInfo->setPointOfInstantiation(PointOfInstantiation);
   } else
-    assert(false && "Function cannot have a template specialization kind");
+    llvm_unreachable("Function cannot have a template specialization kind");
 }
 
 SourceLocation FunctionDecl::getPointOfInstantiation() const {