[OBJC] Add attribute to mark Objective C class as non-lazy
A non-lazy class will be initialized eagerly when the Objective-C runtime is
loaded. This is required for certain system classes which have instances allocated in
non-standard ways, such as the classes for blocks and constant strings.
Adding this attribute is essentially equivalent to providing a trivial
+load method but avoids the (fairly small) load-time overheads associated
with defining and calling such a method.
Differential Revision: https://reviews.llvm.org/D56555
llvm-svn: 353116
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 7eafdcc..bb69070 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -6832,6 +6832,9 @@
case ParsedAttr::AT_ObjCRootClass:
handleSimpleAttribute<ObjCRootClassAttr>(S, D, AL);
break;
+ case ParsedAttr::AT_ObjCNonLazyClass:
+ handleSimpleAttribute<ObjCNonLazyClassAttr>(S, D, AL);
+ break;
case ParsedAttr::AT_ObjCSubclassingRestricted:
handleSimpleAttribute<ObjCSubclassingRestrictedAttr>(S, D, AL);
break;