[cfe-commits] r61901 - in /cfe/trunk: lib/CodeGen/CodeGenModule.cpp lib/Sema/SemaDeclObjC.cpp test/CodeGenObjC/compatibility-alias.m

[Fariborz Jahanian]

Author: fjahanian
Date: Wed Jan  7 19:10:55 2009
New Revision: 61901

URL: http://llvm.org/viewvc/llvm-project?rev=61901&view=rev
Log:
Objc's compatibility-alias semantics and code
gen issue fix.

Added:
    cfe/trunk/test/CodeGenObjC/compatibility-alias.m
Modified:
    cfe/trunk/lib/CodeGen/CodeGenModule.cpp
    cfe/trunk/lib/Sema/SemaDeclObjC.cpp

Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=61901&r1=61900&r2=61901&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Wed Jan  7 19:10:55 2009
@@ -1065,7 +1065,7 @@
     break;
   }
   case Decl::ObjCCompatibleAlias: 
-    ErrorUnsupported(D, "Objective-C compatible alias");
+    // compatibility-alias is a directive and has no code gen.
     break;
 
   case Decl::LinkageSpec: {

Modified: cfe/trunk/lib/Sema/SemaDeclObjC.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclObjC.cpp?rev=61901&r1=61900&r2=61901&view=diff

==============================================================================
--- cfe/trunk/lib/Sema/SemaDeclObjC.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDeclObjC.cpp Wed Jan  7 19:10:55 2009
@@ -159,6 +159,15 @@
   }
   // Check for class declaration
   Decl *CDeclU = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope);
+  if (const TypedefDecl *TDecl = dyn_cast_or_null<TypedefDecl>(CDeclU)) {
+    QualType T = TDecl->getUnderlyingType();
+    if (T->isObjCInterfaceType()) {
+      if (NamedDecl *IDecl = T->getAsObjCInterfaceType()->getDecl()) {
+        ClassName = IDecl->getIdentifier();
+        CDeclU = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope);
+      }
+    }
+  }
   ObjCInterfaceDecl *CDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDeclU);
   if (CDecl == 0) {
     Diag(ClassLocation, diag::warn_undef_interface) << ClassName;

Added: cfe/trunk/test/CodeGenObjC/compatibility-alias.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenObjC/compatibility-alias.m?rev=61901&view=auto

==============================================================================
--- cfe/trunk/test/CodeGenObjC/compatibility-alias.m (added)
+++ cfe/trunk/test/CodeGenObjC/compatibility-alias.m Wed Jan  7 19:10:55 2009
@@ -0,0 +1,8 @@
+// RUN: clang -emit-llvm -o %t %s
+
+ at interface Int1 @end
+
+typedef Int1 Int1Typedef;
+ at compatibility_alias Int1Alias Int1Typedef;
+
+ at implementation Int1Alias @end