Force clang to produce legacy api for messaging

in for pre-snowleoprd (NeXt runtime). Fixes
radar 7866951

llvm-svn: 101791

clang/lib/CodeGen/CGObjCMac.cpp

@@ -4264,7 +4264,10 @@ void CGObjCNonFragileABIMac::FinishNonFragileABIModule() {
 bool CGObjCNonFragileABIMac::LegacyDispatchedSelector(Selector Sel) {
   if (CGM.getCodeGenOpts().ObjCLegacyDispatch)
     return true;
-
+  /* Leopard */
+  if (CGM.getContext().Target.getTriple().getDarwinMajorNumber() <= 9)
+    return false;
+  
   if (NonLegacyDispatchMethods.empty()) {
     NonLegacyDispatchMethods.insert(GetNullarySelector("alloc"));
     NonLegacyDispatchMethods.insert(GetNullarySelector("class"));

clang/test/CodeGenObjC/legacy-api-leopard-test.m

@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9  -fobjc-nonfragile-abi -emit-llvm -o - %s | FileCheck -check-prefix LP64 %s
+// rdar: // 7866951
+
+@interface NSObject 
+- (id)init;
+@end
+
+@interface ClangTest : NSObject @end
+
+@implementation ClangTest
+- (id)init
+{
+ [super init];
+ return self;
+}
+@end
+
+// CHECK-LP64: objc_msgSendSuper2_fixup_init
+// CHECK-LP64: objc_msgSendSuper2_fixup