Objective-C [IRGen]. Generator a tail call to objc_getProperty() in

synthesized getters for performance improvement. 
// rdar://15884113

llvm-svn: 200430

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGObjC.cpp b/clang/lib/CodeGen/CGObjC.cpp
index 9c23ba4b1ee..ae1349fbd8a 100644
--- a/clang/lib/CodeGen/CGObjC.cpp
+++ b/clang/lib/CodeGen/CGObjC.cpp
@@ -892,10 +892,14 @@ CodeGenFunction::generateObjCGetterBody(const ObjCImplementationDecl *classImpl,
 
     // FIXME: We shouldn't need to get the function info here, the
     // runtime already should have computed it to build the function.
+    llvm::Instruction *CallInstruction;
     RValue RV = EmitCall(getTypes().arrangeFreeFunctionCall(propType, args,
                                                        FunctionType::ExtInfo(),
                                                             RequiredArgs::All),
-                         getPropertyFn, ReturnValueSlot(), args);
+                         getPropertyFn, ReturnValueSlot(), args, 0,
+                         &CallInstruction);
+    if (llvm::CallInst *call = dyn_cast<llvm::CallInst>(CallInstruction))
+      call->setTailCall();
 
     // We need to fix the type here. Ivars with copy & retain are
     // always objects so we don't need to worry about complex or