From 30e7864661ffff4ad2c7b542401dbc2172529660 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Mon, 12 Jan 2009 23:27:26 +0000
Subject: [PATCH] Patch to implement code gen for aggrgate-valued property used
 to access a field of its type.

llvm-svn: 62123
---
 clang/lib/CodeGen/CGExpr.cpp                  |  8 ++++++++
 clang/test/CodeGenObjC/property-agrr-getter.m | 17 +++++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 clang/test/CodeGenObjC/property-agrr-getter.m

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 20a7693faf62..2d51efa474ec 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -802,6 +802,14 @@ LValue CodeGenFunction::EmitMemberExpr(const MemberExpr *E) {
       isUnion = true;
     CVRQualifiers = PTy->getPointeeType().getCVRQualifiers();
   }
+  else if (BaseExpr->getStmtClass() == Expr::ObjCPropertyRefExprClass ||
+           BaseExpr->getStmtClass() == Expr::ObjCKVCRefExprClass) {
+    RValue RV = EmitObjCPropertyGet(BaseExpr);
+    BaseValue = RV.getAggregateAddr();
+    if (BaseExpr->getType()->isUnionType())
+      isUnion = true;
+    CVRQualifiers = BaseExpr->getType().getCVRQualifiers();
+  }
   else {
     LValue BaseLV = EmitLValue(BaseExpr);
     if (BaseLV.isObjCIvar())
diff --git a/clang/test/CodeGenObjC/property-agrr-getter.m b/clang/test/CodeGenObjC/property-agrr-getter.m
new file mode 100644
index 000000000000..903dcc7e9700
--- /dev/null
+++ b/clang/test/CodeGenObjC/property-agrr-getter.m
@@ -0,0 +1,17 @@
+// RUN: clang -emit-llvm -o %t %s
+
+typedef struct {
+  unsigned f0;
+} s0;
+
+@interface A
+- (s0) f0;
+@end
+
+@implementation A
+-(s0) f0{}
+- (unsigned) bar {
+  return self.f0.f0;
+}
+@end
+