[arcmt] Add weak/unsafe_unretained for "@property (readonly)" when we are @synthesizing it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135067 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ARCMigrate/TransProperties.cpp

@@ -307,7 +307,7 @@ private:
 
   bool hasNoBackingIvars(PropsTy &props) const {
     for (PropsTy::iterator I = props.begin(), E = props.end(); I != E; ++I)
-      if (isUserDeclared(I->IvarD))
+      if (I->IvarD)
         return false;
 
     return true;

test/ARCMT/assign-prop-with-arc-runtime.m

@@ -30,10 +30,11 @@ typedef _NSCachedAttributedString *BadClassForWeak;
 @property () NSObject *not_safe2;
 @property Forw *not_safe3;
 
-@property (assign) Foo *no_back_ivar;
+@property (assign) Foo *no_user_ivar1;
+@property (readonly) Foo *no_user_ivar2;
 @end
 
 @implementation Foo
 @synthesize x,w,q1,q2,oo,bcw,not_safe1,not_safe2,not_safe3;
-@synthesize no_back_ivar;
+@synthesize no_user_ivar1, no_user_ivar2;
 @end

test/ARCMT/assign-prop-with-arc-runtime.m.result

@@ -30,10 +30,11 @@ typedef _NSCachedAttributedString *BadClassForWeak;
 @property (unsafe_unretained) NSObject *not_safe2;
 @property (unsafe_unretained) Forw *not_safe3;
 
-@property (weak) Foo *no_back_ivar;
+@property (weak) Foo *no_user_ivar1;
+@property (weak, readonly) Foo *no_user_ivar2;
 @end
 
 @implementation Foo
 @synthesize x,w,q1,q2,oo,bcw,not_safe1,not_safe2,not_safe3;
-@synthesize no_back_ivar;
+@synthesize no_user_ivar1, no_user_ivar2;
 @end