Update comment after r152140. Clarify a bit too.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152441 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 69b084b7efa5cd6310712d402a7821ee15c7c79e..630b5d937020f613819a2f50d91e668500aba8b7 100644 (file)
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2250,7 +2250,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     }
   }
 
-  // -fobjc-default-synthesize-properties=0 is default.
+  // -fobjc-default-synthesize-properties=1 is default. This only has an effect
+  // if the nonfragile objc abi is used.
   if (Args.hasFlag(options::OPT_fobjc_default_synthesize_properties,
                    options::OPT_fno_objc_default_synthesize_properties,
                    getToolChain().IsObjCDefaultSynthPropertiesDefault())) {