Change the driver's logic about Objective-C runtimes: abstract out a

structure to hold inferred information, then propagate each invididual
bit down to -cc1.  Separate the bits of "supports weak" and "has a native
ARC runtime";  make the latter a CodeGenOption.

The tool chain is still driving this decision, because it's the place that
has the required deployment target information on Darwin, but at least it's
better-factored now.

llvm-svn: 134453

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/ARCMigrate/ARCMT.cpp b/clang/lib/ARCMigrate/ARCMT.cpp
index 7f3479604e2..0678a255d71 100644
--- a/clang/lib/ARCMigrate/ARCMT.cpp
+++ b/clang/lib/ARCMigrate/ARCMT.cpp
@@ -189,7 +189,7 @@ CompilerInvocation *createInvocationForMigration(CompilerInvocation &origCI) {
   CInvok->getDiagnosticOpts().ErrorLimit = 0;
   CInvok->getDiagnosticOpts().Warnings.push_back(
                                             "error=arc-unsafe-retained-assign");
-  CInvok->getLangOpts().ObjCNoAutoRefCountRuntime = !HasARCRuntime(origCI);
+  CInvok->getLangOpts().ObjCRuntimeHasWeak = HasARCRuntime(origCI);
 
   return CInvok.take();
 }