Treat the weak export of block runtime symbols as a deployment-target
feature akin to the ARC runtime checks. Removes a terrible hack where
IR gen needed to find the declarations of those symbols in the translation
unit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139404 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index cfb8869..10c416a 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -187,6 +187,7 @@
virtual bool HasNativeLLVMSupport() const;
virtual void configureObjCRuntime(ObjCRuntime &runtime) const;
+ virtual bool hasBlocksRuntime() const;
virtual DerivedArgList *TranslateArgs(const DerivedArgList &Args,
const char *BoundArch) const;