Merge commit 'b40feb9c5446' from llvm.org/main into next

Author: git apple-llvm automerger

llvm/include/llvm/Transforms/Instrumentation/GCOVProfiler.h

@@ -14,6 +14,7 @@
 
 #include "llvm/IR/PassManager.h"
 #include "llvm/Support/Compiler.h"
+#include "llvm/Support/VirtualFileSystem.h"
 #include "llvm/Transforms/Utils/Instrumentation.h"
 
 namespace llvm {