Update llvm to r84119.

1 files changed, 5 insertions, 0 deletions

diff --git a/include/llvm/System/Process.h b/include/llvm/System/Process.h
index 11dbf75..010499a 100644
--- a/include/llvm/System/Process.h
+++ b/include/llvm/System/Process.h
@@ -94,6 +94,11 @@ namespace sys {
       /// the user rather than being put on a pipe or stored in a file.
       static bool StandardErrIsDisplayed();
 
+      /// This function determines if the given file descriptor is connected to
+      /// a "tty" or "console" window. That is, the output would be displayed to
+      /// the user rather than being put on a pipe or stored in a file.
+      static bool FileDescriptorIsDisplayed(int fd);
+
       /// This function determines the number of columns in the window
       /// if standard output is connected to a "tty" or "console"
       /// window. If standard output is not connected to a tty or