GraphWriter: try gv before xdg-open

Avoid changing behaviour for everyone who's used to the traditional ghostview
UI, especially since it knows how to stay in the foreground unlike xdg-open.

Amendment to r210147.

llvm-svn: 210148

diff --git a/llvm/lib/Support/GraphWriter.cpp b/llvm/lib/Support/GraphWriter.cpp
index a7bb4f2..306f3e8 100644 (file)
--- a/llvm/lib/Support/GraphWriter.cpp
+++ b/llvm/lib/Support/GraphWriter.cpp
@@ -170,10 +170,10 @@ bool llvm::DisplayGraph(StringRef FilenameRef, bool wait,
   if (!PSViewer && S.TryFindProgram("open", ViewerPath))
     PSViewer = PSV_OSXOpen;
 #endif
-  if (!PSViewer && S.TryFindProgram("xdg-open", ViewerPath))
-    PSViewer = PSV_XDGOpen;
   if (!PSViewer && S.TryFindProgram("gv", ViewerPath))
     PSViewer = PSV_Ghostview;
+  if (!PSViewer && S.TryFindProgram("xdg-open", ViewerPath))
+    PSViewer = PSV_XDGOpen;
 
   // PostScript graph generator + PostScript viewer
   std::string GeneratorPath;