[PATCH 01/12] perf clang: Fix build with Clang 9

[Arnaldo Carvalho de Melo]

From: "Maciej S. Szmigiero" <mail@xxxxxxxxxxxxxxxxxxxxx>

LLVM D59377 (included in Clang 9) refactored Clang VFS construction a
bit, which broke perf clang build.  Let's fix it.

Signed-off-by: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Dennis Schridde <devurandom@xxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: clang-built-linux@xxxxxxxxxxxxxxxx
Cc: Denis Pronin <dannftk@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Naohiro Aota <naota@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20191228171314.946469-2-mail@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/c++/clang.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/util/c++/clang.cpp b/tools/perf/util/c++/clang.cpp
index fc361c3f8570..c8885dfa3667 100644
--- a/tools/perf/util/c++/clang.cpp
+++ b/tools/perf/util/c++/clang.cpp
@@ -71,7 +71,11 @@ getModuleFromSource(llvm::opt::ArgStringList CFlags,
 	CompilerInstance Clang;
 	Clang.createDiagnostics();
 
+#if CLANG_VERSION_MAJOR < 9
 	Clang.setVirtualFileSystem(&*VFS);
+#else
+	Clang.createFileManager(&*VFS);
+#endif
 
 #if CLANG_VERSION_MAJOR < 4
 	IntrusiveRefCntPtr<CompilerInvocation> CI =
-- 
2.21.1