linux-kernel - [PATCH] perf clang: Fix build with Clang 9

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Date:   Sat, 28 Dec 2019 18:13:14 +0100
From:   "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Dennis Schridde <devurandom@....net>,
        Denis Pronin <dannftk@...dex.ru>,
        Naohiro Aota <naota@...sp.net>,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: [PATCH] perf clang: Fix build with Clang 9

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@...iej.szmigiero.name>
Reviewed-by: Dennis Schridde <devurandom@....net>
---
 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 =