Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/MC/MCAsmInfoELF.h b/linux-x64/clang/include/llvm/MC/MCAsmInfoELF.h
new file mode 100644
index 0000000..f113afc
--- /dev/null
+++ b/linux-x64/clang/include/llvm/MC/MCAsmInfoELF.h
@@ -0,0 +1,31 @@
+//===- llvm/MC/MCAsmInfoELF.h - ELF Asm info --------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCASMINFOELF_H
+#define LLVM_MC_MCASMINFOELF_H
+
+#include "llvm/MC/MCAsmInfo.h"
+
+namespace llvm {
+
+class MCAsmInfoELF : public MCAsmInfo {
+ virtual void anchor();
+ MCSection *getNonexecutableStackSection(MCContext &Ctx) const final;
+
+protected:
+ /// Targets which have non-executable stacks by default can set this to false
+ /// to disable the special section which requests a non-executable stack.
+ bool UsesNonexecutableStackSection = true;
+
+ MCAsmInfoELF();
+};
+
+} // end namespace llvm
+
+#endif // LLVM_MC_MCASMINFOELF_H