Update prebuilt Clang to match Android kernel.

Bug: 132428451
Change-Id: I8f6e2cb23f381fc0c02ddea99b867e58e925e5be
diff --git a/linux-x64/clang/include/llvm/IR/Constants.h b/linux-x64/clang/include/llvm/IR/Constants.h
index f9d5ebc..ca56e8b 100644
--- a/linux-x64/clang/include/llvm/IR/Constants.h
+++ b/linux-x64/clang/include/llvm/IR/Constants.h
@@ -1,9 +1,8 @@
 //===-- llvm/Constants.h - Constant class subclass definitions --*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -290,7 +289,11 @@
 
   static Constant *get(Type* Ty, StringRef Str);
   static ConstantFP *get(LLVMContext &Context, const APFloat &V);
-  static Constant *getNaN(Type *Ty, bool Negative = false, unsigned type = 0);
+  static Constant *getNaN(Type *Ty, bool Negative = false, uint64_t Payload = 0);
+  static Constant *getQNaN(Type *Ty, bool Negative = false,
+                           APInt *Payload = nullptr);
+  static Constant *getSNaN(Type *Ty, bool Negative = false,
+                           APInt *Payload = nullptr);
   static Constant *getNegativeZero(Type *Ty);
   static Constant *getInfinity(Type *Ty, bool Negative = false);
 
@@ -1114,6 +1117,13 @@
   static Constant *getSelect(Constant *C, Constant *V1, Constant *V2,
                              Type *OnlyIfReducedTy = nullptr);
 
+  /// get - Return a unary operator constant expression,
+  /// folding if possible.
+  ///
+  /// \param OnlyIfReducedTy see \a getWithOperands() docs.
+  static Constant *get(unsigned Opcode, Constant *C1, unsigned Flags = 0, 
+                       Type *OnlyIfReducedTy = nullptr);
+
   /// get - Return a binary or shift operator constant expression,
   /// folding if possible.
   ///