Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/include/llvm/IR/StructuralHash.h b/linux-x64/clang/include/llvm/IR/StructuralHash.h
new file mode 100644
index 0000000..eb63a21
--- /dev/null
+++ b/linux-x64/clang/include/llvm/IR/StructuralHash.h
@@ -0,0 +1,34 @@
+//===- llvm/IR/StructuralHash.h - IR Hash for expensive checks --*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides hashing of the LLVM IR structure to be used to check
+// Passes modification status.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_IR_STRUCTURALHASH_H
+#define LLVM_IR_STRUCTURALHASH_H
+
+#ifdef EXPENSIVE_CHECKS
+
+#include <cstdint>
+
+// This header is only meant to be used when -DEXPENSIVE_CHECKS is set
+namespace llvm {
+
+class Function;
+class Module;
+
+uint64_t StructuralHash(const Function &F);
+uint64_t StructuralHash(const Module &M);
+
+} // end namespace llvm
+
+#endif
+
+#endif // LLVM_IR_STRUCTURALHASH_H