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/Support/ELFAttributeParser.h b/linux-x64/clang/include/llvm/Support/ELFAttributeParser.h
new file mode 100644
index 0000000..8bf87b2
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Support/ELFAttributeParser.h
@@ -0,0 +1,72 @@
+//===- ELF AttributeParser.h - ELF Attribute Parser -------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_ELFATTRIBUTEPARSER_H
+#define LLVM_SUPPORT_ELFATTRIBUTEPARSER_H
+
+#include "ELFAttributes.h"
+#include "ScopedPrinter.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/DataExtractor.h"
+#include "llvm/Support/Error.h"
+
+#include <unordered_map>
+
+namespace llvm {
+class StringRef;
+
+class ELFAttributeParser {
+  StringRef vendor;
+  std::unordered_map<unsigned, unsigned> attributes;
+  std::unordered_map<unsigned, StringRef> attributesStr;
+
+  virtual Error handler(uint64_t tag, bool &handled) = 0;
+
+protected:
+  ScopedPrinter *sw;
+  TagNameMap tagToStringMap;
+  DataExtractor de{ArrayRef<uint8_t>{}, true, 0};
+  DataExtractor::Cursor cursor{0};
+
+  void printAttribute(unsigned tag, unsigned value, StringRef valueDesc);
+
+  Error parseStringAttribute(const char *name, unsigned tag,
+                             ArrayRef<const char *> strings);
+  Error parseAttributeList(uint32_t length);
+  void parseIndexList(SmallVectorImpl<uint8_t> &indexList);
+  Error parseSubsection(uint32_t length);
+
+public:
+  virtual ~ELFAttributeParser() { static_cast<void>(!cursor.takeError()); }
+  Error integerAttribute(unsigned tag);
+  Error stringAttribute(unsigned tag);
+
+  ELFAttributeParser(ScopedPrinter *sw, TagNameMap tagNameMap, StringRef vendor)
+      : vendor(vendor), sw(sw), tagToStringMap(tagNameMap) {}
+
+  ELFAttributeParser(TagNameMap tagNameMap, StringRef vendor)
+      : vendor(vendor), sw(nullptr), tagToStringMap(tagNameMap) {}
+
+  Error parse(ArrayRef<uint8_t> section, support::endianness endian);
+
+  Optional<unsigned> getAttributeValue(unsigned tag) const {
+    auto I = attributes.find(tag);
+    if (I == attributes.end())
+      return None;
+    return I->second;
+  }
+  Optional<StringRef> getAttributeString(unsigned tag) const {
+    auto I = attributesStr.find(tag);
+    if (I == attributesStr.end())
+      return None;
+    return I->second;
+  }
+};
+
+} // namespace llvm
+#endif