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/lldb/Expression/Materializer.h b/linux-x64/clang/include/lldb/Expression/Materializer.h
index 603b4e0..754e67c 100644
--- a/linux-x64/clang/include/lldb/Expression/Materializer.h
+++ b/linux-x64/clang/include/lldb/Expression/Materializer.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef liblldb_Materializer_h
-#define liblldb_Materializer_h
+#ifndef LLDB_EXPRESSION_MATERIALIZER_H
+#define LLDB_EXPRESSION_MATERIALIZER_H
 
 #include <memory>
 #include <vector>
@@ -22,14 +22,12 @@
 
 class Materializer {
 public:
-  Materializer();
+  Materializer() = default;
   ~Materializer();
 
   class Dematerializer {
   public:
-    Dematerializer()
-        : m_materializer(nullptr), m_map(nullptr),
-          m_process_address(LLDB_INVALID_ADDRESS) {}
+    Dematerializer() = default;
 
     ~Dematerializer() { Wipe(); }
 
@@ -56,11 +54,11 @@
       }
     }
 
-    Materializer *m_materializer;
+    Materializer *m_materializer = nullptr;
     lldb::ThreadWP m_thread_wp;
     StackID m_stack_id;
-    IRMemoryMap *m_map;
-    lldb::addr_t m_process_address;
+    IRMemoryMap *m_map = nullptr;
+    lldb::addr_t m_process_address = LLDB_INVALID_ADDRESS;
   };
 
   typedef std::shared_ptr<Dematerializer> DematerializerSP;
@@ -115,8 +113,6 @@
     void SetOffset(uint32_t offset) { m_offset = offset; }
 
   protected:
-    void SetSizeAndAlignmentFromType(CompilerType &type);
-
     uint32_t m_alignment;
     uint32_t m_size;
     uint32_t m_offset;
@@ -130,10 +126,10 @@
 
   DematerializerWP m_dematerializer_wp;
   EntityVector m_entities;
-  uint32_t m_current_offset;
-  uint32_t m_struct_alignment;
+  uint32_t m_current_offset = 0;
+  uint32_t m_struct_alignment = 8;
 };
 
 } // namespace lldb_private
 
-#endif // liblldb_Materializer_h
+#endif // LLDB_EXPRESSION_MATERIALIZER_H