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/MC/MCSymbol.h b/linux-x64/clang/include/llvm/MC/MCSymbol.h
index 189484d..a83781f 100644
--- a/linux-x64/clang/include/llvm/MC/MCSymbol.h
+++ b/linux-x64/clang/include/llvm/MC/MCSymbol.h
@@ -16,6 +16,7 @@
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCFragment.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
@@ -27,7 +28,6 @@
 
 class MCAsmInfo;
 class MCContext;
-class MCExpr;
 class MCSection;
 class raw_ostream;
 
@@ -94,7 +94,8 @@
 
   mutable unsigned IsRegistered : 1;
 
-  /// This symbol is visible outside this translation unit.
+  /// True if this symbol is visible outside this translation unit. Note: ELF
+  /// uses binding instead of this bit.
   mutable unsigned IsExternal : 1;
 
   /// This symbol is private extern.
@@ -178,14 +179,6 @@
     llvm_unreachable("Constructor throws?");
   }
 
-  MCSection *getSectionPtr() const {
-    if (MCFragment *F = getFragment()) {
-      assert(F != AbsolutePseudoFragment);
-      return F->getParent();
-    }
-    return nullptr;
-  }
-
   /// Get a reference to the name field.  Requires that we have a name
   const StringMapEntry<bool> *&getNameEntryPtr() {
     assert(FragmentAndHasName.getInt() && "Name is required");
@@ -267,7 +260,7 @@
   /// Get the section associated with a defined, non-absolute symbol.
   MCSection &getSection() const {
     assert(isInSection() && "Invalid accessor!");
-    return *getSectionPtr();
+    return *getFragment()->getParent();
   }
 
   /// Mark the symbol as defined in the fragment \p F.