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/Analysis/DemandedBits.h b/linux-x64/clang/include/llvm/Analysis/DemandedBits.h
index 04db3eb..7a8618a 100644
--- a/linux-x64/clang/include/llvm/Analysis/DemandedBits.h
+++ b/linux-x64/clang/include/llvm/Analysis/DemandedBits.h
@@ -61,6 +61,20 @@
 
   void print(raw_ostream &OS);
 
+  /// Compute alive bits of one addition operand from alive output and known
+  /// operand bits
+  static APInt determineLiveOperandBitsAdd(unsigned OperandNo,
+                                           const APInt &AOut,
+                                           const KnownBits &LHS,
+                                           const KnownBits &RHS);
+
+  /// Compute alive bits of one subtraction operand from alive output and known
+  /// operand bits
+  static APInt determineLiveOperandBitsSub(unsigned OperandNo,
+                                           const APInt &AOut,
+                                           const KnownBits &LHS,
+                                           const KnownBits &RHS);
+
 private:
   void performAnalysis();
   void determineLiveOperandBits(const Instruction *UserI,