diff --git a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
index fa32295..0010cf6 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriter.h
@@ -105,7 +105,7 @@
         const std::map<std::string, GVSummaryMapTy> *ModuleToSummariesForIndex);
   };
 
-  /// \brief Write the specified module to the specified raw output stream.
+  /// Write the specified module to the specified raw output stream.
   ///
   /// For streams where it matters, the given stream should be in "binary"
   /// mode.
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriterPass.h b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriterPass.h
index 9ac6fba..05044c9 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitcodeWriterPass.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitcodeWriterPass.h
@@ -21,9 +21,10 @@
 namespace llvm {
 class Module;
 class ModulePass;
+class Pass;
 class raw_ostream;
 
-/// \brief Create and return a pass that writes the module to the specified
+/// Create and return a pass that writes the module to the specified
 /// ostream. Note that this pass is designed for use with the legacy pass
 /// manager.
 ///
@@ -40,7 +41,10 @@
                                     bool EmitSummaryIndex = false,
                                     bool EmitModuleHash = false);
 
-/// \brief Pass for writing a module of IR out to a bitcode file.
+/// Check whether a pass is a BitcodeWriterPass.
+bool isBitcodeWriterPass(Pass *P);
+
+/// Pass for writing a module of IR out to a bitcode file.
 ///
 /// Note that this is intended for use with the new pass manager. To construct
 /// a pass for the legacy pass manager, use the function above.
@@ -51,7 +55,7 @@
   bool EmitModuleHash;
 
 public:
-  /// \brief Construct a bitcode writer pass around a particular output stream.
+  /// Construct a bitcode writer pass around a particular output stream.
   ///
   /// If \c ShouldPreserveUseListOrder, encode use-list order so it can be
   /// reproduced when deserialized.
@@ -65,7 +69,7 @@
       : OS(OS), ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
   EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {}
 
-  /// \brief Run the bitcode writer pass, and output the module to the selected
+  /// Run the bitcode writer pass, and output the module to the selected
   /// output stream.
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
 };
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitstreamReader.h b/linux-x64/clang/include/llvm/Bitcode/BitstreamReader.h
index b484fa2..72e7619 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitstreamReader.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitstreamReader.h
@@ -429,7 +429,7 @@
     // don't care what code widths are used inside of it.
     ReadVBR(bitc::CodeLenWidth);
     SkipToFourByteBoundary();
-    unsigned NumFourBytes = Read(bitc::BlockSizeWidth);
+    size_t NumFourBytes = Read(bitc::BlockSizeWidth);
 
     // Check that the block wasn't partially defined, and that the offset isn't
     // bogus.
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h b/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
index e276db5..c854769 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitstreamWriter.h
@@ -90,10 +90,10 @@
     assert(BlockScope.empty() && CurAbbrevs.empty() && "Block imbalance");
   }
 
-  /// \brief Retrieve the current position in the stream, in bits.
+  /// Retrieve the current position in the stream, in bits.
   uint64_t GetCurrentBitNo() const { return GetBufferOffset() * 8 + CurBit; }
 
-  /// \brief Retrieve the number of bits currently used to encode an abbrev ID.
+  /// Retrieve the number of bits currently used to encode an abbrev ID.
   unsigned GetAbbrevIDWidth() const { return CurCodeSize; }
 
   //===--------------------------------------------------------------------===//
diff --git a/linux-x64/clang/include/llvm/Bitcode/LLVMBitCodes.h b/linux-x64/clang/include/llvm/Bitcode/LLVMBitCodes.h
index f3500e1..6723cf4 100644
--- a/linux-x64/clang/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/linux-x64/clang/include/llvm/Bitcode/LLVMBitCodes.h
@@ -310,6 +310,7 @@
   METADATA_GLOBAL_VAR_EXPR = 37,        // [distinct, var, expr]
   METADATA_INDEX_OFFSET = 38,           // [offset]
   METADATA_INDEX = 39,                  // [bitpos]
+  METADATA_LABEL = 40,                  // [distinct, scope, name, file, line]
 };
 
 // The constants block (CONSTANTS_BLOCK_ID) describes emission for each
@@ -589,6 +590,7 @@
   ATTR_KIND_SANITIZE_HWADDRESS = 55,
   ATTR_KIND_NOCF_CHECK = 56,
   ATTR_KIND_OPT_FOR_FUZZING = 57,
+  ATTR_KIND_SHADOWCALLSTACK = 58,
 };
 
 enum ComdatSelectionKindCodes {