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/GlobPattern.h b/linux-x64/clang/include/llvm/Support/GlobPattern.h
index 66a4cd9..b79de6f 100644
--- a/linux-x64/clang/include/llvm/Support/GlobPattern.h
+++ b/linux-x64/clang/include/llvm/Support/GlobPattern.h
@@ -16,21 +16,31 @@
 
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/Optional.h"
-#include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Error.h"
 #include <vector>
 
 // This class represents a glob pattern. Supported metacharacters
-// are "*", "?", "[<chars>]" and "[^<chars>]".
+// are "*", "?", "\", "[<chars>]", "[^<chars>]", and "[!<chars>]".
 namespace llvm {
-class BitVector;
+
 template <typename T> class ArrayRef;
+class StringRef;
 
 class GlobPattern {
 public:
   static Expected<GlobPattern> create(StringRef Pat);
   bool match(StringRef S) const;
 
+  // Returns true for glob pattern "*". Can be used to avoid expensive
+  // preparation/acquisition of the input for match().
+  bool isTrivialMatchAll() const {
+    if (Prefix && Prefix->empty()) {
+      assert(!Suffix);
+      return true;
+    }
+    return false;
+  }
+
 private:
   bool matchOne(ArrayRef<BitVector> Pat, StringRef S) const;