[llvm] [AArch64]: Refactor target parser to use BitVector. (PR #65423)

[Craig Topper via llvm-commits]

================
@@ -69,6 +70,24 @@ std::string FormatExtensionFlags(uint64_t Flags) {
   return llvm::join(Features, ", ");
 }
 
+std::string SerializeExtensionFlags(Bitset<AArch64::AEK_EXTENTIONS_MAX> Flags) {
+  std::string SerializedFlags;
+  int HexaValue = 0;
----------------
topperc wrote:

Hexa -> Hex.

https://github.com/llvm/llvm-project/pull/65423