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

[Craig Topper via cfe-commits]

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@@ -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;
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topperc wrote:

Hexa -> Hex.

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