[llvm] Add the 'initialized' attribute langref and support (PR #84803)

[Jan Voung via llvm-commits]

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@@ -307,6 +308,10 @@ namespace llvm {
                                 bool AllowParens = false);
     bool parseOptionalCodeModel(CodeModel::Model &model);
     bool parseOptionalDerefAttrBytes(lltok::Kind AttrKind, uint64_t &Bytes);
+    bool parseConstRange(std::pair<int64_t, int64_t> &Range);
+    bool parseInitializedRanges(
+        lltok::Kind AttrKind,
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jvoung wrote:

can the AttrKind be hardcoded within the function instead of taking as parameter? (unlike DerefAttrBytes, there is only one variation of the attribute, I believe?)

https://github.com/llvm/llvm-project/pull/84803