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

[Jan Voung via llvm-commits]

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@@ -222,6 +237,20 @@ class ConstantRangeAttributeImpl : public EnumAttributeImpl {
   ConstantRange getConstantRangeValue() const { return CR; }
 };
 
+class ConstRangeListAttributeImpl : public EnumAttributeImpl {
+  SmallVector<std::pair<int64_t, int64_t>, 16> Ranges;
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jvoung wrote:

Perhaps something smaller than 16? What is the typical number of ranges?

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