[clang] [Clang] Improve EmitClangAttrSpellingListIndex (PR #114899)

[Matt Arsenault via cfe-commits]

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@@ -153,12 +155,33 @@ std::string AttributeCommonInfo::getNormalizedFullName() const {
       normalizeName(getAttrName(), getScopeName(), getSyntax()));
 }
 
+const llvm::StringMap<AttributeCommonInfo::Scope> ScopeMap = {
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arsenm wrote:

Avoid static constructor? Just make this a sorted list and use lower_bound or one of the other search functions? 

https://github.com/llvm/llvm-project/pull/114899