[llvm] [NFC][TableGen] Elminate use of isalpha/isdigit from TGLexer (PR #104837)

[Rahul Joshi via llvm-commits]

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@@ -51,14 +67,14 @@ static const char *lexMacroName(StringRef Str) {
 
   // Macro names start with [a-zA-Z_].
   const char *Next = Str.begin();
-  if (*Next != '_' && !isalpha(*Next))
+  if (!IsValidIDChar(*Next, First))
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jurahul wrote:

Done.

https://github.com/llvm/llvm-project/pull/104837