[llvm] [SDPatternMatch] Add m_CondCode, m_NoneOf, and some SExt improvements (PR #90762)

[Min-Yih Hsu via llvm-commits]

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@@ -366,6 +379,10 @@ template <typename... Preds> Or<Preds...> m_AnyOf(Preds &&...preds) {
   return Or<Preds...>(std::forward<Preds>(preds)...);
 }
 
+template <typename... Preds> auto m_NoneOf(Preds &&...preds) {
+  return Not{m_AnyOf(std::forward<Preds>(preds)...)};
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mshockwave wrote:

Done. I created a `m_IsNot` to wrap the `Not` struct instantiation.

https://github.com/llvm/llvm-project/pull/90762