[llvm] [MVT] Expand the MVT enum to allow more types (PR #69603)

[Nemanja Ivanovic via llvm-commits]

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@@ -33,7 +33,7 @@ namespace llvm {
   /// type can be represented by an MVT.
   class MVT {
   public:
-    enum SimpleValueType : uint8_t {
+    enum SimpleValueType : uint16_t {
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nemanjai wrote:

I have not done any measurements. Do you have a suggestion as to what experiment you'd like me to do?

https://github.com/llvm/llvm-project/pull/69603