[clang] [CLANG]Add Scalable vectors for mfloat8_t (PR #101644)

[Paul Walker via cfe-commits]

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@@ -454,6 +458,8 @@ std::string SVEType::builtin_str() const {
   else if (isBFloat()) {
     assert(ElementBitwidth == 16 && "Not a valid BFloat.");
     S += "y";
+  } else if (isMFloat()) {
+    S += "m";
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paulwalker-arm wrote:

Perhaps worth adding `assert(ElementBitwidth == 8 && "Not a valid MFloat.")`?

https://github.com/llvm/llvm-project/pull/101644