[clang] [llvm] [RISCV] Support spacemit vsmtvdotii extensions (PR #202533)

[Pengcheng Wang via cfe-commits]

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@@ -1856,6 +1856,14 @@ def HasVendorXSMTVDot
       AssemblerPredicate<(all_of FeatureVendorXSMTVDot),
                          "'XSMTVDot' (SpacemiT Vector Dot Product Extension)">;
 
+def FeatureVendorXSMTVDotII
+    : RISCVExtension<1, 0, "SpacemiT Vector Extension for Matrix(2.0)",
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wangpc-pp wrote:

Ditto

https://github.com/llvm/llvm-project/pull/202533