[clang] [llvm] [RISCV] Add Smrnmi extension (PR #111668)

[Pengcheng Wang via cfe-commits]

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@@ -276,6 +276,14 @@ foreach i = 0...15 in {
 foreach i = 0...63 in
   def : SysReg<"pmpaddr"#i, !add(0x3B0, i)>;
 
+//===----------------------------------------------------------------------===//
+// Machine Non-Maskable Interrupt Handling
+//===----------------------------------------------------------------------===//
+def:SysReg<"mnscratch",0x740>;
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wangpc-pp wrote:

Yes! I forgot it.

https://github.com/llvm/llvm-project/pull/111668