[clang] [llvm] [RISCV] Add Svrsw60t59b extension (PR #132321)

[Craig Topper via llvm-commits]

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@@ -1098,6 +1098,7 @@ R"(All available -march extensions for RISC-V
     svnapot              1.0
     svpbmt               1.0
     svvptc               1.0
+    svrsw60t59b          1.0
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topperc wrote:

Shouldn't this be above svvptc alphabetically? Did you test this locally?

https://github.com/llvm/llvm-project/pull/132321