[llvm] [Exegesis][RISCV] Add RISCV support for llvm-exegesis (PR #89047)

[Aiden Grossman via llvm-commits]

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@@ -113,7 +109,51 @@ static void appendCodeTemplates(const LLVMState &State,
   }
   case ExecutionMode::SERIAL_VIA_MEMORY_INSTR: {
     // Select back-to-back memory instruction.
-    // TODO: Implement me.
+
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boomanaiden154 wrote:

You can land it separately and then pull it into this PR once you rebase on top of a more recent `main`.

https://github.com/llvm/llvm-project/pull/89047