[llvm] [llvm][RISCV] Implement Zilsd load/store pair optimization (PR #158640)

[Craig Topper via llvm-commits]

================
@@ -1827,6 +1831,7 @@ def TunePreferVsetvliOverReadVLENB
                        "true",
                        "Prefer vsetvli over read vlenb CSR to calculate VLEN">;
 
+
----------------
topperc wrote:

Stray formatting change

https://github.com/llvm/llvm-project/pull/158640