[clang] [llvm] [RISCV] Add MIPS extensions (PR #121394)

[Djordje Todorovic via llvm-commits]

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@@ -62,6 +62,15 @@ static cl::opt<unsigned> RISCVMinimumJumpTableEntries(
     "riscv-min-jump-table-entries", cl::Hidden,
     cl::desc("Set minimum number of entries to use a jump table on RISCV"));
 
+static cl::opt<bool>
+    UseLoadStorePairsOpt("riscv-load-store-pairs",
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djtodoro wrote:

Well, we have not seen benefits on some important applications/benchmarks for us when using this extension with `p8700` CPU, so that is why we keep it `OFF` by default for now.

https://github.com/llvm/llvm-project/pull/121394