[llvm] [RISCV] Handle recurrences in RISCVVLOptimizer (PR #151285)

[Luke Lau via llvm-commits]

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@@ -847,10 +878,15 @@ static std::optional<OperandInfo> getOperandInfo(const MachineOperand &MO) {
   return OperandInfo(getEMULEqualsEEWDivSEWTimesLMUL(*Log2EEW, MI), *Log2EEW);
 }
 
+static bool isTupleInsertInstr(const MachineInstr &MI);
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lukel97 wrote:

Forward declared here to remove code motion from the diff, will remove in a follow-up commit

https://github.com/llvm/llvm-project/pull/151285