================
@@ -13,6 +13,54 @@ using namespace llvm;
#define DEBUG_TYPE "riscv-prera-sched-strategy"
+RISCV::VSETVLIInfo
+RISCVPreRAMachineSchedStrategy::getVSETVLIInfo(const MachineInstr *MI) const {
+ unsigned TSFlags = MI->getDesc().TSFlags;
+ if (!RISCVII::hasSEWOp(TSFlags))
+ return RISCV::VSETVLIInfo();
+ return VIA.computeInfoForInstr(*MI);
+}
+
+bool RISCVPreRAMachineSchedStrategy::tryVSETVLIInfo(RISCV::VSETVLIInfo TryInfo,
+ RISCV::VSETVLIInfo
CandInfo,
+ SchedCandidate &TryCand,
+ SchedCandidate &Cand,
+ CandReason Reason) const {
+ // Do not compare the vsetvli info changes between top and bottom
+ // boundary.
+ if (Cand.AtTop != TryCand.AtTop)
+ return false;
+
+ auto IsCompatible = [&](RISCV::VSETVLIInfo FirstInfo,
----------------
mshockwave wrote:
`const RISCV::VSETVLIInfo &`? unlike `tryVSETVLIInfo` 's arguments I don't
think there is any move-elimination we can do here
https://github.com/llvm/llvm-project/pull/95924
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